clang static analysis reports this problem:
sdio.c:2403:3: warning: Attempt to free released memory
kfree(card->mpa_rx.buf);
^~~~~~~~~~~~~~~~~~~~~~~
When mwifiex_init_sdio() fails in its first call to
mwifiex_alloc_sdio_mpa_buffer, it falls back to calling it
again. If the second alloc of mpa_tx.buf fails, the error
handler will try to free the old, previously freed mpa_rx.buf.
Reviewing the code, it looks like a second double free would
happen with mwifiex_cleanup_sdio().
So set both pointers to NULL when they are freed.
Fixes: 5e6e3a92b9 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201004131931.29782-1-trix@redhat.com
The usage of in_interrupt() in non-core code is phased out. Ideally the
information of the calling context should be passed by the callers or the
functions be split as appropriate.
libertas uses in_interupt() to select the netif_rx*() variant which matches
the calling context. The attempt to consolidate the code by passing an
arguemnt or by distangling it failed due lack of knowledge about this
driver and because the call chains are hard to follow.
As a stop gap use netif_rx_any_context() which invokes the correct code
path depending on context and confines the in_interrupt() usage to core
code.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The debug macro prints (INT) when in_interrupt() returns true. The value of
this information is dubious as it does not distinguish between the various
contexts which are covered by in_interrupt().
As the usage of in_interrupt() in drivers is phased out and the same
information can be more precisely obtained with tracing, remove the
in_interrupt() conditional from this debug printk.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The usage of in_interrupt() in non-core code is phased out. Ideally the
information of the calling context should be passed by the callers or the
functions be split as appropriate.
mwifiex uses in_interupt() to select the netif_rx*() variant which matches
the calling context. The attempt to consolidate the code by passing an
arguemnt or by distangling it failed due lack of knowledge about this
driver and because the call chains are hard to follow.
As a stop gap use netif_rx_any_context() which invokes the correct code
path depending on context and confines the in_interrupt() usage to core
code.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Two minor conflicts:
1) net/ipv4/route.c, adding a new local variable while
moving another local variable and removing it's
initial assignment.
2) drivers/net/dsa/microchip/ksz9477.c, overlapping changes.
One pretty prints the port mode differently, whilst another
changes the driver to try and obtain the port mode from
the port node rather than the switch node.
Signed-off-by: David S. Miller <davem@davemloft.net>
clang static analyzer reports this problem
init.c:739:8: warning: Called function pointer
is null (null dereference)
ret = adapter->if_ops.check_fw_status( ...
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In mwifiex_dnld_fw, there is an earlier check for check_fw_status(),
The check was introduced for usb support at the same time this
check in _mwifiex_fw_dpc() was made
if (adapter->if_ops.dnld_fw) {
ret = adapter->if_ops.dnld_fw(adapter, &fw);
} else {
ret = mwifiex_dnld_fw(adapter, &fw);
}
And a dnld_fw function initialized as part the usb's
mwifiex_if_ops.
The other instances of mwifiex_if_ops for pci and sdio
both set check_fw_status.
So the first check is not needed and can be removed.
Fixes: 4daffe3543 ("mwifiex: add support for Marvell USB8797 chipset")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200906200548.18053-1-trix@redhat.com
These variables only used in sdio.c, move them to .c file
can silence these warnings:
In file included from drivers/net/wireless/marvell/mwifiex//main.h:59:0,
from drivers/net/wireless/marvell/mwifiex//cfp.c:24:
drivers/net/wireless/marvell/mwifiex//sdio.h:705:41: warning: ‘mwifiex_sdio_sd8801’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8801 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:689:41: warning: ‘mwifiex_sdio_sd8987’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8987 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:674:41: warning: ‘mwifiex_sdio_sd8887’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8887 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:658:41: warning: ‘mwifiex_sdio_sd8997’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8997 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:642:41: warning: ‘mwifiex_sdio_sd8977’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8977 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:627:41: warning: ‘mwifiex_sdio_sd8897’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:612:41: warning: ‘mwifiex_sdio_sd8797’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8797 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:597:41: warning: ‘mwifiex_sdio_sd8787’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8787 = {
^~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//sdio.h:582:41: warning: ‘mwifiex_sdio_sd8786’ defined but not used [-Wunused-const-variable=]
static const struct mwifiex_sdio_device mwifiex_sdio_sd8786 = {
^~~~~~~~~~~~~~~~~~~
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200902141155.30144-1-yuehaibing@huawei.com
In file included from drivers/net/wireless/marvell/mwifiex//cmdevt.c:26:0:
drivers/net/wireless/marvell/mwifiex//wmm.h:41:17: warning: ‘tos_to_tid_inv’ defined but not used [-Wunused-const-variable=]
static const u8 tos_to_tid_inv[] = {
^~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex//wmm.h:34:18: warning: ‘mwifiex_1d_to_wmm_queue’ defined but not used [-Wunused-const-variable=]
static const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
^~~~~~~~~~~~~~~~~~~~~~~
move the variables definition to .c file, and leave declarations
in the header file to fix these warnings.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200902140846.29024-1-yuehaibing@huawei.com
A new warning in clang points out when macro expansion might result in a
GNU C statement expression. There is an instance of this in the mwifiex
driver:
drivers/net/wireless/marvell/mwifiex/cmdevt.c:217:34: warning: '}' and
')' tokens terminating statement expression appear in different macro
expansion contexts [-Wcompound-token-split-by-macro]
host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex/fw.h:519:46: note: expanded from
macro 'HostCmd_SET_SEQ_NO_BSS_INFO'
(((type) & 0x000f) << 12); }
^
This does not appear to be a real issue. Removing the braces and
replacing them with parentheses will fix the warning and not change the
meaning of the code.
Fixes: 5e6e3a92b9 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/1146
Reported-by: Andy Lavr <andy.lavr@gmail.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200901070834.1015754-1-natechancellor@gmail.com
Saves on 10's of complains about 'defined but not used' variables.
Fixes the following W=1 kernel build warning(s):
In file included from drivers/net/wireless/marvell/mwifiex/main.h:57,
from drivers/net/wireless/marvell/mwifiex/main.c:22:
drivers/net/wireless/marvell/mwifiex/pcie.h:310:41: warning: ‘mwifiex_pcie8997’ defined but not used [-Wunused-const-variable=]
310 | static const struct mwifiex_pcie_device mwifiex_pcie8997 = {
| ^~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex/pcie.h:300:41: warning: ‘mwifiex_pcie8897’ defined but not used [-Wunused-const-variable=]
300 | static const struct mwifiex_pcie_device mwifiex_pcie8897 = {
| ^~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex/pcie.h:292:41: warning: ‘mwifiex_pcie8766’ defined but not used [-Wunused-const-variable=]
292 | static const struct mwifiex_pcie_device mwifiex_pcie8766 = {
| ^~~~~~~~~~~~~~~~
NB: Repeats 10's of times - snipped for brevity.
Cc: Amitkumar Karwar <amitkarwar@gmail.com>
Cc: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Cc: Xinming Hu <huxinming820@gmail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200826093401.1458456-2-lee.jones@linaro.org
Kerneldoc expects attributes/parameters to be in '@*.: ' format and
gets confused if the variable does not follow the type/attribute
definitions.
Fixes the following W=1 kernel build warning(s):
drivers/net/wireless/marvell/libertas_tf/if_usb.c:56: warning: Function parameter or member 'urb' not described in 'if_usb_write_bulk_callback'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:73: warning: Function parameter or member 'cardp' not described in 'if_usb_free'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:146: warning: Function parameter or member 'intf' not described in 'if_usb_probe'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:146: warning: Function parameter or member 'id' not described in 'if_usb_probe'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:244: warning: Function parameter or member 'intf' not described in 'if_usb_disconnect'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:272: warning: Function parameter or member 'cardp' not described in 'if_usb_send_fw_pkt'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:372: warning: Function parameter or member 'cardp' not described in 'usb_tx_block'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:372: warning: Function parameter or member 'payload' not described in 'usb_tx_block'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:372: warning: Function parameter or member 'nb' not described in 'usb_tx_block'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:372: warning: Function parameter or member 'data' not described in 'usb_tx_block'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:625: warning: Function parameter or member 'urb' not described in 'if_usb_receive'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:714: warning: Function parameter or member 'priv' not described in 'if_usb_host_to_card'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:714: warning: Function parameter or member 'type' not described in 'if_usb_host_to_card'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:714: warning: Function parameter or member 'payload' not described in 'if_usb_host_to_card'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:714: warning: Function parameter or member 'nb' not described in 'if_usb_host_to_card'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:742: warning: Function parameter or member 'cardp' not described in 'if_usb_issue_boot_command'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:742: warning: Function parameter or member 'ivalue' not described in 'if_usb_issue_boot_command'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:766: warning: Function parameter or member 'data' not described in 'check_fwfile_format'
drivers/net/wireless/marvell/libertas_tf/if_usb.c:766: warning: Function parameter or member 'totlen' not described in 'check_fwfile_format'
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-28-lee.jones@linaro.org
Fixes the following W=1 kernel build warning(s):
drivers/net/wireless/marvell/libertas/firmware.c:134: warning: Function parameter or member 'device' not described in 'lbs_get_firmware_async'
drivers/net/wireless/marvell/libertas/firmware.c:134: warning: Excess function parameter 'dev' description in 'lbs_get_firmware_async'
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-27-lee.jones@linaro.org
Fixes the following W=1 kernel build warning(s):
drivers/net/wireless/marvell/libertas/main.c:727: warning: Function parameter or member 't' not described in 'lbs_cmd_timeout_handler'
drivers/net/wireless/marvell/libertas/main.c:727: warning: Excess function parameter 'data' description in 'lbs_cmd_timeout_handler'
drivers/net/wireless/marvell/libertas/main.c:761: warning: Function parameter or member 't' not described in 'lbs_tx_lockup_handler'
drivers/net/wireless/marvell/libertas/main.c:761: warning: Excess function parameter 'data' description in 'lbs_tx_lockup_handler'
drivers/net/wireless/marvell/libertas/main.c:784: warning: Function parameter or member 't' not described in 'auto_deepsleep_timer_fn'
drivers/net/wireless/marvell/libertas/main.c:784: warning: Excess function parameter 'data' description in 'auto_deepsleep_timer_fn'
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-15-lee.jones@linaro.org
Kerneldoc expects attributes/parameters to be in '@*.: ' format and
gets confused if the variable does not follow the type/attribute
definitions.
Also demote one stray non-kernel-doc header.
Fixes the following W=1 kernel build warning(s):
drivers/net/wireless/marvell/libertas_tf/cmd.c:44: warning: Function parameter or member 'priv' not described in 'lbtf_cmd_copyback'
drivers/net/wireless/marvell/libertas_tf/cmd.c:44: warning: Function parameter or member 'extra' not described in 'lbtf_cmd_copyback'
drivers/net/wireless/marvell/libertas_tf/cmd.c:44: warning: Function parameter or member 'resp' not described in 'lbtf_cmd_copyback'
drivers/net/wireless/marvell/libertas_tf/cmd.c:80: warning: Function parameter or member 'priv' not described in 'lbtf_update_hw_spec'
drivers/net/wireless/marvell/libertas_tf/cmd.c:150: warning: Function parameter or member 'priv' not described in 'lbtf_set_channel'
drivers/net/wireless/marvell/libertas_tf/cmd.c:150: warning: Function parameter or member 'channel' not described in 'lbtf_set_channel'
drivers/net/wireless/marvell/libertas_tf/cmd.c:277: warning: Function parameter or member 'priv' not described in '__lbtf_cleanup_and_insert_cmd'
drivers/net/wireless/marvell/libertas_tf/cmd.c:277: warning: Function parameter or member 'cmdnode' not described in '__lbtf_cleanup_and_insert_cmd'
drivers/net/wireless/marvell/libertas_tf/cmd.c:442: warning: Function parameter or member 'priv' not described in 'lbtf_allocate_cmd_buffer'
drivers/net/wireless/marvell/libertas_tf/cmd.c:490: warning: Function parameter or member 'priv' not described in 'lbtf_free_cmd_buffer'
drivers/net/wireless/marvell/libertas_tf/cmd.c:527: warning: Function parameter or member 'priv' not described in 'lbtf_get_cmd_ctrl_node'
drivers/net/wireless/marvell/libertas_tf/cmd.c:561: warning: Function parameter or member 'priv' not described in 'lbtf_execute_next_command'
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-8-lee.jones@linaro.org
There are only 2 kernel-doc headers in this file and both are
incorrect. The first one does not attempt to document the function at
all and the second one is suffering from severe doc-rot; the format is
wrong and only 1 out of 3 parameters are being documented.
Fixes the following W=1 kernel build warning(s):
drivers/net/wireless/marvell/libertas_tf/main.c:129: warning: Function parameter or member 't' not described in 'command_timer_fn'
drivers/net/wireless/marvell/libertas_tf/main.c:554: warning: Function parameter or member 'card' not described in 'lbtf_add_card'
drivers/net/wireless/marvell/libertas_tf/main.c:554: warning: Function parameter or member 'dmdev' not described in 'lbtf_add_card'
drivers/net/wireless/marvell/libertas_tf/main.c:554: warning: Function parameter or member 'ops' not described in 'lbtf_add_card'
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-5-lee.jones@linaro.org
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200817090637.26887-12-allen.cryptic@gmail.com
Following commit e186967865 ("mwifiex: Prevent memory corruption
handling keys") the mwifiex driver fails to authenticate with certain
networks, specifically networks with 256 bit keys, and repeatedly asks
for the password. The kernel log repeats the following lines (id and
bssid redacted):
mwifiex_pcie 0000:01:00.0: info: trying to associate to '<id>' bssid <bssid>
mwifiex_pcie 0000:01:00.0: info: associated to bssid <bssid> successfully
mwifiex_pcie 0000:01:00.0: crypto keys added
mwifiex_pcie 0000:01:00.0: info: successfully disconnected from <bssid>: reason code 3
Tracking down this problem lead to the overflow check introduced by the
aforementioned commit into mwifiex_ret_802_11_key_material_v2(). This
check fails on networks with 256 bit keys due to the current storage
size for AES keys in struct mwifiex_aes_param being only 128 bit.
To fix this issue, increase the storage size for AES keys to 256 bit.
Fixes: e186967865 ("mwifiex: Prevent memory corruption handling keys")
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Reported-by: Kaloyan Nikolov <konik98@gmail.com>
Tested-by: Kaloyan Nikolov <konik98@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200825153829.38043-1-luzmaximilian@gmail.com
syzbot is reporting that del_timer_sync() is called from
mwifiex_usb_cleanup_tx_aggr() from mwifiex_unregister_dev() without
checking timer_setup() from mwifiex_usb_tx_init() was called [1].
Ganapathi Bhat proposed a possibly cleaner fix, but it seems that
that fix was forgotten [2].
"grep -FrB1 'del_timer' drivers/ | grep -FA1 '.function)'" says that
currently there are 28 locations which call del_timer[_sync]() only if
that timer's function field was initialized (because timer_setup() sets
that timer's function field). Therefore, let's use same approach here.
[1] https://syzkaller.appspot.com/bug?id=26525f643f454dd7be0078423e3cdb0d57744959
[2] https://lkml.kernel.org/r/CA+ASDXMHt2gq9Hy+iP_BYkWXsSreWdp3_bAfMkNcuqJ3K+-jbQ@mail.gmail.com
Reported-by: syzbot <syzbot+dc4127f950da51639216@syzkaller.appspotmail.com>
Cc: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Cc: Brian Norris <briannorris@chromium.org>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200821082720.7716-1-penguin-kernel@I-love.SAKURA.ne.jp
The error message if 'pci_set_consistent_dma_mask()' fails is misleading.
The function call uses 32 bits, but the error message reports 64.
Moreover, according to the comment above 'dma_set_mask_and_coherent()'
definition, such an error can never happen.
So, simplify code, axe the misleading message and use
'dma_set_mask_and_coherent()' instead of 'dma_set_mask()' +
'dma_set_coherent_mask()'
While at it, make some clean-up:
- add # when reporting allocated length to be consistent between
functions
- s/consistent/coherent/
- s/unsigned int/u32/ to be consistent between functions
- align some code
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819071853.113185-1-christophe.jaillet@wanadoo.fr
A possible call chain is as follow:
mwifiex_sdio_interrupt (sdio.c)
--> mwifiex_main_process (main.c)
--> mwifiex_process_cmdresp (cmdevt.c)
--> mwifiex_process_sta_cmdresp (sta_cmdresp.c)
--> mwifiex_ret_802_11_scan (scan.c)
--> mwifiex_parse_single_response_buf (scan.c)
'mwifiex_sdio_interrupt()' is an interrupt function.
Also note that 'mwifiex_ret_802_11_scan()' already uses GFP_ATOMIC.
So use GFP_ATOMIC instead of GFP_KERNEL when memory is allocated in
'mwifiex_parse_single_response_buf()'.
Fixes: 7c6fa2a843 ("mwifiex: use cfg80211 dynamic scan table and cfg80211_get_bss API")
or
Fixes: 601216e12c ("mwifiex: process RX packets in SDIO IRQ thread directly")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200809092906.744621-1-christophe.jaillet@wanadoo.fr
Second set of patches for v5.9. mt76 has most of patches this time.
Otherwise it's just smaller fixes and cleanups to other drivers.
There was a major conflict in mt76 driver between wireless-drivers and
wireless-drivers-next. I solved that by merging the former to the
latter.
Major changes:
rtw88
* add support for ieee80211_ops::change_interface
* add support for enabling and disabling beacon
* add debugfs file for testing h2c
mt76
* ARP filter offload for 7663
* runtime power management for 7663
* testmode support for mfg calibration
* support for more channels
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Merge tag 'wireless-drivers-next-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for v5.9
Second set of patches for v5.9. mt76 has most of patches this time.
Otherwise it's just smaller fixes and cleanups to other drivers.
There was a major conflict in mt76 driver between wireless-drivers and
wireless-drivers-next. I solved that by merging the former to the
latter.
Major changes:
rtw88
* add support for ieee80211_ops::change_interface
* add support for enabling and disabling beacon
* add debugfs file for testing h2c
mt76
* ARP filter offload for 7663
* runtime power management for 7663
* testmode support for mfg calibration
* support for more channels
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Johan Hedberg says:
====================
pull request: bluetooth-next 2020-07-31
Here's the main bluetooth-next pull request for 5.9:
- Fix firmware filenames for Marvell chipsets
- Several suspend-related fixes
- Addedd mgmt commands for runtime configuration
- Multiple fixes for Qualcomm-based controllers
- Add new monitoring feature for mgmt
- Fix handling of legacy cipher (E4) together with security level 4
- Add support for Realtek 8822CE controller
- Fix issues with Chinese controllers using fake VID/PID values
- Multiple other smaller fixes & improvements
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The length of the key comes from the network and it's a 16 bit number. It
needs to be capped to prevent a buffer overflow.
Fixes: 5e6e3a92b9 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200708115857.GA13729@mwanda
ENOTSUPP (double PP) is internal linux kernel code 524 available only in
kernel include file linux/errno.h and not exported to userspace.
EOPNOTSUPP (OP; double PP) is standard code 95 for reporting 'operation not
supported' available via kernel include file uapi/asm-generic/errno.h.
ENOTSUP (single P) is alias for EOPNOTSUPP defined only in userspace
include file bits/errno.h and not available in kernel.
Because Linux kernel does not support ENOTSUP (single P) and because
userspace does not support ENOTSUPP (double PP), report error code for
'operation not supported' via EOPNOTSUPP macro.
This patch fixes problem that mwifiex kernel driver sends to userspace
unsupported error codes like: "failed: -524 (No error information)".
After applying this patch userspace see: "failed: -95 (Not supported)".
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200703112151.18917-1-pali@kernel.org
This macro is already used in mwifiex driver for specifying upper limit and
is defined to value 3. So use it also in struct ieee80211_iface_limit.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200626152938.12737-1-pali@kernel.org
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.
This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.
There are a variety of indentation styles found.
a) 4 spaces + '---help---'
b) 7 spaces + '---help---'
c) 8 spaces + '---help---'
d) 1 space + 1 tab + '---help---'
e) 1 tab + '---help---' (correct indentation)
f) 1 tab + 1 space + '---help---'
g) 1 tab + 2 spaces + '---help---'
In order to convert all of them to 1 tab + 'help', I ran the
following commend:
$ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Pull networking updates from David Miller:
1) Allow setting bluetooth L2CAP modes via socket option, from Luiz
Augusto von Dentz.
2) Add GSO partial support to igc, from Sasha Neftin.
3) Several cleanups and improvements to r8169 from Heiner Kallweit.
4) Add IF_OPER_TESTING link state and use it when ethtool triggers a
device self-test. From Andrew Lunn.
5) Start moving away from custom driver versions, use the globally
defined kernel version instead, from Leon Romanovsky.
6) Support GRO vis gro_cells in DSA layer, from Alexander Lobakin.
7) Allow hard IRQ deferral during NAPI, from Eric Dumazet.
8) Add sriov and vf support to hinic, from Luo bin.
9) Support Media Redundancy Protocol (MRP) in the bridging code, from
Horatiu Vultur.
10) Support netmap in the nft_nat code, from Pablo Neira Ayuso.
11) Allow UDPv6 encapsulation of ESP in the ipsec code, from Sabrina
Dubroca. Also add ipv6 support for espintcp.
12) Lots of ReST conversions of the networking documentation, from Mauro
Carvalho Chehab.
13) Support configuration of ethtool rxnfc flows in bcmgenet driver,
from Doug Berger.
14) Allow to dump cgroup id and filter by it in inet_diag code, from
Dmitry Yakunin.
15) Add infrastructure to export netlink attribute policies to
userspace, from Johannes Berg.
16) Several optimizations to sch_fq scheduler, from Eric Dumazet.
17) Fallback to the default qdisc if qdisc init fails because otherwise
a packet scheduler init failure will make a device inoperative. From
Jesper Dangaard Brouer.
18) Several RISCV bpf jit optimizations, from Luke Nelson.
19) Correct the return type of the ->ndo_start_xmit() method in several
drivers, it's netdev_tx_t but many drivers were using
'int'. From Yunjian Wang.
20) Add an ethtool interface for PHY master/slave config, from Oleksij
Rempel.
21) Add BPF iterators, from Yonghang Song.
22) Add cable test infrastructure, including ethool interfaces, from
Andrew Lunn. Marvell PHY driver is the first to support this
facility.
23) Remove zero-length arrays all over, from Gustavo A. R. Silva.
24) Calculate and maintain an explicit frame size in XDP, from Jesper
Dangaard Brouer.
25) Add CAP_BPF, from Alexei Starovoitov.
26) Support terse dumps in the packet scheduler, from Vlad Buslov.
27) Support XDP_TX bulking in dpaa2 driver, from Ioana Ciornei.
28) Add devm_register_netdev(), from Bartosz Golaszewski.
29) Minimize qdisc resets, from Cong Wang.
30) Get rid of kernel_getsockopt and kernel_setsockopt in order to
eliminate set_fs/get_fs calls. From Christoph Hellwig.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2517 commits)
selftests: net: ip_defrag: ignore EPERM
net_failover: fixed rollback in net_failover_open()
Revert "tipc: Fix potential tipc_aead refcnt leak in tipc_crypto_rcv"
Revert "tipc: Fix potential tipc_node refcnt leak in tipc_rcv"
vmxnet3: allow rx flow hash ops only when rss is enabled
hinic: add set_channels ethtool_ops support
selftests/bpf: Add a default $(CXX) value
tools/bpf: Don't use $(COMPILE.c)
bpf, selftests: Use bpf_probe_read_kernel
s390/bpf: Use bcr 0,%0 as tail call nop filler
s390/bpf: Maintain 8-byte stack alignment
selftests/bpf: Fix verifier test
selftests/bpf: Fix sample_cnt shared between two threads
bpf, selftests: Adapt cls_redirect to call csum_level helper
bpf: Add csum_level helper for fixing up csum levels
bpf: Fix up bpf_skb_adjust_room helper's skb csum setting
sfc: add missing annotation for efx_ef10_try_update_nic_stats_vf()
crypto/chtls: IPv6 support for inline TLS
Crypto/chcr: Fixes a coccinile check error
Crypto/chcr: Fixes compilations warnings
...
Firmware for sd8997 chipset is distributed by Marvell package and also as
part of the linux-firmware repository in filename sdsd8997_combo_v4.bin.
This patch fixes mwifiex driver to load correct firmware file for sd8997.
Fixes: 6d85ef00d9 ("mwifiex: add support for 8997 chipset")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Firmware for sd8977 chipset is distributed by Marvell package and also as
part of the linux-firmware repository in filename sdsd8977_combo_v2.bin.
This patch fixes mwifiex driver to load correct firmware file for sd8977.
Fixes: 1a0f547831 ("mwifiex: add support for sd8977 chipset")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
SD8997 firmware sends TLV_TYPE_MAX_CONN with struct hw_spec_max_conn to
inform kernel about maximum number of p2p connections and stations in AP
mode.
During initialization of SD8997 wifi chip kernel prints warning:
mwifiex_sdio mmc0:0001:1: Unknown GET_HW_SPEC TLV type: 0x217
This patch adds support for parsing TLV_TYPE_MAX_CONN (0x217) and sets
appropriate cfg80211 member 'max_ap_assoc_sta' from retrieved structure.
It allows userspace to retrieve NL80211_ATTR_MAX_AP_ASSOC_STA attribute.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200521123559.29028-1-pali@kernel.org
During initialization of SD8997 wifi chip kernel prints warnings:
mwifiex_sdio mmc0:0001:1: Unknown api_id: 3
mwifiex_sdio mmc0:0001:1: Unknown api_id: 4
This patch adds support for parsing all api ids provided by SD8997
firmware.
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200521123444.28957-1-pali@kernel.org
Add _WLAN suffix to macro names for consistency with other Marvell macros.
These IDs represents wlan function of combo bt/wlan cards. Other functions
of these cards have different IDs.
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200522144412.19712-4-pali@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
* hwsim improvements from Jouni and myself, to be able to
test more scenarios easily
* some more HE (802.11ax) support
* some initial S1G (sub 1 GHz) work for fractional MHz channels
* some (action) frame registration updates to help DPP support
* along with other various improvements/fixes
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Merge tag 'mac80211-next-for-net-next-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
One batch of changes, containing:
* hwsim improvements from Jouni and myself, to be able to
test more scenarios easily
* some more HE (802.11ax) support
* some initial S1G (sub 1 GHz) work for fractional MHz channels
* some (action) frame registration updates to help DPP support
* along with other various improvements/fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The mwifiex_cfg80211_dump_station() uses static variable for iterating
over a linked list of all associated stations (when the driver is in UAP
role). This has a race condition if .dump_station is called in parallel
for multiple interfaces. This corruption can be triggered by registering
multiple SSIDs and calling, in parallel for multiple interfaces
iw dev <iface> station dump
[16750.719775] Unable to handle kernel paging request at virtual address dead000000000110
...
[16750.899173] Call trace:
[16750.901696] mwifiex_cfg80211_dump_station+0x94/0x100 [mwifiex]
[16750.907824] nl80211_dump_station+0xbc/0x278 [cfg80211]
[16750.913160] netlink_dump+0xe8/0x320
[16750.916827] netlink_recvmsg+0x1b4/0x338
[16750.920861] ____sys_recvmsg+0x7c/0x2b0
[16750.924801] ___sys_recvmsg+0x70/0x98
[16750.928564] __sys_recvmsg+0x58/0xa0
[16750.932238] __arm64_sys_recvmsg+0x28/0x30
[16750.936453] el0_svc_common.constprop.3+0x90/0x158
[16750.941378] do_el0_svc+0x74/0x90
[16750.944784] el0_sync_handler+0x12c/0x1a8
[16750.948903] el0_sync+0x114/0x140
[16750.952312] Code: f9400003 f907f423 eb02007f 54fffd60 (b9401060)
[16750.958583] ---[ end trace c8ad181c2f4b8576 ]---
This patch drops the use of the static iterator, and instead every time
the function is called iterates to the idx-th position of the
linked-list.
It would be better to convert the code not to use linked list for
associated stations storage (since the chip has a limited number of
associated stations anyway - it could just be an array). Such a change
may be proposed in the future. In the meantime this patch can backported
into stable kernels in this simple form.
Fixes: 8baca1a34d ("mwifiex: dump station support in uap mode")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200515075924.13841-1-pali@kernel.org
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200507185914.GA15124@embeddedor
Currently there is a check if priv is null when calling lbtf_remove_card
but not in a previous call to if_usb_reset_dev that can also dereference
priv. Fix this by also only calling lbtf_remove_card if priv is null.
It is noteable that there don't seem to be any bugs reported that the
null pointer dereference has ever occurred, so I'm not sure if the null
check is required, but since we're doing a null check anyway it should
be done for both function calls.
Addresses-Coverity: ("Dereference before null check")
Fixes: baa0280f08 ("libertas_tf: don't defer firmware loading until start()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200501173900.296658-1-colin.king@canonical.com
gcc-10 reports a warning for mwifiex_cmd_802_11_key_material_v1:
drivers/net/wireless/marvell/mwifiex/sta_cmd.c: In function 'mwifiex_cmd_802_11_key_material_v1':
cc1: warning: writing 16 bytes into a region of size 0 [-Wstringop-overflow=]
In file included from drivers/net/wireless/marvell/mwifiex/sta_cmd.c:23:
drivers/net/wireless/marvell/mwifiex/fw.h:993:9: note: at offset 0 to object 'action' with size 2 declared here
993 | __le16 action;
| ^~~~~~
As the warning makes no sense, I reported it as a bug for gcc. In the
meantime using a temporary pointer for the key data makes the code easier
to read and stops the warning.
Fixes: 5e6e3a92b9 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94881
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200430213101.135134-4-arnd@arndb.de
Almost all drivers below cfg80211 get the API wrong (except for
cfg80211) and are unable to cope with multiple registrations for
the same frame type, which is valid due to the match filter.
This seems to indicate the API is wrong, and we should maintain
the full information in cfg80211 instead of the drivers.
Change the API to no longer inform the driver about individual
registrations and unregistrations, but rather every time about
the entire state of the entire wiphy and single wdev, whenever
it may have changed. This also simplifies the code in cfg80211
as it no longer has to track exactly what was unregistered and
can free things immediately.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200417124300.f47f3828afc8.I7f81ef59c2c5a340d7075fb3c6d0e08e8aeffe07@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fix the following coccicheck warning:
drivers/net/wireless/marvell/libertas/cmdresp.c:225:5-8: Unneeded
variable: "ret". Return "0" on line 355
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200413082022.22380-1-yanaijie@huawei.com
Fix the following coccicheck warning:
drivers/net/wireless/marvell/libertas/mesh.c:833:5-8: Unneeded variable:
"ret". Return "0" on line 874
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200410090942.27239-1-yanaijie@huawei.com
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200225020413.GA8057@embeddedor
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200225011709.GA601@embeddedor
In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.
The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).
[1] commit bebcfd272d ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")
Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
hard_header_len provides limitations for things like AF_PACKET, such
that we don't allow transmitting packets smaller than this.
needed_headroom provides a suggested minimum headroom for SKBs, so that
we can trivally add our headers to the front.
The latter is the correct field to use in this case, while the former
mostly just prevents sending small AF_PACKET frames.
In any case, mwifiex already does its own bounce buffering [1] if we
don't have enough headroom, so hints (not hard limits) are all that are
needed.
This is the essentially the same bug (and fix) that brcmfmac had, fixed
in commit cb39288fd6 ("brcmfmac: use ndev->needed_headroom to reserve
additional header space").
[1] mwifiex_hard_start_xmit():
if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
[...]
/* Insufficient skb headroom - allocate a new skb */
Fixes: 5e6e3a92b9 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Acked-by: Ganapathi Bhat <ganapathi.gbhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Tom Rix