This patch (as1633) changes slightly the way usbcore handled
submissions of URBs that are already active. It will now return
-EBUSY rather than -EINVAL, and it will call WARN_ONCE to draw
people's attention to the bug.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1632b) fixes a bug in ehci-hcd. The USB core uses
urb->hcpriv to determine whether or not an URB is active; host
controller drivers are supposed to set this pointer to a non-NULL
value when an URB is queued. However ehci-hcd sets it to NULL for
isochronous URBs, which defeats the check in usbcore.
In itself this isn't a big deal. But people have recently found that
certain sequences of actions will cause the snd-usb-audio driver to
reuse URBs without waiting for them to complete. In the absence of
proper checking by usbcore, the URBs get added to their endpoint list
twice. This leads to list corruption and a system freeze.
The patch makes ehci-hcd assign a meaningful value to urb->hcpriv for
isochronous URBs. Improving robustness always helps.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Artem S. Tashkinov <t.artem@lycos.com>
Reported-by: Christof Meerwald <cmeerw@cmeerw.org>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1630) cleans up a few minor items resulting from the
split-up of the ehci-hcd driver:
Remove the product_desc string from the ehci_driver_overrides
structure. All drivers will use the generic "EHCI Host
Controller" string. (This was requested by Felipe Balbi.)
Allow drivers to pass a NULL pointer to ehci_init_driver()
if they don't have to override any settings.
Remove a #define symbol that is no longer used from the
ChipIdea host driver.
Rename overrides to pci_overrides in ehci-pci.c, for
consistency with ehci-platform.c.
Mark the *_overrides structures as __initdata.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1631) fixes a bug that shows up when a config change
fails for a device under an xHCI controller. The controller needs to
be told to disable the endpoints that have been enabled for the new
config. The existing code does this, but before storing the
information about which endpoints were enabled! As a result, any
second attempt to install the new config is doomed to fail because
xhci-hcd will refuse to enable an endpoint that is already enabled.
The patch optimistically initializes the new endpoints' device
structures before asking the device to switch to the new config. If
the request fails then the endpoint information is already stored, so
we can use usb_hcd_alloc_bandwidth() to disable the endpoints with no
trouble. The rest of the error path is slightly more complex now; we
have to disable the new interfaces and call put_device() rather than
simply deallocating them.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: Matthias Schniedermeyer <ms@citd.de>
CC: Sarah Sharp <sarah.a.sharp@linux.intel.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
renesas_usbhs implements ->pullup() method, switches over
to devm_request_irq(), adds support for DMA Engine and
got a few miscelaneous cleanups.
The NCM gadget got an endianness fix and the Ethernet
gadget a frame size fix.
We're finally removing the g_file_storage gadget and
sticking to g_mass_storage and the new tcm_usb_gadget
gadgets since that was a huge duplicaton of effort anyway.
While removing g_file_storage, we also had to fix a bunch
of defconfigs which were still pointing to the old gadget.
There's a big series getting us closer to being able to
introduce our configfs interface. The series converts
functions into loadable modules which will, eventually,
be registered to the configfs interface.
Other than that there's the usual typo fixes and miscelaneous
cleanups all over the place.
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Merge tag 'gadget-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
USB gadget patches from Felipe:
"usb: gadget: patches for v3.8
renesas_usbhs implements ->pullup() method, switches over
to devm_request_irq(), adds support for DMA Engine and
got a few miscelaneous cleanups.
The NCM gadget got an endianness fix and the Ethernet
gadget a frame size fix.
We're finally removing the g_file_storage gadget and
sticking to g_mass_storage and the new tcm_usb_gadget
gadgets since that was a huge duplicaton of effort anyway.
While removing g_file_storage, we also had to fix a bunch
of defconfigs which were still pointing to the old gadget.
There's a big series getting us closer to being able to
introduce our configfs interface. The series converts
functions into loadable modules which will, eventually,
be registered to the configfs interface.
Other than that there's the usual typo fixes and miscelaneous
cleanups all over the place."
We can finaly drop HAVE_CLK dependency from exynos glue layer
now that clk API provides no-op stubs when it's not linked
into the kernel.
We're also switching over event buffer allocation to devm_kzalloc()
and moving the allocation out of dwc3_core_init() so that can be
re-used when implementing PM support for v3.9.
After the introduction of PLATFORM_DEVID_AUTO, we can also drop the
homebrew platform device ID handling we had on dwc3 core and let
driver core take care of that for us.
Exynos glue layer learns about DeviceTree and drops platform_data
support completely.
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Merge tag 'dwc3-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
USB dwc3 patches from Felipe:
"usb: dwc3: patches for v3.8
We can finaly drop HAVE_CLK dependency from exynos glue layer
now that clk API provides no-op stubs when it's not linked
into the kernel.
We're also switching over event buffer allocation to devm_kzalloc()
and moving the allocation out of dwc3_core_init() so that can be
re-used when implementing PM support for v3.9.
After the introduction of PLATFORM_DEVID_AUTO, we can also drop the
homebrew platform device ID handling we had on dwc3 core and let
driver core take care of that for us.
Exynos glue layer learns about DeviceTree and drops platform_data
support completely."
We have here the usual set of cleanups for the MUSB driver; a
big set of patches converting platform_device_del() and
platform_device_put() into platform_device_unregister().
Another big set was applied converting to module_platform_driver()
macro in order to reduce some boilerplate code from all glue
layers.
Other than that, we had a series fixing one known silicon errata
where we couldn't read a few registers. In order to fix that
we're now using shadow variables for reads and only writing
to the registers which are known to break functionality when
read.
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Merge tag 'musb-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
USB musb merge from Felipe:
"usb: musb: patches for v3.8 merge window
We have here the usual set of cleanups for the MUSB driver; a
big set of patches converting platform_device_del() and
platform_device_put() into platform_device_unregister().
Another big set was applied converting to module_platform_driver()
macro in order to reduce some boilerplate code from all glue
layers.
Other than that, we had a series fixing one known silicon errata
where we couldn't read a few registers. In order to fix that
we're now using shadow variables for reads and only writing
to the registers which are known to break functionality when
read."
Not too many patches this time. First two patches are only
cleanups where one of them switches over to module_platform_driver
macro and the second removes inclusion of <mach/iomap.h> and is
part of a bigger set of include cleanups from the Tegra folks.
The only substantial change here is the addition of a driver
for Renesas' R-Car USB Phy controller.
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Merge tag 'xceiv-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into USB-next
Pull USB phy patches from Felipe:
"usb: phy: patches for v3.8 merge window
Not too many patches this time. First two patches are only
cleanups where one of them switches over to module_platform_driver
macro and the second removes inclusion of <mach/iomap.h> and is
part of a bigger set of include cleanups from the Tegra folks.
The only substantial change here is the addition of a driver
for Renesas' R-Car USB Phy controller."
This reverts commit d8c3ef256f.
Above mentioned change was made along with multi usb phy change and
adding DT support for nop transceiver. But other two changes did not
make it to mainline. This in effect makes dsps musb wrapper unusable
even for single instance.
Hence revert it so that at least single instance can be supported.
Cc: stable@vger.kernel.org # v3.7
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Convert USB descriptor's fields to CPU byte order before using locally in USB
NCM gadget driver.
Tested on MIPS32 big-endian device.
Signed-off-by: Dmytro Milinevskyy <milinevskyy@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Checking skb->len against ETH_FRAME_LEN assumes a 1514
ethernet frame size. With an 802.1Q VLAN header, ethernet
frame length can now be 1518. Validate frame length against that.
Signed-off-by: Ian Coolidge <iancoolidge@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit removes the /sys/devices/platform/<UDC>/udc/<UDC>/is_dualspeed
file and is_dualspeeed line from /sys/devices/platform/ci13xxx_*/udc/device
file.
The is_dualspeed file is superseded by maximum_speed in the same directory
and is_dualspeed line in device file is superseded by max_speed line in
the same file.
The maximum_speed/max_speed specifies maximum speed supported by UDC.
To check if dualspeeed is supported, check if the value is >= 3.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since function-line macros are to be avoided, this commit replaces
the fsg_lun_is_open() macro with a static inline function.
While at it, this commit also adds “inline” modifier to the
fsg_lun_from_dev() function.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
storage_common.c has been used by both file_storage.c and f_mass_storage.c
which had some different requirements in a few places. To accomodate for
that, storage_common.c provided configuratian macros which were to be
defined (or not) prior to the file #inclusion. Because now
file_storage.c is no longer with us, we can remove support for those
macros and thus simplify the code slightly.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since g_file_storage has been removed, this commit removes code from
the storage_common.c file which has been used by file_storage.c only
(and not by f_mass_storage.c).
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The File-backed Storage Gadget (g_file_storage) gadget has been replaced
with Mass Storage Gadget (g_mass_storage) which uses the composite
framework. This commit removes g_file_storage (and most references to it).
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
received data will break if it was bulk pipe and large data size,
because pipe kept BUF PID even though it doesn't have enough buffer.
To avoid this issue, renesas_usbhs can use transfer counter.
Pipe PID will be NAK if it didn't have enough buffer by this patch.
renesas_usbhs has strange address mapping.
Thus, it is difficult to calculate transfer counter setting address.
This patch use fixed table for it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
commit 380f0d2 (usb: dwc3: core: switch event
buffer allocation to devm_kzalloc()) was incomplete
leaving a trailing kfree(evt) in an error exit
path.
Fix this problem by removing the trailing kfree(evt).
Cc: Julia Lawall <julia.lawall@lip6.fr>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch is based on the discussion of a previous patch to fix an issue
where the omap2430 musb driver is not working for N9/N950.
Moving all the interrupt handling to the devices. Avoids inclusion of generic
interrupt and breakage due to sometimes misleading CONFIG options. This makes
sure usb always works if on of the subdrivers is chosen. Tested on Nokia N9/N950.
Partially clean up CONFIG_SOC_OMAP3430 which is not necessary in the cases
where I removed it. Also helps with the removal work of those options that
Tony Lindgren predicted would happen at some point.
Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Now that DaVinci glue layer can be modular, we must export cppi_interrupt()
that it may call...
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
renesas_usbhs attaches pipe to endpoint when urb was queued, and it will be
detached when transfer was done. Multi device controlling was enabled by this
behavior.
Now renesas_usbhs driver tried to wait until detaching if urb was queued to
endpoint which already has been attached to pipe, and it created strange driver
behavior.
But it can re-use this attached pipe if multi urb was queued. This patch
implements it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Because usbhsh_hub_status_data() will be called many times,
there are too many obstructive/useless debug informations if driver has #define DEBUG.
Thus, other important dev_dbg() information will hide.
This patch removed obstructive/useless dev_dbg().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
am335x uses nop transceiver driver and need to enable builtin phy
by writing into usb_ctrl register available in system control
module register space. This is being added at musb glue driver
layer until a separate system control module driver is available.
Proper solution is to make use of control module driver, but it is
not expected to be ready soon.
Other options available are providing control module register space
as memory resource via DT or using omap hwmod.
DT approach has been rejected by Rob Herring, while resources are
being moved from hwmod to DT. And both of the above approaches
require that control module registers be configured in wrapper
itself requring a quirk in driver as well as DT or hwmod.
Here another option is used, providing driver with control module
register physical address. Even though this a hack, there is no other
option left till control module driver is ready. As of now only
am335x is using dsps wrapper, and so driver is made aware of am335x
control module physical address.
Please note that this is a temporary arrangment till omap control
module driver is available.
[afzal@ti.com: limit quirk to dsps wrapper]
Signed-off-by: Santhapuri, Damodar <damodar.santhapuri@ti.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
dsps wrapper is now dt only. This requires that resources be obtained
using index and not name, modify accordingly.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Currently multiple phy's of the same type are not supported, hence
reduce musb instances to one. This helps in supporting at least one
instance of musb, rather than having none. Even without this, it was
observed that both instances were working (by luck), but this holds
good iff wrapper is part of Image. And it is not correct for both
controller's to be associated with same phy, here it was working
because phy is a nop one. And having wrapper as a module and
rmmod'ing would crash.
This can be reverted once multi phy support for same type is available
and driver is enhanced to make use of it.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
dsps wrapper is dt only, it cannot execute platform callbacks.
Presence of this would cause NULL dereference, hence remove it.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We are removing plat data which was used till now to init and
exit phy. We no longer need this since dwc3-core takes care of
initializing and shutting-down the phy using usb_phy_init()
and usb_phy_shutdown().
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adds support to parse probe data for
dwc3-exynos driver using device tree.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch (as1629) fixes a build error in the ChipIdea host driver
when compiled for the ARM architecture. The error was introduced
by commit 99f91934a9 (USB: EHCI: make
ehci-platform a separate driver).
The fix is simple; an additional header-file #include is needed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Relax condition of building the reset interface stubs in
drivers/usb/early/ehci-dbgp.c from USB_EHCI_HCD to just USB, to also
cover the chipidea driver re-using code from ehci-hcd.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1627) splits the ehci-hcd core code, which has become a
separate library module, out from the ChipIdea host driver. Instead
of #include-ing ehci-hcd.c directly, the ChipIdea module will now use
the ehci-hcd library in a normal fashion.
This fixes a build error caused by commit
3e02320399 (USB: EHCI: prepare to make
ehci-hcd a library module); I had forgotten about the unorthodox way
the ChipIdea driver uses the ehci-hcd code.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the former code, we have a race condition between the first interrupt
and the regs field initilization in the usb_hcd structure.
If the OHCI irq fires before hcd->regs is set, we are getting a null
pointer dereference in ohci_irq.
When calling usb_add_hcd(), it first executes the reset() callback,
then enables the ohci interrupt, and finally executes the start()
callback. So moving the ohci_init() call which actually initializes the
reg field from start() to reset() should remove the race.
Tested by enabling the external HSIC hub in the bootloader on an exynos5
machine and booting. With the former code, this triggers an early interrupt
about 50% of the boots and a subsequent kernel panic in ohci_irq when trying
to access the registers.
Cc: Olof Johansson <olofj@chromium.org>
Cc: Doug Anderson <dianders@chromium.org>
Cc: Arjun.K.V <arjun.kv@samsung.com>
Cc: Vikas Sajjan <vikas.sajjan@samsung.com>
Cc: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1628) fixes a build error in the ehci-platform driver
when compiled for the PowerPC architecture. The error was introduced
by commit 99f91934a9 (USB: EHCI: make
ehci-platform a separate driver).
The fix is simple; a few additional header-file #includes are needed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1626) splits the ehci-platform code from ehci-hcd out
into its own separate driver module.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1625) splits the PCI portion of ehci-hcd out into its
own separate driver module, called ehci-pci. Consistently with the
current practice, the decision whether to build this module is not
user-configurable. If EHCI and PCI are enabled then the module will
be built, always.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1624) prepares ehci-hcd for being split up into a core
library and separate platform driver modules. A generic
ehci_hc_driver structure is created, containing all the "standard"
values, and a new mechanism is added whereby a driver module can
specify a set of overrides to those values. In addition the
ehci_setup(), ehci_suspend(), and ehci_resume() routines need to be
EXPORTed for use by the drivers.
As a side effect of this change, a few routines no longer need to be
marked __maybe_unused.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This replaced the handcrafted id handling by the PLATFORM_DEVID_AUTO
value which should do the same thing.
This patch probably also fixes ux500 because I did not find the "musbid"
variable to remove. And we close a tiny-unlikely race window becuase the
old code gave the id back before device was destroyed in the remove
case.
[ balbi@ti.com : fixed up two failed hunks when applying patch ]
Cc: B, Ravi <ravibabu@ti.com>
Cc: Santhapuri, Damodar <damodar.santhapuri@ti.com>
Cc: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Cc: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adds Renesas R-Car USB phy driver.
It supports R8A7779 chip at this point.
R-Car has some USB controllers, but has only one phy-initializer.
So, this driver is counting users.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The exception is needed on big endian systems too.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No need for a vendor specific probe exception just to
match on the interface class.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are many modems in addition to the D-Link DWM 652
exposing the CD interface in modem mode, and some expose
an integrated card reader as well. Always ignore these
interfaces.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1623) removes the ehci_port_power() routine and all the
places that call it. There's no reason for ehci-hcd to change the
port power settings; the hub driver takes care of all that stuff.
There is one exception: When the controller is resumed from
hibernation or following a loss of power, the ports that are supposed
to be handed over to a companion controller must be powered on first.
Otherwise the handover won't work. This process is not visible to the
hub driver, so it has to be handled in ehci-hcd.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1622) removes the USB-2.1 Link Power Management code
from the ehci-hcd driver. This code was never integrated with
usbcore, it is full of bugs, and it was not getting used by anybody.
However, the debugging code for dumping the LPM-related fields in the
EHCI registers is left in place. In theory it might be useful to see
these values, even though we don't use them.
This essentially amounts to a partial revert of commit
aa4d834298 (USB: EHCI: EHCI 1.1
addendum: preparation) and an almost full revert of commit
48f2497014 (USB: EHCI: EHCI 1.1
addendum: Basic LPM feature support) plus its follow-ons.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch (as1621) removes the limit on the number of loops allowed
in hub_tt_work(). The value is arbitrary, and it's silly to have a
limit in the first place -- anything beyond the limit would not get
handled.
Besides, it's most unlikely that we'll ever need to clear more than a
couple of TT buffers at any time.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove all MODULE_VERSION macros and driver-version information (except
for garmin_gps which uses it in a status reply).
It is the kernel version that matters and not some private version
scheme which rarely even gets updated.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 16bit read access to MUSB_INTRTXE results in an 32bit read
access which also reads INTRRX and therefore may lose interrupts.
This patch uses a shadow register of MUSB_INTRTXE so we only perform
write access to it.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 16bit read access to MUSB_INTRRXE results in an 32bit read
access which also reads INTRUSB and therefore may lose interrupts.
This patch uses a shadow register of MUSB_INTRRXE so we only perform
write access to it.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 8bit read access to FADDR results in an 32bit read
access which also reads INTRTX and therefore may lose interrupts.
This patch removes any reads to FADDR as they are not really required.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 8bit read access to MUSB_POWER results in an 32bit read
access which also reads INTRTX and therefore may lose interrupts.
This patch tries to minimize reads to MUSB_POWER and perform them only
when required.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Alan Stern