Commit Graph

1356 Commits

Author SHA1 Message Date
Yang Yingliang 7a82750993 usb: musb: sunxi: Switch to use dev_err_probe() helper
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927072616.913672-6-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-27 10:36:07 +02:00
Yang Yingliang 82d788750e usb: musb: jz4740: Switch to use dev_err_probe() helper
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927072616.913672-5-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-27 10:36:07 +02:00
Yang Yingliang a806f67f15 usb: musb: cppi41: Switch to use dev_err_probe() helper
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927072616.913672-4-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-27 10:36:06 +02:00
Yang Yingliang 92150ca664 usb: musb: da8xx: Switch to use dev_err_probe() helper
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927072616.913672-3-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-27 10:36:06 +02:00
Yang Yingliang 7be7231d41 usb: musb: core: Switch to use dev_err_probe() helper
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927072616.913672-2-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-27 10:36:06 +02:00
Robin Guo eea4c860c3 usb: musb: Fix musb_gadget.c rxstate overflow bug
The usb function device call musb_gadget_queue() adds the passed
request to musb_ep::req_list,If the (request->length > musb_ep->packet_sz)
and (is_buffer_mapped(req) return false),the rxstate() will copy all data
in fifo to request->buf which may cause request->buf out of bounds.

Fix it by add the length check :
fifocnt = min_t(unsigned, request->length - request->actual, fifocnt);

Signed-off-by: Robin Guo <guoweibin@inspur.com>
Link: https://lore.kernel.org/r/20220906102119.1b071d07a8391ff115e6d1ef@inspur.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-22 15:52:30 +02:00
Arnd Bergmann a3f2fd2274 musb: fix USB_MUSB_TUSB6010 dependency
Turning on NOP_USB_XCEIV as builtin broke the TUSB6010 driver because
of an older issue with the depencency.

It is not necessary to forbid NOP_USB_XCEIV=y in combination with
USB_MUSB_HDRC=m, but only the reverse, which causes the link failure
from the original Kconfig change.

Use the correct dependency to still allow NOP_USB_XCEIV=n or
NOP_USB_XCEIV=y but forbid NOP_USB_XCEIV=m when USB_MUSB_HDRC=m
to fix the multi_v7_defconfig for tusb.

Fixes: ab37a7a890 ("ARM: multi_v7_defconfig: Make NOP_USB_XCEIV driver built-in")
Fixes: c044247965 ("usb: musb: Fix randconfig build issues for Kconfig options")
Cc: stable <stable@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20220818135737.3143895-10-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-18 16:33:06 +02:00
Linus Torvalds 965a9d75e3 Tracing updates for 5.20 / 6.0
- Runtime verification infrastructure
   This is the biggest change for this pull request. It introduces the
   runtime verification that is necessary for running Linux on safety
   critical systems. It allows for deterministic automata models to be
   inserted into the kernel that will attach to tracepoints, where the
   information on these tracepoints will move the model from state to state.
   If a state is encountered that does not belong to the model, it will then
   activate a given reactor, that could just inform the user or even panic
   the kernel (for which safety critical systems will detect and can recover
   from).
 
 - Two monitor models are also added: Wakeup In Preemptive (WIP - not to be
   confused with "work in progress"), and Wakeup While Not Running (WWNR).
 
 - Added __vstring() helper to the TRACE_EVENT() macro to replace several
   vsnprintf() usages that were all doing it wrong.
 
 - eprobes now can have their event autogenerated when the event name is left
   off.
 
 - The rest is various cleanups and fixes.
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Merge tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:

 - Runtime verification infrastructure

   This is the biggest change here. It introduces the runtime
   verification that is necessary for running Linux on safety critical
   systems.

   It allows for deterministic automata models to be inserted into the
   kernel that will attach to tracepoints, where the information on
   these tracepoints will move the model from state to state.

   If a state is encountered that does not belong to the model, it will
   then activate a given reactor, that could just inform the user or
   even panic the kernel (for which safety critical systems will detect
   and can recover from).

 - Two monitor models are also added: Wakeup In Preemptive (WIP - not to
   be confused with "work in progress"), and Wakeup While Not Running
   (WWNR).

 - Added __vstring() helper to the TRACE_EVENT() macro to replace
   several vsnprintf() usages that were all doing it wrong.

 - eprobes now can have their event autogenerated when the event name is
   left off.

 - The rest is various cleanups and fixes.

* tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (50 commits)
  rv: Unlock on error path in rv_unregister_reactor()
  tracing: Use alignof__(struct {type b;}) instead of offsetof()
  tracing/eprobe: Show syntax error logs in error_log file
  scripts/tracing: Fix typo 'the the' in comment
  tracepoints: It is CONFIG_TRACEPOINTS not CONFIG_TRACEPOINT
  tracing: Use free_trace_buffer() in allocate_trace_buffers()
  tracing: Use a struct alignof to determine trace event field alignment
  rv/reactor: Add the panic reactor
  rv/reactor: Add the printk reactor
  rv/monitor: Add the wwnr monitor
  rv/monitor: Add the wip monitor
  rv/monitor: Add the wip monitor skeleton created by dot2k
  Documentation/rv: Add deterministic automata instrumentation documentation
  Documentation/rv: Add deterministic automata monitor synthesis documentation
  tools/rv: Add dot2k
  Documentation/rv: Add deterministic automaton documentation
  tools/rv: Add dot2c
  Documentation/rv: Add a basic documentation
  rv/include: Add instrumentation helper functions
  rv/include: Add deterministic automata monitor definition via C macros
  ...
2022-08-05 09:41:12 -07:00
Jilin Yuan d5851c2480 usb/musb: fix repeated words in comments
Delete the redundant word 'mode'.
 Delete the redundant word 'than'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220716134457.46535-1-yuanjilin@cdjrlc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-27 14:34:05 +02:00
Steven Rostedt (Google) 84149fc768 usb: musb: tracing: Use the new __vstring() helper
Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.

Link: https://lkml.kernel.org/r/20220705224750.532345354@goodmis.org

Cc: Bin Liu <b-liu@ti.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-07-19 11:20:24 -04:00
Yang Yingliang 98ceba7559 usb: musb: mpfs: add missing clk_disable_unprepare() in mpfs_remove()
clock source is prepared and enabled by clk_prepare_enable()
in probe function, but no disable or unprepare in remove.

Fixes: 7a96b6ea90 ("usb: musb: Add support for PolarFire SoC's musb controller")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220628140527.1404439-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-29 21:02:05 +02:00
Dan Carpenter 21cdd6a0e8 usb: musb: mpfs: Fix error codes in probe()
These error paths return success but they need to return a negative
error code.

Fixes: 7a96b6ea90 ("usb: musb: Add support for PolarFire SoC's musb controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YrVmLEc/FOEzNdzj@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-24 13:36:47 +02:00
Sergey Shtylyov 196a58bdec usb: musb: core: drop redundant checks
In musb_{save|restore}_context() the expression '&musb->endpoints[i]' just
cannot be NULL, so the checks have no sense at all -- after dropping them,
the local variables 'hw_ep' are no longer necessary, so drop them as well.

Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.

Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/3f8f60d9-f1b5-6b2c-1222-39b156151a22@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-21 16:39:16 +02:00
Conor Dooley 7a96b6ea90 usb: musb: Add support for PolarFire SoC's musb controller
Add support for Microchips's PolarFire SoC's musb controller in host,
peripheral and otg mode.

Tested-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220613114642.1615292-2-conor.dooley@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-21 16:35:17 +02:00
Saurav Girepunje 757bdf1f2f usb: musb: remove schedule work called after flush
In musb_remove() cancel_delayed_work_sync(&musb->irq_work)
is called which flush the irq_work work queue.

After cancel delayed work, musb_remove() call
musb_gadget_cleanup->usb_del_gadget_udc->usb_del_gadget
->usb_gadget_remove_driver->usb_gadget_udc_stop->udc
->gadget->ops->udc_stop(udc->gadget);

Where musb_gadget_stop() call "schedule_delayed_work(&musb->irq_work, 0)”
which is already cancel/flush.

So remove the schedule_delayed_work(&musb->irq_work, 0);
from musb_gadget_stop function.

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YqDnxkWZV2KfZh5q@Sauravs-MacBook-Air.local
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-10 11:52:40 +02:00
AngeloGioacchino Del Regno 5c29e86499 usb: musb: mediatek: Use clk_bulk API to simplify clock operations
This driver uses three clocks and there's no special handling, they're
either enabled or disabled sequentially: migrate to the clk_bulk API
to simplify clock handling.

This patch brings no functional changes.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220404145558.93340-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-21 19:23:46 +02:00
Miaoqian Lin 424bef51fa usb: musb: Fix missing of_node_put() in omap2430_probe
The device_node pointer is returned by of_parse_phandle() with refcount
incremented. We should use of_node_put() on it when done.

Fixes: 8934d3e4d0 ("usb: musb: omap2430: Don't use omap_get_control_dev()")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220309111033.24487-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-21 19:20:28 +02:00
H. Nikolaus Schaller 2390710647 partially Revert "usb: musb: Set the DT node on the child device"
This reverts the omap2430 changes of

commit cf081d009c ("usb: musb: Set the DT node on the child device")

Since v5.17-rc1, musb is broken on the gta04 and openpandora devices
(omap3530/dm3730). BeagleBone Black (am335x) seems to work.

Symptoms of this bug are

a) main symptom

[   21.336517] using random host ethernet address
[   21.341430] using host ethernet address: 32:70:05:18:ff:78
[   21.341461] using self ethernet address: 46:10:3a:b3:af:d9
[   21.358184] usb0: HOST MAC 32:70:05:18:ff:78
[   21.376678] usb0: MAC 46:10:3a:b3:af:d9
[   21.388305] using random self ethernet address
[   21.393371] using random host ethernet address
[   21.398162] g_ether gadget: Ethernet Gadget, version: Memorial Day 2008
[   21.421081] g_ether gadget: g_ether ready
[   21.492156] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   21.691345] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   21.803192] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   21.819427] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   22.124450] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   22.168518] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   22.179382] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.213592] musb-hdrc musb-hdrc.1.auto: pm runtime get failed in musb_gadget_queue
[   23.221832] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.227905] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.239440] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.401000] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.407073] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.426361] musb-hdrc musb-hdrc.1.auto: Could not enable: -22
[   23.734466] musb-hdrc musb-hdrc.1.auto: pm runtime get failed in musb_gadget_queue
[   23.742462] musb-hdrc musb-hdrc.1.auto: pm runtime get failed in musb_gadget_queue
[   23.750396] musb-hdrc musb-hdrc.1.auto: pm runtime get failed in musb_gadget_queue
... (repeats with high frequency)

This stops if the USB cable is unplugged and restarts if it is plugged in again.

b) also found in the log

[    6.498107] ------------[ cut here ]------------
[    6.502960] WARNING: CPU: 0 PID: 868 at arch/arm/mach-omap2/omap_hwmod.c:1885 _enable+0x50/0x234
[    6.512207] omap_hwmod: usb_otg_hs: enabled state can only be entered from initialized, idle, or disabled state
[    6.522766] Modules linked in: omap2430(+) bmp280_i2c bmp280 itg3200 at24 tsc2007 leds_tca6507 bma180 hmc5843_i2c hmc5843_core industrialio_triggered_buffer lis3lv02d_i2c kfifo_buf lis3lv02d phy_twl4030_usb snd_soc_omap_mcbsp snd_soc_ti_sdma musb_hdrc snd_soc_twl4030 gnss_sirf twl4030_vibra twl4030_madc twl4030_charger twl4030_pwrbutton gnss industrialio ehci_omap omapdrm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm drm_panel_orientation_quirks cec
[    6.566436] CPU: 0 PID: 868 Comm: udevd Not tainted 5.16.0-rc5-letux+ #8251
[    6.573730] Hardware name: Generic OMAP36xx (Flattened Device Tree)
[    6.580322] [<c010ed30>] (unwind_backtrace) from [<c010a1d0>] (show_stack+0x10/0x14)
[    6.588470] [<c010a1d0>] (show_stack) from [<c0897c14>] (dump_stack_lvl+0x40/0x4c)
[    6.596405] [<c0897c14>] (dump_stack_lvl) from [<c0130cc4>] (__warn+0xb4/0xdc)
[    6.604003] [<c0130cc4>] (__warn) from [<c0130d5c>] (warn_slowpath_fmt+0x70/0x9c)
[    6.611846] [<c0130d5c>] (warn_slowpath_fmt) from [<c011f4d4>] (_enable+0x50/0x234)
[    6.619903] [<c011f4d4>] (_enable) from [<c012081c>] (omap_hwmod_enable+0x28/0x40)
[    6.627838] [<c012081c>] (omap_hwmod_enable) from [<c0120ff4>] (omap_device_enable+0x4c/0x78)
[    6.636779] [<c0120ff4>] (omap_device_enable) from [<c0121030>] (_od_runtime_resume+0x10/0x3c)
[    6.645812] [<c0121030>] (_od_runtime_resume) from [<c05c688c>] (__rpm_callback+0x3c/0xf4)
[    6.654510] [<c05c688c>] (__rpm_callback) from [<c05c6994>] (rpm_callback+0x50/0x54)
[    6.662628] [<c05c6994>] (rpm_callback) from [<c05c66b0>] (rpm_resume+0x448/0x4e4)
[    6.670593] [<c05c66b0>] (rpm_resume) from [<c05c6784>] (__pm_runtime_resume+0x38/0x50)
[    6.678985] [<c05c6784>] (__pm_runtime_resume) from [<bf14ab20>] (musb_init_controller+0x350/0xa5c [musb_hdrc])
[    6.689727] [<bf14ab20>] (musb_init_controller [musb_hdrc]) from [<c05bccb8>] (platform_probe+0x58/0xa8)
[    6.699737] [<c05bccb8>] (platform_probe) from [<c05badf0>] (really_probe+0x170/0x2fc)
[    6.708068] [<c05badf0>] (really_probe) from [<c05bb040>] (__driver_probe_device+0xc4/0xd8)
[    6.716827] [<c05bb040>] (__driver_probe_device) from [<c05bb084>] (driver_probe_device+0x30/0xac)
[    6.726226] [<c05bb084>] (driver_probe_device) from [<c05bb3d0>] (__device_attach_driver+0x94/0xb4)
[    6.735717] [<c05bb3d0>] (__device_attach_driver) from [<c05b93f8>] (bus_for_each_drv+0xa0/0xb4)
[    6.744934] [<c05b93f8>] (bus_for_each_drv) from [<c05bb248>] (__device_attach+0xc0/0x134)
[    6.753631] [<c05bb248>] (__device_attach) from [<c05b9fcc>] (bus_probe_device+0x28/0x80)
[    6.762207] [<c05b9fcc>] (bus_probe_device) from [<c05b7e40>] (device_add+0x5fc/0x788)
[    6.770507] [<c05b7e40>] (device_add) from [<c05bd240>] (platform_device_add+0x70/0x1bc)
[    6.779022] [<c05bd240>] (platform_device_add) from [<bf177830>] (omap2430_probe+0x260/0x2d4 [omap2430])
[    6.789001] [<bf177830>] (omap2430_probe [omap2430]) from [<c05bccb8>] (platform_probe+0x58/0xa8)
[    6.798309] [<c05bccb8>] (platform_probe) from [<c05badf0>] (really_probe+0x170/0x2fc)
[    6.806610] [<c05badf0>] (really_probe) from [<c05bb040>] (__driver_probe_device+0xc4/0xd8)
[    6.815399] [<c05bb040>] (__driver_probe_device) from [<c05bb084>] (driver_probe_device+0x30/0xac)
[    6.824798] [<c05bb084>] (driver_probe_device) from [<c05bb4b4>] (__driver_attach+0xc4/0xd8)
[    6.833648] [<c05bb4b4>] (__driver_attach) from [<c05b9308>] (bus_for_each_dev+0x64/0xa0)
[    6.842224] [<c05b9308>] (bus_for_each_dev) from [<c05ba248>] (bus_add_driver+0x148/0x1a4)
[    6.850891] [<c05ba248>] (bus_add_driver) from [<c05bbd1c>] (driver_register+0xb4/0xf8)
[    6.859313] [<c05bbd1c>] (driver_register) from [<c0101f54>] (do_one_initcall+0x90/0x1c8)
[    6.867889] [<c0101f54>] (do_one_initcall) from [<c0893968>] (do_init_module+0x4c/0x204)
[    6.876373] [<c0893968>] (do_init_module) from [<c01b4c30>] (load_module+0x13f0/0x1928)
[    6.884796] [<c01b4c30>] (load_module) from [<c01b53a0>] (sys_finit_module+0xa0/0xc0)
[    6.893005] [<c01b53a0>] (sys_finit_module) from [<c0100080>] (ret_fast_syscall+0x0/0x54)
[    6.901580] Exception stack(0xc2807fa8 to 0xc2807ff0)
[    6.906890] 7fa0:                   b6e517d4 00052068 00000006 b6e509f8 00000000 b6e5131c
[    6.915466] 7fc0: b6e517d4 00052068 cd718000 0000017b 00020000 00037f78 00050048 00063368
[    6.924011] 7fe0: bed8fef0 bed8fee0 b6e4ac4b b6f55a42
[    6.929321] ---[ end trace d715ff121b58763c ]---

c) git bisect result on testing for "musb-hdrc" in the console log:

cf081d009c is the first bad commit
commit cf081d009c
Author: Rob Herring <robh@kernel.org>
Date:   Wed Dec 15 17:07:57 2021 -0600

  usb: musb: Set the DT node on the child device

  The musb glue drivers just copy the glue resources to the musb child device.
  Instead, set the musb child device's DT node pointer to the parent device's
  node so that platform_get_irq_byname() can find the resources in the DT.
  This removes the need for statically populating the IRQ resources from the
  DT which has been deprecated for some time.

  Signed-off-by: Rob Herring <robh@kernel.org>
  Link: https://lore.kernel.org/r/20211215230756.2009115-3-robh@kernel.org
  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/musb/am35x.c    | 2 ++
drivers/usb/musb/da8xx.c    | 2 ++
drivers/usb/musb/jz4740.c   | 1 +
drivers/usb/musb/mediatek.c | 2 ++
drivers/usb/musb/omap2430.c | 1 +
drivers/usb/musb/ux500.c    | 1 +
6 files changed, 9 insertions(+)

Reverting this patch makes musb work again as before.

Fixes: cf081d009c ("usb: musb: Set the DT node on the child device")
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Link: https://lore.kernel.org/r/f62f5fc11f9ecae7e57f3fd66939e051bd3b11fc.1646744166.git.hns@goldelico.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-15 15:49:15 +01:00
Lad Prabhakar ce1d37cb76 usb: musb: dsps: Use platform_get_irq_byname() to get the interrupt
platform_get_resource_byname(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq_byname().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211220010411.12075-7-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21 08:51:57 +01:00
Rob Herring cf081d009c usb: musb: Set the DT node on the child device
The musb glue drivers just copy the glue resources to the musb child device.
Instead, set the musb child device's DT node pointer to the parent device's
node so that platform_get_irq_byname() can find the resources in the DT.
This removes the need for statically populating the IRQ resources from the
DT which has been deprecated for some time.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211215230756.2009115-3-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-17 17:00:45 +01:00
Rob Herring 9879c81b68 usb: musb: Drop unneeded resource copying
The platform device resources are copied by the driver core, so there is
no need for the caller to do it when creating a platform device. Just pass
the parent resources to the child device directly.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211215230756.2009115-2-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-17 17:00:45 +01:00
Viraj Shah 21b5fcdccb usb: musb: Balance list entry in musb_gadget_queue
musb_gadget_queue() adds the passed request to musb_ep::req_list. If the
endpoint is idle and it is the first request then it invokes
musb_queue_resume_work(). If the function returns an error then the
error is passed to the caller without any clean-up and the request
remains enqueued on the list. If the caller enqueues the request again
then the list corrupts.

Remove the request from the list on error.

Fixes: ea2f35c01d ("usb: musb: Fix sleeping function called from invalid context for hdrc glue")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Viraj Shah <viraj.shah@linutronix.de>
Link: https://lore.kernel.org/r/20211021093644.4734-1-viraj.shah@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-22 11:12:45 +02:00
Roman Stratiienko 02f8b13603 usb: musb: sunxi: Don't print error on MUSB_ULPI_BUSCONTROL access
Error message appears during suspend, where musb driver is storing
the register state in musb_save_context():
```
musb-sunxi 1c19000.usb: Error unknown readb offset 112
```

Print warning instead to avoid confusion.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Link: https://lore.kernel.org/r/20211019131244.1568560-1-r.stratiienko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-22 11:12:14 +02:00
Greg Kroah-Hartman c03fb16baf Merge 5.15-rc6 into usb-next
We need the usb fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-18 09:40:52 +02:00
Miquel Raynal c2115b2b16 usb: musb: dsps: Fix the probe error path
Commit 7c75bde329 ("usb: musb: musb_dsps: request_irq() after
initializing musb") has inverted the calls to
dsps_setup_optional_vbus_irq() and dsps_create_musb_pdev() without
updating correctly the error path. dsps_create_musb_pdev() allocates and
registers a new platform device which must be unregistered and freed
with platform_device_unregister(), and this is missing upon
dsps_setup_optional_vbus_irq() error.

While on the master branch it seems not to trigger any issue, I observed
a kernel crash because of a NULL pointer dereference with a v5.10.70
stable kernel where the patch mentioned above was backported. With this
kernel version, -EPROBE_DEFER is returned the first time
dsps_setup_optional_vbus_irq() is called which triggers the probe to
error out without unregistering the platform device. Unfortunately, on
the Beagle Bone Black Wireless, the platform device still living in the
system is being used by the USB Ethernet gadget driver, which during the
boot phase triggers the crash.

My limited knowledge of the musb world prevents me to revert this commit
which was sent to silence a robot warning which, as far as I understand,
does not make sense. The goal of this patch was to prevent an IRQ to
fire before the platform device being registered. I think this cannot
ever happen due to the fact that enabling the interrupts is done by the
->enable() callback of the platform musb device, and this platform
device must be already registered in order for the core or any other
user to use this callback.

Hence, I decided to fix the error path, which might prevent future
errors on mainline kernels while also fixing older ones.

Fixes: 7c75bde329 ("usb: musb: musb_dsps: request_irq() after initializing musb")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20211005221631.1529448-1-miquel.raynal@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-13 14:12:49 +02:00
Randy Dunlap fde1fbedba usb: musb: select GENERIC_PHY instead of depending on it
The kconfig symbol GENERIC_PHY says:
  All the users of this framework should select this config.
and around 136 out of 138 drivers do so, so change USB_MUSB_MEDIATEK
to do so also.

This (also) fixes a long circular dependency problem for an upcoming
patch.

Fixes: 0990366bab ("usb: musb: Add support for MediaTek musb controller")
Cc: Bin Liu <b-liu@ti.com>
Cc: Min Guo <min.guo@mediatek.com>
Cc: Yonglong Wu <yonglong.wu@mediatek.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20211005235747.5588-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-13 14:00:41 +02:00
Greg Kroah-Hartman ae9a614988 Merge 5.15-rc3 into usb-next
We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-27 16:34:40 +02:00
Dan Carpenter 517c7bf99b usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned()
This is writing to the first 1 - 3 bytes of "val" and then writing all
four bytes to musb_writel().  The last byte is always going to be
garbage.  Zero out the last bytes instead.

Fixes: 550a7375fe ("USB: Add MUSB and TUSB support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210916135737.GI25094@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-21 16:38:21 +02:00
Yang Yingliang 14651496a3 usb: musb: tusb6010: check return value after calling platform_get_resource()
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210915034925.2399823-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-21 16:26:49 +02:00
Sungbo Eo 7042b10141 usb: musb: mediatek: Expose role-switch control to userspace
The allow_userspace_control flag enables manual role-switch from userspace.
Turn this feature on like several other USB DRD controller drivers.

Tested-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
Link: https://lore.kernel.org/r/20210830155903.13907-3-mans0n@gorani.run
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-14 11:55:22 +02:00
Nadezda Lutovinova 7c75bde329 usb: musb: musb_dsps: request_irq() after initializing musb
If IRQ occurs between calling  dsps_setup_optional_vbus_irq()
and  dsps_create_musb_pdev(), then null pointer dereference occurs
since glue->musb wasn't initialized yet.

The patch puts initializing of neccesery data before registration
of the interrupt handler.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210819163323.17714-1-lutovinova@ispras.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-26 13:22:16 +02:00
Tony Lindgren 68d9f95d6f usb: musb: Fix suspend and resume issues for PHYs on I2C and SPI
As the USB PHYs typically are on I2C or SPI bus for the 2430 glue layer,
we need configure the PHYs early for suspend.

The musb glue layer we need to suspend only after musb_suspend() in
suspend_late.

Fixes: 62d472d8ad ("usb: musb: Add missing PM suspend and resume functions for 2430 glue")
Reported-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210727104134.52800-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-27 16:31:02 +02:00
Tony Lindgren 318324e6df usb: musb: Implement tracing for state change events
The devctl register on musb is the only way to get state information
on musb. The hardware can easily get confused because it tries to do
things on it's own automagically, and things like slow VBUS rise can
make things fail.

Let's make it easier to debug the ongoing state change issues that
keep popping up on regular basis and add tracing support.

With these changes we can easily trace musb state change events with:

echo 1 > /sys/kernel/debug/tracing/events/musb/musb_state/enable
cat /sys/kernel/debug/tracing/trace_pipe
echo 0 > /sys/kernel/debug/tracing/events/musb/musb_state/enable

Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Andreas Kemnade <andreas@kemnade.info>
Cc: Bhushan Shah <bshah@kde.org>
Cc: Drew Fustini <drew@beagleboard.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210604080536.12185-2-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-14 10:25:16 +02:00
Tony Lindgren e2ff8815f3 usb: musb: Simplify cable state handling
Simplify cable state handling a bit to leave out duplicated code.
We are just scheduling work and showing state info if a recheck is
needed. No intended functional changes.

Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Andreas Kemnade <andreas@kemnade.info>
Cc: Bhushan Shah <bshah@kde.org>
Cc: Drew Fustini <drew@beagleboard.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210604080536.12185-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-14 10:25:16 +02:00
Greg Kroah-Hartman 37fdb7c90f Linux 5.13-rc6
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Merge tag 'v5.13-rc6' into usb-next

We want the usb fixes in here as well, and this resolves some merge
issues with:
	drivers/usb/dwc3/debugfs.c
	drivers/usb/dwc3/gadget.c

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-14 09:18:07 +02:00
Thomas Petazzoni b65ba0c362 usb: musb: fix MUSB_QUIRK_B_DISCONNECT_99 handling
In commit 92af4fc6ec ("usb: musb: Fix suspend with devices
connected for a64"), the logic to support the
MUSB_QUIRK_B_DISCONNECT_99 quirk was modified to only conditionally
schedule the musb->irq_work delayed work.

This commit badly breaks ECM Gadget on AM335X. Indeed, with this
commit, one can observe massive packet loss:

$ ping 192.168.0.100
...
15 packets transmitted, 3 received, 80% packet loss, time 14316ms

Reverting this commit brings back a properly functioning ECM
Gadget. An analysis of the commit seems to indicate that a mistake was
made: the previous code was not falling through into the
MUSB_QUIRK_B_INVALID_VBUS_91, but now it is, unless the condition is
taken.

Changing the logic to be as it was before the problematic commit *and*
only conditionally scheduling musb->irq_work resolves the regression:

$ ping 192.168.0.100
...
64 packets transmitted, 64 received, 0% packet loss, time 64475ms

Fixes: 92af4fc6ec ("usb: musb: Fix suspend with devices connected for a64")
Cc: stable@vger.kernel.org
Tested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Tested-by: Drew Fustini <drew@beagleboard.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Link: https://lore.kernel.org/r/20210528140446.278076-1-thomas.petazzoni@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-02 16:58:08 +02:00
Tony Lindgren 7d076c2f55 usb: musb: Check devctl status again for a spurious session request
On start-up, we can get a spurious session request interrupt with nothing
connected. After that the devctl session bit will silently clear, but the
musb hardware is never idled until a cable is plugged in, or the glue
layer module is reloaded.

Let's just check the session bit again in 3 seconds in peripheral mode
to catch the issue.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210518150615.53464-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-21 14:07:57 +02:00
Tony Lindgren 62d472d8ad usb: musb: Add missing PM suspend and resume functions for 2430 glue
Looks like we are missing suspend and resume functions for pm_ops that
are needed to idle the hardware for system suspend for 2430 glue layer.

We can rely on the driver internal PM runtime state, and call driver
functions to idle the hardware on suspend if needed. There is no need
to add a dependency to PM runtime for system suspend here.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210518074449.17070-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-21 14:07:16 +02:00
Greg Kroah-Hartman 9fbf82c764 Merge 5.13-rc2 into usb-next
We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-17 09:45:58 +02:00
Saurav Girepunje 3c5e0d0e9d usb: musb: Remove unused function argument dma, qh, offset, length
Remove unused function argument dma, qh, offset, length from
musb_tx_dma_set_mode_cppi_tusb() in musb_host.c

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/20210508170317.24403-3-saurav.girepunje@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10 16:21:09 +02:00
Saurav Girepunje 6cfe9036ac usb: musb: Remove unused local variable dma, urb, offset
Remove unused function argument struct dma_controller *dma,
struct urb *urb and u32 offset from musb_tx_dma_set_mode_mentor.

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/20210508170317.24403-2-saurav.girepunje@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10 16:21:09 +02:00
Saurav Girepunje cd783e5abb usb: musb: Remove duplicate declaration of functions
Remove duplicate declaration of below functions in musb_host.h
	musb_host_cleanup
	musb_host_tx
	musb_host_rx
	musb_root_disconnect

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/20210508093512.GA11194@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10 16:20:41 +02:00
Saurav Girepunje 0826dae3d8 usb: musb: Fix spelling mistake "tranfer" -> "transfer"
Fix spelling mistake "tranfer" -> "transfer" in musb_gadget.c file.

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/20210508072156.GA14656@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10 16:20:37 +02:00
Christophe JAILLET d9ff1096a8 usb: musb: Fix an error message
'ret' is known to be 0 here.
Initialize 'ret' with the expected error code before using it.

Fixes: 0990366bab ("usb: musb: Add support for MediaTek musb controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/69f514dc7134e3c917cad208e73cc650cb9e2bd6.1620159879.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10 16:17:57 +02:00
Saurav Girepunje c8604656b0 usb: musb: musb_core: Add space after that ','
Fix Error reported by checkpatch.pl

ERROR: space required after that ',' (ctx:VxV)
+#define	can_bulk_split(musb,type) \
        	                   ^

ERROR: space required after that ',' (ctx:VxV)
+#define	can_bulk_combine(musb,type) \
        	                     ^

Signed-off-by: Saurav Girepunje <saurav.girepunje@google.com>
Link: https://lore.kernel.org/r/20210418174720.GA59520@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-22 10:49:22 +02:00
Bixuan Cui 9535b99533 usb: musb: fix PM reference leak in musb_irq_work()
pm_runtime_get_sync will increment pm usage counter even it failed.
thus a pairing decrement is needed.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Link: https://lore.kernel.org/r/20210408091836.55227-1-cuibixuan@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09 16:02:44 +02:00
Tony Lindgren 92af4fc6ec usb: musb: Fix suspend with devices connected for a64
Pinephone running on Allwinner A64 fails to suspend with USB devices
connected as reported by Bhushan Shah <bshah@kde.org>. Reverting
commit 5fbf7a2534 ("usb: musb: fix idling for suspend after
disconnect interrupt") fixes the issue.

Let's add suspend checks also for suspend after disconnect interrupt
quirk handling like we already do elsewhere.

Fixes: 5fbf7a2534 ("usb: musb: fix idling for suspend after disconnect interrupt")
Reported-by: Bhushan Shah <bshah@kde.org>
Tested-by: Bhushan Shah <bshah@kde.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210324071142.42264-1-tony@atomide.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-26 14:50:59 +01:00
Paul Cercueil 23e32a595e usb: musb: jz4740: Add missing CR to error strings
If you pass a string that is not terminated with a carriage return to
dev_err(), it will eventually be printed with a carriage return, but
not right away, since the kernel will wait for a pr_cont().

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210123142502.16980-4-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-05 10:27:18 +01:00
Paul Cercueil eb44cef954 usb: musb: dma: Remove unused variable
Remove unused-but-set devctl variable.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210123142502.16980-3-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-05 10:27:18 +01:00
Paul Cercueil ae2938c358 usb: musb: Fix NULL check on struct musb_request field
The 'request' variable is a pointer to the 'request' field of the
struct musb_request 'req' pointer. It only worked until now because
the 'request' field is the first one in the musb_request structure, but
as soon as that changes, the check will be invalid.

Fix it preventively by doing the NULL-check on the 'req' pointer
instead.

Suggested-by: Maarten ter Huurne <maarten@treewalker.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210123142502.16980-2-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-05 10:27:18 +01:00