[PATCH v4 2/7] Input: use input_device_enabled()

[Marek Szyprowski]

Hi Andrzej,

On 08.06.2020 13:22, Andrzej Pietrasiewicz wrote:
> Use the newly added helper in relevant input drivers.
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p at collabora.com>

This patch landed recently in linux-next as commit d69f0a43c677 ("Input: 
use input_device_enabled()"). Sadly it causes following warning during 
system suspend/resume cycle on ARM 32bit Samsung Exynos5250-based Snow 
Chromebook with kernel compiled from exynos_defconfig:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 1777 at drivers/input/input.c:2230 
input_device_enabled+0x68/0x6c
Modules linked in: cmac bnep mwifiex_sdio mwifiex sha256_generic 
libsha256 sha256_arm cfg80211 btmrvl_sdio btmrvl bluetooth s5p_mfc 
exynos_gsc v4l2_mem2mem videob
CPU: 0 PID: 1777 Comm: rtcwake Not tainted 
5.10.0-rc6-next-20201207-00001-g49a0dc04c46d-dirty #9902
Hardware name: Samsung Exynos (Flattened Device Tree)
[<c0111718>] (unwind_backtrace) from [<c010d050>] (show_stack+0x10/0x14)
[<c010d050>] (show_stack) from [<c0b32810>] (dump_stack+0xb4/0xd4)
[<c0b32810>] (dump_stack) from [<c0126e24>] (__warn+0xd8/0x11c)
[<c0126e24>] (__warn) from [<c0126f18>] (warn_slowpath_fmt+0xb0/0xb8)
[<c0126f18>] (warn_slowpath_fmt) from [<c07fa2fc>] 
(input_device_enabled+0x68/0x6c)
[<c07fa2fc>] (input_device_enabled) from [<c080a0f8>] 
(cyapa_gen3_set_power_mode+0x128/0x1cc)
[<c080a0f8>] (cyapa_gen3_set_power_mode) from [<c0807894>] 
(cyapa_suspend+0x74/0x114)
[<c0807894>] (cyapa_suspend) from [<c06ae924>] (dpm_run_callback+0xb0/0x3c8)
[<c06ae924>] (dpm_run_callback) from [<c06aefe4>] 
(__device_suspend+0x104/0x784)
[<c06aefe4>] (__device_suspend) from [<c06b2994>] (dpm_suspend+0x184/0x540)
[<c06b2994>] (dpm_suspend) from [<c06b369c>] (dpm_suspend_start+0x98/0xa0)
[<c06b369c>] (dpm_suspend_start) from [<c01a0a10>] 
(suspend_devices_and_enter+0xec/0xbd4)
[<c01a0a10>] (suspend_devices_and_enter) from [<c01a180c>] 
(pm_suspend+0x314/0x42c)
[<c01a180c>] (pm_suspend) from [<c019f6f8>] (state_store+0x6c/0xc8)
[<c019f6f8>] (state_store) from [<c0387b04>] (kernfs_fop_write+0x10c/0x228)
[<c0387b04>] (kernfs_fop_write) from [<c02dbd48>] (vfs_write+0xc8/0x530)
[<c02dbd48>] (vfs_write) from [<c02dc2ec>] (ksys_write+0x60/0xd8)
[<c02dc2ec>] (ksys_write) from [<c0100060>] (ret_fast_syscall+0x0/0x2c)
Exception stack(0xc45bffa8 to 0xc45bfff0)
...
irq event stamp: 14101
hardirqs last  enabled at (14109): [<c01a567c>] vprintk_emit+0x2d8/0x32c
hardirqs last disabled at (14116): [<c01a5640>] vprintk_emit+0x29c/0x32c
softirqs last  enabled at (13264): [<c01017a8>] __do_softirq+0x528/0x684
softirqs last disabled at (13253): [<c01304c4>] irq_exit+0x1ec/0x1f8
---[ end trace 6687a21e6b7e94a9 ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1777 at drivers/input/input.c:2230 
input_device_enabled+0x68/0x6c
Modules linked in: cmac bnep mwifiex_sdio mwifiex sha256_generic 
libsha256 sha256_arm cfg80211 btmrvl_sdio btmrvl bluetooth s5p_mfc 
exynos_gsc v4l2_mem2mem videob
CPU: 1 PID: 1777 Comm: rtcwake Tainted: G        W 
5.10.0-rc6-next-20201207-00001-g49a0dc04c46d-dirty #9902
Hardware name: Samsung Exynos (Flattened Device Tree)
[<c0111718>] (unwind_backtrace) from [<c010d050>] (show_stack+0x10/0x14)
[<c010d050>] (show_stack) from [<c0b32810>] (dump_stack+0xb4/0xd4)
[<c0b32810>] (dump_stack) from [<c0126e24>] (__warn+0xd8/0x11c)
[<c0126e24>] (__warn) from [<c0126f18>] (warn_slowpath_fmt+0xb0/0xb8)
[<c0126f18>] (warn_slowpath_fmt) from [<c07fa2fc>] 
(input_device_enabled+0x68/0x6c)
[<c07fa2fc>] (input_device_enabled) from [<c080a0f8>] 
(cyapa_gen3_set_power_mode+0x128/0x1cc)
[<c080a0f8>] (cyapa_gen3_set_power_mode) from [<c08088b4>] 
(cyapa_reinitialize+0xcc/0x154)
[<c08088b4>] (cyapa_reinitialize) from [<c0808984>] (cyapa_resume+0x48/0x98)
[<c0808984>] (cyapa_resume) from [<c06ae924>] (dpm_run_callback+0xb0/0x3c8)
[<c06ae924>] (dpm_run_callback) from [<c06aecf8>] (device_resume+0xbc/0x260)
[<c06aecf8>] (device_resume) from [<c06b10d8>] (dpm_resume+0x14c/0x51c)
[<c06b10d8>] (dpm_resume) from [<c06b1cac>] (dpm_resume_end+0xc/0x18)
[<c06b1cac>] (dpm_resume_end) from [<c01a0ad8>] 
(suspend_devices_and_enter+0x1b4/0xbd4)
[<c01a0ad8>] (suspend_devices_and_enter) from [<c01a180c>] 
(pm_suspend+0x314/0x42c)
[<c01a180c>] (pm_suspend) from [<c019f6f8>] (state_store+0x6c/0xc8)
[<c019f6f8>] (state_store) from [<c0387b04>] (kernfs_fop_write+0x10c/0x228)
[<c0387b04>] (kernfs_fop_write) from [<c02dbd48>] (vfs_write+0xc8/0x530)
[<c02dbd48>] (vfs_write) from [<c02dc2ec>] (ksys_write+0x60/0xd8)
[<c02dc2ec>] (ksys_write) from [<c0100060>] (ret_fast_syscall+0x0/0x2c)
Exception stack(0xc45bffa8 to 0xc45bfff0)
...
irq event stamp: 55479
hardirqs last  enabled at (55487): [<c01a567c>] vprintk_emit+0x2d8/0x32c
hardirqs last disabled at (55494): [<c01a5640>] vprintk_emit+0x29c/0x32c
softirqs last  enabled at (53552): [<c01017a8>] __do_softirq+0x528/0x684
softirqs last disabled at (53541): [<c01304c4>] irq_exit+0x1ec/0x1f8
---[ end trace 6687a21e6b7e94aa ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1777 at drivers/input/input.c:2230 
input_device_enabled+0x68/0x6c
Modules linked in: cmac bnep mwifiex_sdio mwifiex sha256_generic 
libsha256 sha256_arm cfg80211 btmrvl_sdio btmrvl bluetooth s5p_mfc 
exynos_gsc v4l2_mem2mem videob
CPU: 1 PID: 1777 Comm: rtcwake Tainted: G        W 
5.10.0-rc6-next-20201207-00001-g49a0dc04c46d-dirty #9902
Hardware name: Samsung Exynos (Flattened Device Tree)
[<c0111718>] (unwind_backtrace) from [<c010d050>] (show_stack+0x10/0x14)
[<c010d050>] (show_stack) from [<c0b32810>] (dump_stack+0xb4/0xd4)
[<c0b32810>] (dump_stack) from [<c0126e24>] (__warn+0xd8/0x11c)
[<c0126e24>] (__warn) from [<c0126f18>] (warn_slowpath_fmt+0xb0/0xb8)
[<c0126f18>] (warn_slowpath_fmt) from [<c07fa2fc>] 
(input_device_enabled+0x68/0x6c)
[<c07fa2fc>] (input_device_enabled) from [<c0808834>] 
(cyapa_reinitialize+0x4c/0x154)
[<c0808834>] (cyapa_reinitialize) from [<c0808984>] (cyapa_resume+0x48/0x98)
[<c0808984>] (cyapa_resume) from [<c06ae924>] (dpm_run_callback+0xb0/0x3c8)
[<c06ae924>] (dpm_run_callback) from [<c06aecf8>] (device_resume+0xbc/0x260)
[<c06aecf8>] (device_resume) from [<c06b10d8>] (dpm_resume+0x14c/0x51c)
[<c06b10d8>] (dpm_resume) from [<c06b1cac>] (dpm_resume_end+0xc/0x18)
[<c06b1cac>] (dpm_resume_end) from [<c01a0ad8>] 
(suspend_devices_and_enter+0x1b4/0xbd4)
[<c01a0ad8>] (suspend_devices_and_enter) from [<c01a180c>] 
(pm_suspend+0x314/0x42c)
[<c01a180c>] (pm_suspend) from [<c019f6f8>] (state_store+0x6c/0xc8)
[<c019f6f8>] (state_store) from [<c0387b04>] (kernfs_fop_write+0x10c/0x228)
[<c0387b04>] (kernfs_fop_write) from [<c02dbd48>] (vfs_write+0xc8/0x530)
[<c02dbd48>] (vfs_write) from [<c02dc2ec>] (ksys_write+0x60/0xd8)
[<c02dc2ec>] (ksys_write) from [<c0100060>] (ret_fast_syscall+0x0/0x2c)
Exception stack(0xc45bffa8 to 0xc45bfff0)
...
irq event stamp: 55829
hardirqs last  enabled at (55837): [<c01a567c>] vprintk_emit+0x2d8/0x32c
hardirqs last disabled at (55844): [<c01a5640>] vprintk_emit+0x29c/0x32c
softirqs last  enabled at (53552): [<c01017a8>] __do_softirq+0x528/0x684
softirqs last disabled at (53541): [<c01304c4>] irq_exit+0x1ec/0x1f8
---[ end trace 6687a21e6b7e94ab ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1777 at drivers/input/input.c:2230 
input_device_enabled+0x68/0x6c
Modules linked in: cmac bnep mwifiex_sdio mwifiex sha256_generic 
libsha256 sha256_arm cfg80211 btmrvl_sdio btmrvl bluetooth s5p_mfc 
exynos_gsc v4l2_mem2mem videob
CPU: 1 PID: 1777 Comm: rtcwake Tainted: G        W 
5.10.0-rc6-next-20201207-00001-g49a0dc04c46d-dirty #9902
Hardware name: Samsung Exynos (Flattened Device Tree)
[<c0111718>] (unwind_backtrace) from [<c010d050>] (show_stack+0x10/0x14)
[<c010d050>] (show_stack) from [<c0b32810>] (dump_stack+0xb4/0xd4)
[<c0b32810>] (dump_stack) from [<c0126e24>] (__warn+0xd8/0x11c)
[<c0126e24>] (__warn) from [<c0126f18>] (warn_slowpath_fmt+0xb0/0xb8)
[<c0126f18>] (warn_slowpath_fmt) from [<c07fa2fc>] 
(input_device_enabled+0x68/0x6c)
[<c07fa2fc>] (input_device_enabled) from [<c080a0f8>] 
(cyapa_gen3_set_power_mode+0x128/0x1cc)
[<c080a0f8>] (cyapa_gen3_set_power_mode) from [<c0808890>] 
(cyapa_reinitialize+0xa8/0x154)
[<c0808890>] (cyapa_reinitialize) from [<c0808984>] (cyapa_resume+0x48/0x98)
[<c0808984>] (cyapa_resume) from [<c06ae924>] (dpm_run_callback+0xb0/0x3c8)
[<c06ae924>] (dpm_run_callback) from [<c06aecf8>] (device_resume+0xbc/0x260)
[<c06aecf8>] (device_resume) from [<c06b10d8>] (dpm_resume+0x14c/0x51c)
[<c06b10d8>] (dpm_resume) from [<c06b1cac>] (dpm_resume_end+0xc/0x18)
[<c06b1cac>] (dpm_resume_end) from [<c01a0ad8>] 
(suspend_devices_and_enter+0x1b4/0xbd4)
[<c01a0ad8>] (suspend_devices_and_enter) from [<c01a180c>] 
(pm_suspend+0x314/0x42c)
[<c01a180c>] (pm_suspend) from [<c019f6f8>] (state_store+0x6c/0xc8)
[<c019f6f8>] (state_store) from [<c0387b04>] (kernfs_fop_write+0x10c/0x228)
[<c0387b04>] (kernfs_fop_write) from [<c02dbd48>] (vfs_write+0xc8/0x530)
[<c02dbd48>] (vfs_write) from [<c02dc2ec>] (ksys_write+0x60/0xd8)
[<c02dc2ec>] (ksys_write) from [<c0100060>] (ret_fast_syscall+0x0/0x2c)
Exception stack(0xc45bffa8 to 0xc45bfff0)
...
irq event stamp: 56143
hardirqs last  enabled at (56151): [<c01a567c>] vprintk_emit+0x2d8/0x32c
hardirqs last disabled at (56158): [<c01a5640>] vprintk_emit+0x29c/0x32c
softirqs last  enabled at (53552): [<c01017a8>] __do_softirq+0x528/0x684
softirqs last disabled at (53541): [<c01304c4>] irq_exit+0x1ec/0x1f8
---[ end trace 6687a21e6b7e94ac ]---

Let me know how I can help debugging this issue.

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland