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linux/drivers/media/rc
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Sean Young 7a19bd6fe2 media: rc: ensure lirc is initialized before registering input device 
commit 080d89f522 upstream.

Once rc_open is called on the input device, lirc events can be delivered.
Ensure lirc is ready to do so else we might get this:

Registered IR keymap rc-hauppauge
rc rc0: Hauppauge WinTV PVR-350 as
/devices/pci0000:00/0000:00:1e.0/0000:04:00.0/i2c-0/0-0018/rc/rc0
input: Hauppauge WinTV PVR-350 as
/devices/pci0000:00/0000:00:1e.0/0000:04:00.0/i2c-0/0-0018/rc/rc0/input9
BUG: kernel NULL pointer dereference, address: 0000000000000038
PGD 0 P4D 0
Oops: 0000 [#1] SMP PTI
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.11-300.fc31.x86_64 #1
Hardware name:  /DG43NB, BIOS NBG4310H.86A.0096.2009.0903.1845 09/03/2009
Workqueue: events ir_work [ir_kbd_i2c]
RIP: 0010:ir_lirc_scancode_event+0x3d/0xb0
Code: a6 b4 07 00 00 49 81 c6 b8 07 00 00 55 53 e8 ba a7 9d ff 4c 89
e7 49 89 45 00 e8 5e 7a 25 00 49 8b 1e 48 89 c5 4c 39 f3 74 58 <8b> 43
38 8b 53 40 89 c1 2b 4b 3c 39 ca 72 41 21 d0 49 8b 7d 00 49
RSP: 0018:ffffaae2000b3d88 EFLAGS: 00010017
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000019
RDX: 0000000000000001 RSI: 006e801b1f26ce6a RDI: ffff9e39797c37b4
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: ffff9e39797c37b4
R13: ffffaae2000b3db8 R14: ffff9e39797c37b8 R15: ffff9e39797c33d8
FS:  0000000000000000(0000) GS:ffff9e397b680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000038 CR3: 0000000035844000 CR4: 00000000000006e0
Call Trace:
ir_do_keydown+0x8e/0x2b0
rc_keydown+0x52/0xc0
ir_work+0xb8/0x130 [ir_kbd_i2c]
process_one_work+0x19d/0x340
worker_thread+0x50/0x3b0
kthread+0xfb/0x130
? process_one_work+0x340/0x340
? kthread_park+0x80/0x80
ret_from_fork+0x35/0x40
Modules linked in: rc_hauppauge tuner msp3400 saa7127 saa7115 ivtv(+)
tveeprom cx2341x v4l2_common videodev mc i2c_algo_bit ir_kbd_i2c
ip_tables firewire_ohci e1000e serio_raw firewire_core ata_generic
crc_itu_t pata_acpi pata_jmicron fuse
CR2: 0000000000000038
---[ end trace c67c2697a99fa74b ]---
RIP: 0010:ir_lirc_scancode_event+0x3d/0xb0
Code: a6 b4 07 00 00 49 81 c6 b8 07 00 00 55 53 e8 ba a7 9d ff 4c 89
e7 49 89 45 00 e8 5e 7a 25 00 49 8b 1e 48 89 c5 4c 39 f3 74 58 <8b> 43
38 8b 53 40 89 c1 2b 4b 3c 39 ca 72 41 21 d0 49 8b 7d 00 49
RSP: 0018:ffffaae2000b3d88 EFLAGS: 00010017
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000019
RDX: 0000000000000001 RSI: 006e801b1f26ce6a RDI: ffff9e39797c37b4
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: ffff9e39797c37b4
R13: ffffaae2000b3db8 R14: ffff9e39797c37b8 R15: ffff9e39797c33d8
FS:  0000000000000000(0000) GS:ffff9e397b680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000038 CR3: 0000000035844000 CR4: 00000000000006e0
rc rc0: lirc_dev: driver ir_kbd_i2c registered at minor = 0, scancode
receiver, no transmitter
tuner-simple 0-0061: creating new instance
tuner-simple 0-0061: type set to 2 (Philips NTSC (FI1236,FM1236 and
compatibles))
ivtv0: Registered device video0 for encoder MPG (4096 kB)
ivtv0: Registered device video32 for encoder YUV (2048 kB)
ivtv0: Registered device vbi0 for encoder VBI (1024 kB)
ivtv0: Registered device video24 for encoder PCM (320 kB)
ivtv0: Registered device radio0 for encoder radio
ivtv0: Registered device video16 for decoder MPG (1024 kB)
ivtv0: Registered device vbi8 for decoder VBI (64 kB)
ivtv0: Registered device vbi16 for decoder VOUT
ivtv0: Registered device video48 for decoder YUV (1024 kB)

Cc: stable@vger.kernel.org
Tested-by: Nick French <nickfrench@gmail.com>
Reported-by: Nick French <nickfrench@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2020-02-11 04:35:36 -08:00
..
img-ir media: Remove dev_err() usage after platform_get_irq() 2019-08-07 17:08:33 -03:00
keymaps media: rc: add keymap for HardKernel ODROID remote 2019-08-21 18:39:54 -03:00
Kconfig
…
Makefile
…
ati_remote.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
bpf-lirc.c bpf: media: properly use bpf_prog_array api 2019-05-29 15:17:35 +02:00
ene_ir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ene_ir.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
fintek-cir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
fintek-cir.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
gpio-ir-recv.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
gpio-ir-tx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 122 2019-05-24 17:39:03 +02:00
igorplugusb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
iguanair.c media: iguanair: fix endpoint sanity check 2020-02-11 04:35:36 -08:00
imon.c media: imon: invalid dereference in imon_touch_event 2019-11-29 10:10:17 +01:00
imon_raw.c media: imon_raw: prevent "nonsensical timing event of duration 0" 2019-08-14 05:06:04 -03:00
ir-hix5hd2.c media: Remove dev_err() usage after platform_get_irq() 2019-08-07 17:08:33 -03:00
ir-imon-decoder.c
…
ir-jvc-decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
ir-mce_kbd-decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
ir-nec-decoder.c
…
ir-rc5-decoder.c
…
ir-rc6-decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
ir-rcmm-decoder.c
…
ir-rx51.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ir-sanyo-decoder.c
…
ir-sharp-decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
ir-sony-decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
ir-spi.c
…
ir-xmp-decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
ite-cir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ite-cir.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
lirc_dev.c media: rc: IR signal for Panasonic air conditioner too long 2019-06-21 15:33:48 -04:00
mceusb.c media: mceusb: fix out of bounds read in MCE receiver buffer 2019-11-29 10:10:18 +01:00
meson-ir.c media: Remove dev_err() usage after platform_get_irq() 2019-08-07 17:08:33 -03:00
mtk-cir.c media: Remove dev_err() usage after platform_get_irq() 2019-08-07 17:08:33 -03:00
nuvoton-cir.c
…
nuvoton-cir.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
pwm-ir-tx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 122 2019-05-24 17:39:03 +02:00
rc-core-priv.h
…
rc-ir-raw.c
…
rc-loopback.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
rc-main.c media: rc: ensure lirc is initialized before registering input device 2020-02-11 04:35:36 -08:00
redrat3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
serial_ir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
sir_ir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
st_rc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
streamzap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
sunxi-cir.c media: Remove dev_err() usage after platform_get_irq() 2019-08-07 17:08:33 -03:00
tango-ir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ttusbir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
winbond-cir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
xbox_remote.c
…
zx-irdec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00