diff mbox series

[4.19,004/140] media: venus: remove invalid compat_ioctl32 handler

Message ID 20191216174748.998709817@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Dec. 16, 2019, 5:47 p.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>


commit 4adc0423de92cf850d1ef5c0e7cb28fd7a38219e upstream.

v4l2_compat_ioctl32() is the function that calls into
v4l2_file_operations->compat_ioctl32(), so setting that back to the same
function leads to a trivial endless loop, followed by a kernel
stack overrun.

Remove the incorrect assignment.

Cc: stable@vger.kernel.org
Fixes: 7472c1c69138 ("[media] media: venus: vdec: add video decoder files")
Fixes: aaaa93eda64b ("[media] media: venus: venc: add video encoder files")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>


---
 drivers/media/platform/qcom/venus/vdec.c |    3 ---
 drivers/media/platform/qcom/venus/venc.c |    3 ---
 2 files changed, 6 deletions(-)
diff mbox series

Patch

--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -1115,9 +1115,6 @@  static const struct v4l2_file_operations
 	.unlocked_ioctl = video_ioctl2,
 	.poll = v4l2_m2m_fop_poll,
 	.mmap = v4l2_m2m_fop_mmap,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl32 = v4l2_compat_ioctl32,
-#endif
 };
 
 static int vdec_probe(struct platform_device *pdev)
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -1220,9 +1220,6 @@  static const struct v4l2_file_operations
 	.unlocked_ioctl = video_ioctl2,
 	.poll = v4l2_m2m_fop_poll,
 	.mmap = v4l2_m2m_fop_mmap,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl32 = v4l2_compat_ioctl32,
-#endif
 };
 
 static int venc_probe(struct platform_device *pdev)