media: vidtv: add error checks

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Currently, there are not checks if something gets bad during
memory allocation: it will simply use NULL pointers and
crash.

Add error path at the logic which allocates memory for the
MPEG-TS generator code, propagating the errors up to the
vidtv_bridge. Now, if something wents bad, start_streaming
will return an error that userspace can detect:

	ERROR    DMX_SET_PES_FILTER failed (PID = 0x2000): 12 Cannot allocate memory

and the driver doesn't crash.

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

...

This commit is contained in:

Mauro Carvalho Chehab 2020-09-21 15:11:50 +02:00

parent 8922e3931d

commit 3be8037960

6 changed files with 289 additions and 67 deletions

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2

drivers/media/test-drivers/vidtv/vidtv_bridge.c

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137

drivers/media/test-drivers/vidtv/vidtv_channel.c

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4

drivers/media/test-drivers/vidtv/vidtv_channel.h

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103

drivers/media/test-drivers/vidtv/vidtv_mux.c

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109

drivers/media/test-drivers/vidtv/vidtv_psi.c

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19

drivers/media/test-drivers/vidtv/vidtv_s302m.c

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