media: pci: ivtv: Add missing check after DMA map

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commit 1069a4fe63 upstream.

The DMA map functions can fail and should be tested for errors.
If the mapping fails, free blanking_ptr and set it to 0.  As 0 is a
valid DMA address, use blanking_ptr to test if the DMA address
is set.

Fixes: 1a0adaf37c ("V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoder")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Thomas Fourier 2025-07-16 15:26:30 +02:00 • committed by Greg Kroah-Hartman

parent 7a9994d46c

commit 2f6aa32aaf

2 changed files with 8 additions and 2 deletions

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2

drivers/media/pci/ivtv/ivtv-irq.c

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8

drivers/media/pci/ivtv/ivtv-yuv.c

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