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media: s5p-mfc: fix incorrect bus assignment in virtual child device

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[ Upstream commit 1e0d0a5fd3 ]

Virtual MFC codec's child devices must not be assigned to platform bus,
because they are allocated as raw 'struct device' and don't have the
corresponding 'platform' part. This fixes NULL pointer access revealed
recently by commit a66d972465 ("devres: Align data[] to
ARCH_KMALLOC_MINALIGN").

Fixes: c79667dd93 ("media: s5p-mfc: replace custom reserved memory handling code with generic one")

Reported-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by:  Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marek Szyprowski
2019-01-07 07:04:14 -05:00
committed by Greg Kroah-Hartman
parent 3ddc2a1007
commit 7821bcce20
1 changed files with 0 additions and 1 deletions
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drivers/media/platform/s5p-mfc/s5p_mfc.c
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@@ -1089,7 +1089,6 @@ static struct device *s5p_mfc_alloc_memdev(struct device *dev,
device_initialize(child);
dev_set_name(child, "%s:%s", dev_name(dev), name);
child->parent = dev;
child->bus = dev->bus;
child->coherent_dma_mask = dev->coherent_dma_mask;
child->dma_mask = dev->dma_mask;
child->release = s5p_mfc_memdev_release;