From: Helen Koike helen.koike@collabora.com
[ Upstream commit ee1c71a8e1456ab53fe667281d855849edf26a4d ]
If the system has other devices being registered in the component framework, the compare function will be called with a device that doesn't belong to vimc. This device is not necessarily a platform_device, nor have a platform_data (which causes a NULL pointer dereference error) and if it does have a pdata, it is not necessarily type of struct vimc_platform_data. So casting to any of these types is wrong.
Instead of expecting a given pdev with a given pdata, just expect for the device it self. vimc-core is the one who creates them, we know in advance exactly which object to expect in the match.
Fixes: 4a29b7090749 ("[media] vimc: Subdevices as modules")
Signed-off-by: Helen Koike helen.koike@collabora.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Tested-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/vimc/vimc-core.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/media/platform/vimc/vimc-core.c b/drivers/media/platform/vimc/vimc-core.c index 27db8835c2410..8548fa93bcf65 100644 --- a/drivers/media/platform/vimc/vimc-core.c +++ b/drivers/media/platform/vimc/vimc-core.c @@ -243,10 +243,7 @@ static void vimc_comp_unbind(struct device *master)
static int vimc_comp_compare(struct device *comp, void *data) { - const struct platform_device *pdev = to_platform_device(comp); - const char *name = data; - - return !strcmp(pdev->dev.platform_data, name); + return comp == data; }
static struct component_match *vimc_add_subdevs(struct vimc_device *vimc) @@ -276,7 +273,7 @@ static struct component_match *vimc_add_subdevs(struct vimc_device *vimc) }
component_match_add(&vimc->pdev.dev, &match, vimc_comp_compare, - (void *)vimc->pipe_cfg->ents[i].name); + &vimc->subdevs[i]->dev); }
return match;