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authorNadav Amit <namit@vmware.com>2018-06-04 09:47:13 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-09 09:18:21 +0200
commit04d3e9c446e2caf80b19e0332e58cec0a2693f7f (patch)
parentc2a035d7822ac8d2870cd6dbaadc1ab407713b83 (diff)
media: uvcvideo: Fix uvc_alloc_entity() allocation alignment
commit 89dd34caf73e28018c58cd193751e41b1f8bdc56 upstream. The use of ALIGN() in uvc_alloc_entity() is incorrect, since the size of (entity->pads) is not a power of two. As a stop-gap, until a better solution is adapted, use roundup() instead. Found by a static assertion. Compile-tested only. Fixes: 4ffc2d89f38a ("uvcvideo: Register subdevices for each entity") Signed-off-by: Nadav Amit <namit@vmware.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Doug Anderson <dianders@chromium.org> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index c0176f5d8200..c2939d080997 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -903,7 +903,7 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
unsigned int size;
unsigned int i;
- extra_size = ALIGN(extra_size, sizeof(*entity->pads));
+ extra_size = roundup(extra_size, sizeof(*entity->pads));
num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1;
size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
+ num_inputs;