kernel/linux.git/drivers/dma-buf, branch linux-4.20.y

udmabuf: set read/write flag when exporting

2018-11-16T07:50:53+00:00

Otherwise, mmap fails when done with PROT_WRITE. Suggested-by: Gurchetan Singh Signed-off-by: Gerd Hoffmann Reviewed-by: Gurchetan Singh Tested-by: Gurchetan Singh Link: http://patchwork.freedesktop.org/patch/msgid/20181114122029.16766-1-kraxel@redhat.com

udmabuf: fix error code in map_udmabuf()

2018-09-14T09:44:59+00:00

We accidentally forgot to set "ret" on this error path so it means we return NULL instead of an error pointer. The caller checks for NULL and changes it to an error pointer so it doesn't cause an issue at run time. Signed-off-by: Dan Carpenter Link: http://patchwork.freedesktop.org/patch/msgid/20180914065615.GA12043@mwanda Signed-off-by: Gerd Hoffmann

udmabuf: use sizeof(variable) instead of sizeof(type)

2018-09-12T06:21:33+00:00

Reported-by: Laurent Pinchart Signed-off-by: Gerd Hoffmann Reviewed-by: Laurent Pinchart Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-13-kraxel@redhat.com

udmabuf: drop WARN_ON() check.

2018-09-12T06:21:32+00:00

Reported-by: Laurent Pinchart Signed-off-by: Gerd Hoffmann Reviewed-by: Laurent Pinchart Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-12-kraxel@redhat.com

udmabuf: use ENOTTY for invalid ioctls

2018-09-12T06:21:32+00:00

Reported-by: Laurent Pinchart Signed-off-by: Gerd Hoffmann Reviewed-by: Laurent Pinchart Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-11-kraxel@redhat.com

udmabuf: use EBADFD in case we didn't got a memfd

2018-09-12T06:21:31+00:00

Reported-by: Laurent Pinchart Signed-off-by: Gerd Hoffmann Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-10-kraxel@redhat.com

udmabuf: improve udmabuf_create error handling

2018-09-12T06:21:31+00:00

udmabuf: rework limits

2018-09-12T06:21:30+00:00

Create variable for the list length limit. Serves as documentation, also allows to make it a module parameter if needed. Also add a total size limit. Signed-off-by: Gerd Hoffmann Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-8-kraxel@redhat.com

udmabuf: add MEMFD_CREATE dependency

2018-09-12T06:21:30+00:00

udmabuf builds without it, but if userspace can not create memfd handles in the first place it is rather pointless to include it, except for test builds. Signed-off-by: Gerd Hoffmann Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-7-kraxel@redhat.com

udmabuf: constify udmabuf_create args

2018-09-12T06:21:29+00:00