[PATCH] video: fbdev: fix use of 'dma_map_single'

DMA_TO_DEVICE synchronisation must be done after the last modification of the memory region by the software and before it is handed off to the device. Signed-off-by: Hui Tang --- drivers/video/fbdev/grvga.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/video

[PATCH] drm/msm/dpu: check for null return of devm_kzalloc() in dpu_writeback_init()

Because of the possilble failure of devm_kzalloc(), dpu_wb_conn might be NULL and will cause null pointer derefrence later. Therefore, it might be better to check it and directly return -ENOMEM. Fixes: 77b001acdcfe ("drm/msm/dpu: add the writeback connector layer") Signed-off-by