d0952ce316
When building with clang:
drivers/gpu/drm/mediatek/mtk_drm_gem.c:255:10: error: incompatible integer to pointer conversion returning 'int' from a function with result type 'void *' [-Wint-conversion]
255 | return -ENOMEM;
| ^~~~~~~
1 error generated.
GCC reports the same issue as a warning, rather than an error.
Prior to commit 7e542ff8b463 ("drm/mediatek: Use struct dma_buf_map in
GEM vmap ops"), this function returned a pointer rather than an integer.
This function is indirectly called in drm_gem_vmap(), which treats NULL
as -ENOMEM through an error pointer. Return NULL in this block to
resolve the warning but keep the same end result.
Fixes: 43f561e809aa ("drm/mediatek: Fix potential memory leak if vmap() fail")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>