On Friday, June 3, 2016 5:57:31 PM CEST Andre Przywara wrote:
When the sun4i DRM driver is compiled with LPAE enabled, dma_addr_t turns into a 64-bit type, which causes warnings with some debug printks: ================= In file included from drivers/gpu/drm/sun4i/sun4i_backend.c:13:: drivers/gpu/drm/sun4i/sun4i_backend.c: In function 'sun4i_backend_update_layer_buffer': drivers/gpu/drm/sun4i/sun4i_backend.c:193:19: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=] DRM_DEBUG_DRIVER("Using GEM @ 0x%x\n", gem->paddr); ^ include/drm/drmP.h:207:34: note: in definition of macro 'DRM_DEBUG_DRIVER' drm_ut_debug_printk(__func__, fmt, ##args); \ .....
Use the proper printk format specifier [1] for dma_addr_t which takes care of those differences.
Signed-off-by: Andre Przywara andre.przywara@arm.com
I submitted the same patch a month ago, and it's already in linux-next, I assume it will show up in mainline soon.
arnd