[PATCH] drm: vmwgfx: include linux/highmem.h

[Arnd Bergmann]

In order to call kmap_atomic() etc, we need to include linux/highmem.h:

drivers/gpu/drm/vmwgfx/vmwgfx_blit.c: In function 'vmw_bo_cpu_blit_line':
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:377:4: error: implicit declaration of function 'kunmap_atomic'; did you mean 'in_atomic'? [-Werror=implicit-function-declaration]
  377 |    kunmap_atomic(d->src_addr);
      |    ^~~~~~~~~~~~~
      |    in_atomic
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:391:5: error: implicit declaration of function 'kmap_atomic_prot' [-Werror=implicit-function-declaration]
  391 |     kmap_atomic_prot(d->dst_pages[dst_page],
      |     ^~~~~~~~~~~~~~~~
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:390:16: warning: assignment to 'u8 *' {aka 'unsigned char *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
  390 |    d->dst_addr =
      |                ^
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:403:16: warning: assignment to 'u8 *' {aka 'unsigned char *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
  403 |    d->src_addr =
      |                ^

Fixes: 46385a895322 ("drm: remove drm specific kmap_atomic code")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
index 94d456a1d1a9..1629427d5734 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
@@ -27,6 +27,7 @@
  **************************************************************************/
 
 #include "vmwgfx_drv.h"
+#include <linux/highmem.h>
 
 /*
  * Template that implements find_first_diff() for a generic
-- 
2.26.0