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authorSean Paul <seanpaul@chromium.org>2019-10-23 11:14:11 -0400
committerSean Paul <seanpaul@chromium.org>2019-10-23 11:14:11 -0400
commit44bf67f32a6803339ac1ba721b158c3e2272cabe (patch)
tree1ed93503a4a1d20005b85df91bd81e5f5982f348 /include/linux/bitops.h
parenta96bf3cbd7b8557f5c5c7938e5f8926ea39d55e9 (diff)
parent2e79e22e092acd55da0b2db066e4826d7d152c41 (diff)
Merge drm/drm-next into drm-misc-next
Parroting Daniel's backmerge justification from 2e79e22e092acd55da0b2db066e4826d7d152c41: Thierry needs fd70c7755bf0 ("drm/bridge: tc358767: fix max_tu_symbol value") to be able to merge his dp_link patch series. Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'include/linux/bitops.h')
-rw-r--r--include/linux/bitops.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index cf074bce3eb3..c94a9ff9f082 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -4,6 +4,13 @@
#include <asm/types.h>
#include <linux/bits.h>
+/* Set bits in the first 'n' bytes when loaded from memory */
+#ifdef __LITTLE_ENDIAN
+# define aligned_byte_mask(n) ((1UL << 8*(n))-1)
+#else
+# define aligned_byte_mask(n) (~0xffUL << (BITS_PER_LONG - 8 - 8*(n)))
+#endif
+
#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE)
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long))