[PATCH 2/2] drm/amd: Avoid using x86-specific _BITOPS_LONG_SHIFT

[Felix Kuehling]

Signed-off-by: Felix Kuehling <felix.kuehl...@amd.com>
---
 drivers/gpu/drm/amd/include/linux/chash.h | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/include/linux/chash.h 
b/drivers/gpu/drm/amd/include/linux/chash.h
index c89b92b..6dc1599 100644
--- a/drivers/gpu/drm/amd/include/linux/chash.h
+++ b/drivers/gpu/drm/amd/include/linux/chash.h
@@ -27,7 +27,15 @@
 #include <linux/types.h>
 #include <linux/hash.h>
 #include <linux/bug.h>
-#include <linux/bitops.h>
+#include <asm/bitsperlong.h>
+
+#if BITS_PER_LONG == 32
+# define _CHASH_LONG_SHIFT 5
+#elif BITS_PER_LONG == 64
+# define _CHASH_LONG_SHIFT 6
+#else
+# error "Unexpected BITS_PER_LONG"
+#endif
 
 struct __chash_table {
        u8 bits;
@@ -283,31 +291,31 @@ struct chash_iter {
 static inline bool chash_iter_is_valid(const struct chash_iter iter)
 {
        BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
-       return !!(iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &
+       return !!(iter.table->valid_bitmap[iter.slot >> _CHASH_LONG_SHIFT] &
                  iter.mask);
 }
 static inline bool chash_iter_is_empty(const struct chash_iter iter)
 {
        BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
-       return !(iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &
+       return !(iter.table->occup_bitmap[iter.slot >> _CHASH_LONG_SHIFT] &
                 iter.mask);
 }
 
 static inline void chash_iter_set_valid(const struct chash_iter iter)
 {
        BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
-       iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] |= iter.mask;
-       iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] |= iter.mask;
+       iter.table->valid_bitmap[iter.slot >> _CHASH_LONG_SHIFT] |= iter.mask;
+       iter.table->occup_bitmap[iter.slot >> _CHASH_LONG_SHIFT] |= iter.mask;
 }
 static inline void chash_iter_set_invalid(const struct chash_iter iter)
 {
        BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
-       iter.table->valid_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &= ~iter.mask;
+       iter.table->valid_bitmap[iter.slot >> _CHASH_LONG_SHIFT] &= ~iter.mask;
 }
 static inline void chash_iter_set_empty(const struct chash_iter iter)
 {
        BUG_ON((unsigned)iter.slot >= (1 << iter.table->bits));
-       iter.table->occup_bitmap[iter.slot >> _BITOPS_LONG_SHIFT] &= ~iter.mask;
+       iter.table->occup_bitmap[iter.slot >> _CHASH_LONG_SHIFT] &= ~iter.mask;
 }
 
 static inline u32 chash_iter_key32(const struct chash_iter iter)
-- 
2.7.4

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