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kernel.h: Silence sparse warning in lower_32_bits

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I keep getting sparse warnings in crypto such as:

  CHECK   drivers/crypto/ccree/cc_hash.c
   drivers/crypto/ccree/cc_hash.c:49:9: warning: cast truncates bits from constant value (47b5481dbefa4fa4 becomes befa4fa4)
   drivers/crypto/ccree/cc_hash.c:49:26: warning: cast truncates bits from constant value (db0c2e0d64f98fa7 becomes 64f98fa7)
   [.. many more ..]

This patch removes the warning by adding a mask to keep sparse
happy.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Herbert Xu 2020-08-28 17:11:25 +10:00 committed by Linus Torvalds
parent e309428590
commit ef91bb196b
1 changed files with 1 additions and 1 deletions
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2
include/linux/kernel.h
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@ -186,7 +186,7 @@
* lower_32_bits - return bits 0-31 of a number
* @n: the number we're accessing
*/
#define lower_32_bits(n) ((u32)(n))
#define lower_32_bits(n) ((u32)((n) & 0xffffffff))
struct completion;
struct pt_regs;