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ext4: remove dynamic array size in ext4_chksum()

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The ext4_checksum() inline function was using a dynamic array size,
which is not legal C.  (It is a gcc extension).

Remove it.

Cc: "Darrick J. Wong" <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2012-07-22 20:25:31 -04:00
parent 8a9918497b
commit 3108b54bce
1 changed files with 3 additions and 1 deletions
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4
fs/ext4/ext4.h
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@ -1667,10 +1667,12 @@ static inline u32 ext4_chksum(struct ext4_sb_info *sbi, u32 crc,
{ {
struct { struct {
struct shash_desc shash; struct shash_desc shash;
char ctx[crypto_shash_descsize(sbi->s_chksum_driver)]; char ctx[4];
} desc; } desc;
int err; int err;
BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver)!=sizeof(desc.ctx));
desc.shash.tfm = sbi->s_chksum_driver; desc.shash.tfm = sbi->s_chksum_driver;
desc.shash.flags = 0; desc.shash.flags = 0;
*(u32 *)desc.ctx = crc; *(u32 *)desc.ctx = crc;