crypto: x86/crc32c - fix building with clang ias

The clang integrated assembler complains about movzxw:

arch/x86/crypto/crc32c-pcl-intel-asm_64.S:173:2: error: invalid instruction mnemonic 'movzxw'

It seems that movzwq is the mnemonic that it expects instead,
and this is what objdump prints when disassembling the file.

Fixes: 6a8ce1ef3940 ("crypto: crc32c - Optimize CRC32C calculation with PCLMULQDQ instruction")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
index d84c8bf..884dc76 100644 (file)
--- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
+++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
@@ -169,7 +169,7 @@ continue_block:
 
        ## branch into array
        lea     jump_table(%rip), %bufp
-       movzxw  (%bufp, %rax, 2), len
+       movzwq  (%bufp, %rax, 2), len
        lea     crc_array(%rip), %bufp
        lea     (%bufp, len, 1), %bufp
        JMP_NOSPEC bufp