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cifs: Remove redundant multiplex identifier check from check_smb_hdr() 

The only call site for check_smb_header() assigns 'mid' from the SMB
packet, which is then checked again in check_smb_header(). This seems
like redundant redundancy.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Tim Gardner <timg@tpi.com>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Tim Gardner 2013-10-16 09:09:49 -06:00 committed by Steve French
parent 34f626406c
commit 944d6f1a5b
1 changed files with 2 additions and 10 deletions
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12
fs/cifs/misc.c
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@ -278,7 +278,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
}
static int
check_smb_hdr(struct smb_hdr *smb, __u16 mid)
check_smb_hdr(struct smb_hdr *smb)
{
/* does it have the right SMB "signature" ? */
if (*(__le32 *) smb->Protocol != cpu_to_le32(0x424d53ff)) {
@ -287,13 +287,6 @@ check_smb_hdr(struct smb_hdr *smb, __u16 mid)
return 1;
}
/* Make sure that message ids match */
if (mid != smb->Mid) {
cifs_dbg(VFS, "Mids do not match. received=%u expected=%u\n",
smb->Mid, mid);
return 1;
}
/* if it's a response then accept */
if (smb->Flags & SMBFLG_RESPONSE)
return 0;
@ -310,7 +303,6 @@ int
checkSMB(char *buf, unsigned int total_read)
{
struct smb_hdr *smb = (struct smb_hdr *)buf;
__u16 mid = smb->Mid;
__u32 rfclen = be32_to_cpu(smb->smb_buf_length);
__u32 clc_len; /* calculated length */
cifs_dbg(FYI, "checkSMB Length: 0x%x, smb_buf_length: 0x%x\n",
@ -348,7 +340,7 @@ checkSMB(char *buf, unsigned int total_read)
}
/* otherwise, there is enough to get to the BCC */
if (check_smb_hdr(smb, mid))
if (check_smb_hdr(smb))
return -EIO;
clc_len = smbCalcSize(smb);