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cifs: smb2 commands can not be negative, remove confusing check 

As Coverity points out le16_to_cpu(midEntry->Command) can not be
less than zero.

Detected by CoverityScan, CID#1438650 ("Macro compares unsigned to 0")

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
This commit is contained in:
Steve French 2018-11-14 01:37:39 -06:00
parent 0967e54579
commit f5942db5ef
1 changed files with 5 additions and 3 deletions
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8
fs/cifs/transport.c
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@ -126,9 +126,11 @@ DeleteMidQEntry(struct mid_q_entry *midEntry)
if ((slow_rsp_threshold != 0) &&
time_after(now, midEntry->when_alloc + (slow_rsp_threshold * HZ)) &&
(midEntry->command != command)) {
/* smb2slowcmd[NUMBER_OF_SMB2_COMMANDS] counts by command */
if ((le16_to_cpu(midEntry->command) < NUMBER_OF_SMB2_COMMANDS) &&
(le16_to_cpu(midEntry->command) >= 0))
/*
* smb2slowcmd[NUMBER_OF_SMB2_COMMANDS] counts by command
* NB: le16_to_cpu returns unsigned so can not be negative below
*/
if (le16_to_cpu(midEntry->command) < NUMBER_OF_SMB2_COMMANDS)
cifs_stats_inc(&midEntry->server->smb2slowcmd[le16_to_cpu(midEntry->command)]);
trace_smb3_slow_rsp(le16_to_cpu(midEntry->command),