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authorJeff Layton <jlayton@redhat.com>2011-03-31 17:32:54 -0400
committerSteve French <sfrench@us.ibm.com>2011-04-12 00:56:46 +0000
commitc0c7b905e911a1f1faf515a24e849d4ffcdd0a8a (patch)
tree8449fe54d28dc94b78ec43d48c99300c023f2de0 /fs
parent2b6c26a0a62cc0bab0ad487533d5581d7c293fef (diff)
cifs: clean up length checks in check2ndT2
Thus spake David Howells: The code that follows this: remaining = total_data_size - data_in_this_rsp; if (remaining == 0) return 0; else if (remaining < 0) { generates better code if you drop the 'remaining' variable and compare the values directly. Clean it up per his recommendation... Reported-and-acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/connect.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 5eacb89d4a4f..709fd9d9b78f 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -248,24 +248,24 @@ static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize)
total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
- remaining = total_data_size - data_in_this_rsp;
-
- if (remaining == 0)
+ if (total_data_size == data_in_this_rsp)
return 0;
- else if (remaining < 0) {
+ else if (total_data_size < data_in_this_rsp) {
cFYI(1, "total data %d smaller than data in frame %d",
total_data_size, data_in_this_rsp);
return -EINVAL;
- } else {
- cFYI(1, "missing %d bytes from transact2, check next response",
- remaining);
- if (total_data_size > maxBufSize) {
- cERROR(1, "TotalDataSize %d is over maximum buffer %d",
- total_data_size, maxBufSize);
- return -EINVAL;
- }
- return remaining;
}
+
+ remaining = total_data_size - data_in_this_rsp;
+
+ cFYI(1, "missing %d bytes from transact2, check next response",
+ remaining);
+ if (total_data_size > maxBufSize) {
+ cERROR(1, "TotalDataSize %d is over maximum buffer %d",
+ total_data_size, maxBufSize);
+ return -EINVAL;
+ }
+ return remaining;
}
static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)