Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8f9f96...
Commit: 8f9f963e5d9853dbc5fa5091f15ae64f423d3d89
Parent: f8d2dc39389d6ccc0def290dc4b7eb71d68645a2
Author: Jarod Wilson <jwilson@redhat.com>
AuthorDate: Wed Jan 23 16:05:45 2008 -0500
Committer: Stefan Richter <stefanr@s5r6.in-berlin.de>
CommitDate: Wed Jan 30 22:22:28 2008 +0100
firewire: replace subtraction with bitwise and
Replace an unnecessary subtraction with a bitwise AND when determining the
value of ext_tcode in fw_fill_transaction() to save a cpu cycle or two in a
somewhat critical path.
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---
drivers/firewire/fw-transaction.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c
index 8018c3b..7fcc59d 100644
--- a/drivers/firewire/fw-transaction.c
+++ b/drivers/firewire/fw-transaction.c
@@ -153,7 +153,7 @@ fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
int ext_tcode;
if (tcode > 0x10) {
- ext_tcode = tcode - 0x10;
+ ext_tcode = tcode & ~0x10;
tcode = TCODE_LOCK_REQUEST;
} else
ext_tcode = 0;
-
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