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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>
hifive-unleashed-5.1
Jarod Wilson 2008-01-23 16:05:45 -05:00 committed by Stefan Richter
parent f8d2dc3938
commit 8f9f963e5d
1 changed files with 1 additions and 1 deletions
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drivers/firewire/fw-transaction.c
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@ -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;