aboutsummaryrefslogtreecommitdiff
path: root/hw/arm/pxa2xx_gpio.c
diff options
context:
space:
mode:
authorStefan Hajnoczi <stefanha@redhat.com>2015-03-23 15:29:26 +0000
committerKevin Wolf <kwolf@redhat.com>2015-04-28 15:36:08 +0200
commit786a4ea82ec9c87e3a895cf41081029b285a5fe5 (patch)
treefe42f1059c13ea9a27bc9515e5d440d3bb354773 /hw/arm/pxa2xx_gpio.c
parent5863d374a32c98a7adb4c5e49d62de3cdc16d2ea (diff)
Convert (ffs(val) - 1) to ctz32(val)
This commit was generated mechanically by coccinelle from the following semantic patch: @@ expression val; @@ - (ffs(val) - 1) + ctz32(val) The call sites have been audited to ensure the ffs(0) - 1 == -1 case never occurs (due to input validation, asserts, etc). Therefore we don't need to worry about the fact that ctz32(0) == 32. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1427124571-28598-5-git-send-email-stefanha@redhat.com Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/arm/pxa2xx_gpio.c')
-rw-r--r--hw/arm/pxa2xx_gpio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/arm/pxa2xx_gpio.c b/hw/arm/pxa2xx_gpio.c
index 354ccf1ea1..c89c8045c3 100644
--- a/hw/arm/pxa2xx_gpio.c
+++ b/hw/arm/pxa2xx_gpio.c
@@ -137,7 +137,7 @@ static void pxa2xx_gpio_handler_update(PXA2xxGPIOInfo *s) {
level = s->olevel[i] & s->dir[i];
for (diff = s->prev_level[i] ^ level; diff; diff ^= 1 << bit) {
- bit = ffs(diff) - 1;
+ bit = ctz32(diff);
line = bit + 32 * i;
qemu_set_irq(s->handler[line], (level >> bit) & 1);
}