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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2015-03-23 15:29:26 +0000 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-04-28 15:36:08 +0200 |
| commit | 786a4ea82ec9c87e3a895cf41081029b285a5fe5 (patch) | |
| tree | fe42f1059c13ea9a27bc9515e5d440d3bb354773 /hw/acpi | |
| parent | 5863d374a32c98a7adb4c5e49d62de3cdc16d2ea (diff) | |
| download | qemu-786a4ea82ec9c87e3a895cf41081029b285a5fe5.zip | |
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/acpi')
| -rw-r--r-- | hw/acpi/pcihp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c index 612fec03ee..77e1126f8f 100644 --- a/hw/acpi/pcihp.c +++ b/hw/acpi/pcihp.c @@ -120,7 +120,7 @@ static bool acpi_pcihp_pc_no_hotplug(AcpiPciHpState *s, PCIDevice *dev) static void acpi_pcihp_eject_slot(AcpiPciHpState *s, unsigned bsel, unsigned slots) { BusChild *kid, *next; - int slot = ffs(slots) - 1; + int slot = ctz32(slots); PCIBus *bus = acpi_pcihp_find_hotplug_bus(s, bsel); if (!bus) { |