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authorFinn Thain <fthain@telegraphics.com.au>2018-07-02 08:21:19 (GMT)
committerMichael Ellerman <mpe@ellerman.id.au>2018-07-31 09:56:43 (GMT)
commitb5c7cccaacdfa8d707da3e65970b15070f56df5e (patch)
treee3190148ddc2b8d1d6d645c3c0aaca82299a73d3 /drivers/macintosh
parentebd722275f9cfc6752e29d2412fa3816ca05764b (diff)
macintosh/via-pmu: Clean up interrupt statistics
Replace an open-coded ffs() with the function call. Simplify an if-else cascade using a switch statement. Correct a typo and an indentation issue. Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/via-pmu.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index a68e7a6..3da5d40 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1355,7 +1355,8 @@ pmu_resume(void)
static void
pmu_handle_data(unsigned char *data, int len)
{
- unsigned char ints, pirq;
+ unsigned char ints;
+ int idx;
int i = 0;
asleep = 0;
@@ -1377,25 +1378,24 @@ pmu_handle_data(unsigned char *data, int len)
ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
next:
-
if (ints == 0) {
if (i > pmu_irq_stats[10])
pmu_irq_stats[10] = i;
return;
}
-
- for (pirq = 0; pirq < 8; pirq++)
- if (ints & (1 << pirq))
- break;
- pmu_irq_stats[pirq]++;
i++;
- ints &= ~(1 << pirq);
+
+ idx = ffs(ints) - 1;
+ ints &= ~BIT(idx);
+
+ pmu_irq_stats[idx]++;
/* Note: for some reason, we get an interrupt with len=1,
* data[0]==0 after each normal ADB interrupt, at least
* on the Pismo. Still investigating... --BenH
*/
- if ((1 << pirq) & PMU_INT_ADB) {
+ switch (BIT(idx)) {
+ case PMU_INT_ADB:
if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
struct adb_request *req = req_awaiting_reply;
if (!req) {
@@ -1433,25 +1433,28 @@ next:
adb_input(data+1, len-1, 1);
#endif /* CONFIG_ADB */
}
- }
+ break;
+
/* Sound/brightness button pressed */
- else if ((1 << pirq) & PMU_INT_SNDBRT) {
+ case PMU_INT_SNDBRT:
#ifdef CONFIG_PMAC_BACKLIGHT
if (len == 3)
pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4);
#endif
- }
+ break;
+
/* Tick interrupt */
- else if ((1 << pirq) & PMU_INT_TICK) {
- /* Environement or tick interrupt, query batteries */
+ case PMU_INT_TICK:
+ /* Environment or tick interrupt, query batteries */
if (pmu_battery_count) {
if ((--query_batt_timer) == 0) {
query_battery_state();
query_batt_timer = BATTERY_POLLING_COUNT;
}
}
- }
- else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
+ break;
+
+ case PMU_INT_ENVIRONMENT:
if (pmu_battery_count)
query_battery_state();
pmu_pass_intr(data, len);
@@ -1461,7 +1464,9 @@ next:
via_pmu_event(PMU_EVT_POWER, !!(data[1]&8));
via_pmu_event(PMU_EVT_LID, data[1]&1);
}
- } else {
+ break;
+
+ default:
pmu_pass_intr(data, len);
}
goto next;

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