ARM: twd: ensure timer reload is reprogrammed on entry to periodic mode
authorRussell King <rmk+kernel@arm.linux.org.uk>
Tue, 25 Jan 2011 10:35:36 +0000 (10:35 +0000)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Tue, 25 Jan 2011 21:17:58 +0000 (21:17 +0000)
Ensure that the twd timer reload value is reprogrammed each time we
enter periodic mode.  This ensures that the reload value is always
reset correctly.

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/kernel/smp_twd.c

index fd9156698ab93798244f4560f9a4983e69d12e94..60636f499cb3eafd5318413dd4c83a97949abe91 100644 (file)
@@ -36,6 +36,7 @@ static void twd_set_mode(enum clock_event_mode mode,
                /* timer load already set up */
                ctrl = TWD_TIMER_CONTROL_ENABLE | TWD_TIMER_CONTROL_IT_ENABLE
                        | TWD_TIMER_CONTROL_PERIODIC;
+               __raw_writel(twd_timer_rate / HZ, twd_base + TWD_TIMER_LOAD);
                break;
        case CLOCK_EVT_MODE_ONESHOT:
                /* period set, and timer enabled in 'next_event' hook */
@@ -81,7 +82,7 @@ int twd_timer_ack(void)
 
 static void __cpuinit twd_calibrate_rate(void)
 {
-       unsigned long load, count;
+       unsigned long count;
        u64 waitjiffies;
 
        /*
@@ -116,10 +117,6 @@ static void __cpuinit twd_calibrate_rate(void)
                printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
                        (twd_timer_rate / 1000000) % 100);
        }
-
-       load = twd_timer_rate / HZ;
-
-       __raw_writel(load, twd_base + TWD_TIMER_LOAD);
 }
 
 /*