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kernel: calibrate the TWD timer even when booting with only one CPU, it is used for the watchdog timer base

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Fixes booting on single-core CNS3xxx devices

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 36308
This commit is contained in:
Felix Fietkau 2013-04-10 16:07:50 +00:00
parent 06733c2650
commit edd8048107
2 changed files with 46 additions and 0 deletions
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23
target/linux/generic/patches-3.8/995-mpcore_twd_calibrate_single_core.patch Normal file
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@ -0,0 +1,23 @@
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -189,7 +189,7 @@ core_initcall(twd_cpufreq_init);
#endif
-static void __cpuinit twd_calibrate_rate(void)
+static int twd_calibrate_rate(void)
{
unsigned long count;
u64 waitjiffies;
@@ -226,8 +226,11 @@ static void __cpuinit twd_calibrate_rate
printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
(twd_timer_rate / 10000) % 100);
}
+ return 0;
}
+device_initcall(twd_calibrate_rate);
+
static irqreturn_t twd_handler(int irq, void *dev_id)
{
struct clock_event_device *evt = *(struct clock_event_device **)dev_id;

23
target/linux/generic/patches-3.9/995-mpcore_twd_calibrate_single_core.patch Normal file
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@ -0,0 +1,23 @@
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -186,7 +186,7 @@ core_initcall(twd_cpufreq_init);
#endif
-static void __cpuinit twd_calibrate_rate(void)
+static int twd_calibrate_rate(void)
{
unsigned long count;
u64 waitjiffies;
@@ -223,8 +223,11 @@ static void __cpuinit twd_calibrate_rate
printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
(twd_timer_rate / 10000) % 100);
}
+ return 0;
}
+device_initcall(twd_calibrate_rate);
+
static irqreturn_t twd_handler(int irq, void *dev_id)
{
struct clock_event_device *evt = *(struct clock_event_device **)dev_id;