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serial: sh-sci: prevent lockup on full TTY buffers
[pandora-kernel.git]
/
drivers
/
cpufreq
/
speedstep-lib.c
diff --git
a/drivers/cpufreq/speedstep-lib.c
b/drivers/cpufreq/speedstep-lib.c
index
8af2d2f
..
2c0345a
100644
(file)
--- a/
drivers/cpufreq/speedstep-lib.c
+++ b/
drivers/cpufreq/speedstep-lib.c
@@
-399,6
+399,7
@@
unsigned int speedstep_get_freqs(enum speedstep_processor processor,
pr_debug("previous speed is %u\n", prev_speed);
+ preempt_disable();
local_irq_save(flags);
/* switch to low state */
@@
-463,6
+464,8
@@
unsigned int speedstep_get_freqs(enum speedstep_processor processor,
out:
local_irq_restore(flags);
+ preempt_enable();
+
return ret;
}
EXPORT_SYMBOL_GPL(speedstep_get_freqs);