diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/ti/clkctrl.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c index 284ba449615c..38dbcc1b7e2c 100644 --- a/drivers/clk/ti/clkctrl.c +++ b/drivers/clk/ti/clkctrl.c @@ -21,6 +21,7 @@ #include <linux/of_address.h> #include <linux/clk/ti.h> #include <linux/delay.h> +#include <linux/timekeeping.h> #include "clock.h" #define NO_IDLEST 0x1 @@ -90,7 +91,18 @@ static bool _omap4_is_ready(u32 val) static bool _omap4_is_timeout(union omap4_timeout *time, u32 timeout) { - if (unlikely(_early_timeout)) { + /* + * There are two special cases where ktime_to_ns() can't be + * used to track the timeouts. First one is during early boot + * when the timers haven't been initialized yet. The second + * one is during suspend-resume cycle while timekeeping is + * being suspended / resumed. Clocksource for the system + * can be from a timer that requires pm_runtime access, which + * will eventually bring us here with timekeeping_suspended, + * during both suspend entry and resume paths. This happens + * at least on am43xx platform. + */ + if (unlikely(_early_timeout || timekeeping_suspended)) { if (time->cycles++ < timeout) { udelay(1); return false; |