Merge branch 'linus' into smp/hotplug

Apply upstream changes to avoid conflicts with pending patches.

1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c
index 7e3fd375a627..92f6e4deee74 100644
--- a/drivers/clocksource/bcm_kona_timer.c
+++ b/drivers/clocksource/bcm_kona_timer.c
@@ -66,10 +66,10 @@ static void kona_timer_disable_and_clear(void __iomem *base)
 
 }
 
-static void
+static int
 kona_timer_get_counter(void __iomem *timer_base, uint32_t *msw, uint32_t *lsw)
 {
-        int loop_limit = 4;
+        int loop_limit = 3;
 
         /*
          * Read 64-bit free running counter
@@ -83,18 +83,19 @@ kona_timer_get_counter(void __iomem *timer_base, uint32_t *msw, uint32_t *lsw)
          *      if new hi-word is equal to previously read hi-word then stop.
          */
 
-        while (--loop_limit) {
+        do {
                 *msw = readl(timer_base + KONA_GPTIMER_STCHI_OFFSET);
                 *lsw = readl(timer_base + KONA_GPTIMER_STCLO_OFFSET);
                 if (*msw == readl(timer_base + KONA_GPTIMER_STCHI_OFFSET))
                         break;
-        }
+        } while (--loop_limit);
         if (!loop_limit) {
                 pr_err("bcm_kona_timer: getting counter failed.\n");
                 pr_err(" Timer will be impacted\n");
+                return -ETIMEDOUT;
         }
 
-        return;
+        return 0;
 }
 
 static int kona_timer_set_next_event(unsigned long clc,
@@ -112,8 +113,11 @@ static int kona_timer_set_next_event(unsigned long clc,
 
         uint32_t lsw, msw;
         uint32_t reg;
+        int ret;
 
-        kona_timer_get_counter(timers.tmr_regs, &msw, &lsw);
+        ret = kona_timer_get_counter(timers.tmr_regs, &msw, &lsw);
+        if (ret)
+                return ret;
 
         /* Load the "next" event tick value */
         writel(lsw + clc, timers.tmr_regs + KONA_GPTIMER_STCM0_OFFSET);