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-rw-r--r--drivers/net/wireless/ath/ath9k/hw.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 8b0c2ca1a56..6973620846e 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -718,13 +718,25 @@ static void ath9k_hw_init_qos(struct ath_hw *ah)
u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
{
+ struct ath_common *common = ath9k_hw_common(ah);
+ int i = 0;
+
REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
udelay(100);
REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
- while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0)
+ while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
+
udelay(100);
+ if (WARN_ON_ONCE(i >= 100)) {
+ ath_err(common, "PLL4 meaurement not done\n");
+ break;
+ }
+
+ i++;
+ }
+
return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
}
EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);