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Red Hat Bugzilla – Attachment 576487 Details for
Bug 811142
[abrt] kernel: BUG: soft lockup - CPU#5 stuck for 22s! [kworker/u:6:91]
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[patch]
possible suspicious busy loop and fixing that
busy-loop-issue.patch (text/plain), 662 bytes, created by
Mohammed Shafi
on 2012-04-10 14:51:48 UTC
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Description:
possible suspicious busy loop and fixing that
Filename:
MIME Type:
Creator:
Mohammed Shafi
Created:
2012-04-10 14:51:48 UTC
Size:
662 bytes
patch
obsolete
>diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c >index 3022c4e..a565215 100644 >--- a/drivers/net/wireless/ath/ath9k/hw.c >+++ b/drivers/net/wireless/ath/ath9k/hw.c >@@ -720,12 +720,19 @@ static void ath9k_hw_init_qos(struct ath_hw *ah) > > u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah) > { >+ int i; >+ > 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) >+ for (i = 0; i < 100; i++) { >+ >+ if (REG_READ(ah, PLL4) & PLL4_MEAS_DONE) >+ break; >+ > udelay(100); >+ } > > return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3; > }
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