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Red Hat Bugzilla – Attachment 577225 Details for
Bug 811142
[abrt] kernel: BUG: soft lockup - CPU#5 stuck for 22s! [kworker/u:6:91]
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[patch]
softlockup fix/debug patch with WARN_ON
ar9485-softlockup-debug.patch (text/plain), 792 bytes, created by
Mohammed Shafi
on 2012-04-13 05:31:50 UTC
(
hide
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Description:
softlockup fix/debug patch with WARN_ON
Filename:
MIME Type:
Creator:
Mohammed Shafi
Created:
2012-04-13 05:31:50 UTC
Size:
792 bytes
patch
obsolete
>diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c >index 6fa8128..618891a 100644 >--- a/drivers/net/wireless/ath/ath9k/hw.c >+++ b/drivers/net/wireless/ath/ath9k/hw.c >@@ -719,13 +719,25 @@ static void ath9k_hw_init_qos(struct ath_hw *ah) > > u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *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) { >+ >+ i++; > udelay(100); > >+ if (i > 100) { >+ ath_dbg(common, ANY, "PLL4 meaurement not done"); >+ WARN_ON(1); >+ break; >+ } >+ >+ } >+ > return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3; > } > EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
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