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Red Hat Bugzilla – Attachment 577370 Details for
Bug 811142
[abrt] kernel: BUG: soft lockup - CPU#5 stuck for 22s! [kworker/u:6:91]
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[patch]
v2 patch for debugging softlockup
ar9485-softlockup-debug-v2.patch (text/plain), 838 bytes, created by
Mohammed Shafi
on 2012-04-13 14:44:11 UTC
(
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Description:
v2 patch for debugging softlockup
Filename:
MIME Type:
Creator:
Mohammed Shafi
Created:
2012-04-13 14:44:11 UTC
Size:
838 bytes
patch
obsolete
>diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c >index 6fa8128..932199c 100644 >--- a/drivers/net/wireless/ath/ath9k/hw.c >+++ b/drivers/net/wireless/ath/ath9k/hw.c >@@ -719,13 +719,26 @@ static void ath9k_hw_init_qos(struct ath_hw *ah) > > u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah) > { >+ int i = 0; >+ struct ath_common *common = ath9k_hw_common(ah); >+ > 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_err(common, "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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