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| author | Anton Blanchard <anton@samba.org> | 2011-08-01 19:43:45 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-11 09:35:24 -0800 |
| commit | fa11f5a1d9e8e199dfacb16a4288d4d4c5c549ff (patch) | |
| tree | 0d5e710a1aa984348b0745ea083e0e41f7af5b33 /drivers/scsi/ipr.c | |
| parent | 20e801924287a2eebe00395f4cebc8eeb7d5aa62 (diff) | |
| download | kernel_samsung_smdk4412-fa11f5a1d9e8e199dfacb16a4288d4d4c5c549ff.tar.gz kernel_samsung_smdk4412-fa11f5a1d9e8e199dfacb16a4288d4d4c5c549ff.tar.bz2 kernel_samsung_smdk4412-fa11f5a1d9e8e199dfacb16a4288d4d4c5c549ff.zip | |
ipr: Always initiate hard reset in kdump kernel
commit 5d7c20b7fa5c6ca19e871b4050e321c99d32bd43 upstream.
During kdump testing I noticed timeouts when initialising each IPR
adapter. While the driver has logic to detect an adapter in an
indeterminate state, it wasn't triggering and each adapter went
through a 5 minute timeout before finally going operational.
Some analysis showed the needs_hard_reset flag wasn't getting set.
We can check the reset_devices kernel parameter which is set by
kdump and force a full reset. This fixes the problem.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/scsi/ipr.c')
| -rw-r--r-- | drivers/scsi/ipr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 888086c4e70..c5c7c3abb4b 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -8812,7 +8812,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev, uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) ioa_cfg->needs_hard_reset = 1; - if (interrupts & IPR_PCII_ERROR_INTERRUPTS) + if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) ioa_cfg->needs_hard_reset = 1; if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) ioa_cfg->ioa_unit_checked = 1; |