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authorAnton Blanchard <anton@samba.org>2011-08-01 19:43:45 +1000
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-11 09:35:24 -0800
commitfa11f5a1d9e8e199dfacb16a4288d4d4c5c549ff (patch)
tree0d5e710a1aa984348b0745ea083e0e41f7af5b33 /drivers/scsi
parent20e801924287a2eebe00395f4cebc8eeb7d5aa62 (diff)
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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')
-rw-r--r--drivers/scsi/ipr.c2
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;