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Subject[209/262] cciss: add small delay when using PCI Power Management to reset for kump
3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mike Miller <mike.miller@hp.com>

commit ab5dbebe33e0c353e8545f09c34553ac3351dad6 upstream.

The P600 requires a small delay when changing states. Otherwise we may think
the board did not reset and we bail. This for kdump only and is particular
to the P600.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/block/cciss.c | 7 +++++++
1 file changed, 7 insertions(+)

--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4533,6 +4533,13 @@ static int cciss_controller_hard_reset(s
pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
pmcsr |= PCI_D0;
pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
+
+ /*
+ * The P600 requires a small delay when changing states.
+ * Otherwise we may think the board did not reset and we bail.
+ * This for kdump only and is particular to the P600.
+ */
+ msleep(500);
}
return 0;
}



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