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authorEd Lin <ed.lin@promise.com>2007-05-09 20:50:37 -0800
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-05-16 12:40:51 -0400
commit69f4a513911455670d3322fb5252b437c0485707 (patch)
tree15343daad98d417ed1e498a7792e6d08200a614d /drivers/scsi/stex.c
parente0b2e597d5dd8c4f3778545f65c29a9c6aba0e3a (diff)
[SCSI] stex: extend hard reset wait time
During hard bus reset of st_shasta controllers, 1 ms is not enough for 16-port controllers, although it's good for 8-port controllers. Extend the wait time to 100 ms to allow bus resets finish successfully. Signed-off-by: Ed Lin <ed.lin@promise.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/stex.c')
-rw-r--r--drivers/scsi/stex.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 96dcbac9545..81dd3b740da 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -1041,7 +1041,12 @@ static void stex_hard_reset(struct st_hba *hba)
pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
- msleep(1);
+
+ /*
+ * 1 ms may be enough for 8-port controllers. But 16-port controllers
+ * require more time to finish bus reset. Use 100 ms here for safety
+ */
+ msleep(100);
pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);