From: Doug Chapman <[EMAIL PROTECTED]>
Patch for: http://bugzilla.kernel.org/show_bug.cgi?id=8426
A recent code cleanup that moved code from mptscsih to mptspi inadvertently
change the order some code was called. This caused a massive slowdown (of
150x to 300x) on the CD/DVD drive on the high-end HP Integrity servers.
Signed-off-by: Doug Chapman <[EMAIL PROTECTED]>
Cc: "Moore, Eric Dean" <[EMAIL PROTECTED]>
Cc: James Bottomley <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/message/fusion/mptspi.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff -puN
drivers/message/fusion/mptspi.c~fix-for-bugzilla-8426-massive-slowdown-on-scsi-cd-dvd-drive-connected-to-mptspi-driver
drivers/message/fusion/mptspi.c
---
a/drivers/message/fusion/mptspi.c~fix-for-bugzilla-8426-massive-slowdown-on-scsi-cd-dvd-drive-connected-to-mptspi-driver
+++ a/drivers/message/fusion/mptspi.c
@@ -727,13 +727,15 @@ static int mptspi_slave_configure(struct
struct _MPT_SCSI_HOST *hd =
(struct _MPT_SCSI_HOST *)sdev->host->hostdata;
VirtTarget *vtarget = scsi_target(sdev)->hostdata;
- int ret = mptscsih_slave_configure(sdev);
+ int ret;
+
+ mptspi_initTarget(hd, vtarget, sdev);
+
+ ret = mptscsih_slave_configure(sdev);
if (ret)
return ret;
- mptspi_initTarget(hd, vtarget, sdev);
-
ddvprintk((MYIOC_s_INFO_FMT "id=%d min_period=0x%02x"
" max_offset=0x%02x max_width=%d\n", hd->ioc->name,
sdev->id, spi_min_period(scsi_target(sdev)),
_
-
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