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Subject[043/102] [SCSI] ses: requesting a fault indication
3.0-stable review patch.  If anyone has any objections, please let us know.

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

From: Douglas Gilbert <dgilbert@interlog.com>

commit 2a350cab9daf9a46322d83b091bb05cf54ccf6ab upstream.

Noticed that when the sysfs interface of the SCSI SES
driver was used to request a fault indication the LED
flashed but the buzzer didn't sound. So it was doing
what REQUEST IDENT (locate) should do.

Changelog:
- fix the setting of REQUEST FAULT for the device slot
and array device slot elements in the enclosure control
diagnostic page
- note the potentially defective code that reads the
FAULT SENSED and FAULT REQUESTED bits from the enclosure
status diagnostic page

The attached patch is against git/scsi-misc-2.6

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/scsi/ses.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -160,6 +160,10 @@ static unsigned char *ses_get_page2_desc
return NULL;
}

+/* For device slot and array device slot elements, byte 3 bit 6
+ * is "fault sensed" while byte 3 bit 5 is "fault reqstd". As this
+ * code stands these bits are shifted 4 positions right so in
+ * sysfs they will appear as bits 2 and 1 respectively. Strange. */
static void ses_get_fault(struct enclosure_device *edev,
struct enclosure_component *ecomp)
{
@@ -181,7 +185,7 @@ static int ses_set_fault(struct enclosur
/* zero is disabled */
break;
case ENCLOSURE_SETTING_ENABLED:
- desc[2] = 0x02;
+ desc[3] = 0x20;
break;
default:
/* SES doesn't do the SGPIO blink settings */



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