Commit faf321b0 authored by Benjamin Rood's avatar Benjamin Rood Committed by Martin K. Petersen

pm80xx: do not examine registers for iButton feature if ATTO adapter

ATTO adapters do not support this feature.  If the firmware fails to be
ready, it should not check the examined registers in order to examine
the state of the feature in order to prevent undefined behavior.
Signed-off-by: default avatarBenjamin Rood <brood@attotech.com>
Reviewed-by: default avatarJack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent c5614df7
......@@ -1267,6 +1267,8 @@ pm80xx_chip_soft_rst(struct pm8001_hba_info *pm8001_ha)
/* check iButton feature support for motherboard controller */
if (pm8001_ha->pdev->subsystem_vendor !=
PCI_VENDOR_ID_ADAPTEC2 &&
pm8001_ha->pdev->subsystem_vendor !=
PCI_VENDOR_ID_ATTO &&
pm8001_ha->pdev->subsystem_vendor != 0) {
ibutton0 = pm8001_cr32(pm8001_ha, 0,
MSGU_HOST_SCRATCH_PAD_6);
......
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