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authorHannes Reinecke <hare@suse.de>2014-11-24 15:37:27 +0100
committerChristoph Hellwig <hch@lst.de>2014-11-24 16:13:16 +0100
commiteeea2f9c2f2ecc5f3217edcacc95817047b143c2 (patch)
tree30ae59b8af6754aca843d83a334f040459f1a031 /drivers/scsi/am53c974.c
parent6df388f2d549d3a2a7ad58b632d2ecd25fc0ff3f (diff)
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esp_scsi: correctly detect am53c974
The am53c974 returns the same ID as the FAS236, but implements things slightly differently. So detect the am53c974 by checking for ESP_CONFIG4 register. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/am53c974.c')
-rw-r--r--drivers/scsi/am53c974.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/am53c974.c b/drivers/scsi/am53c974.c
index a42e8db057a4..6e88e38bd2a4 100644
--- a/drivers/scsi/am53c974.c
+++ b/drivers/scsi/am53c974.c
@@ -368,6 +368,8 @@ static void dc390_check_eeprom(struct esp *esp)
}
esp->scsi_id = EEbuf[DC390_EE_ADAPT_SCSI_ID];
esp->num_tags = 2 << EEbuf[DC390_EE_TAG_CMD_NUM];
+ if (EEbuf[DC390_EE_MODE2] & DC390_EE_MODE2_ACTIVE_NEGATION)
+ esp->config4 |= ESP_CONFIG4_RADE | ESP_CONFIG4_RAE;
}
static int pci_esp_probe_one(struct pci_dev *pdev,