Commit e6d902a3 authored by Brian King's avatar Brian King Committed by Jeff Garzik
Browse files

[PATCH] libata: Conditionally set host->max_cmd_len



In preparation for SAS attached SATA devices, which will
not have a libata scsi_host, only setup host->max_cmd_len
if ap->host exists.
Signed-off-by: default avatarBrian King <brking@us.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent a93620b8
......@@ -1325,6 +1325,19 @@ static void ata_dev_config_ncq(struct ata_device *dev,
snprintf(desc, desc_sz, "NCQ (depth %d/%d)", hdepth, ddepth);
}
static void ata_set_port_max_cmd_len(struct ata_port *ap)
{
int i;
if (ap->host) {
ap->host->max_cmd_len = 0;
for (i = 0; i < ATA_MAX_DEVICES; i++)
ap->host->max_cmd_len = max_t(unsigned int,
ap->host->max_cmd_len,
ap->device[i].cdb_len);
}
}
/**
* ata_dev_configure - Configure the specified ATA/ATAPI device
* @dev: Target device to configure
......@@ -1344,7 +1357,7 @@ int ata_dev_configure(struct ata_device *dev, int print_info)
struct ata_port *ap = dev->ap;
const u16 *id = dev->id;
unsigned int xfer_mask;
int i, rc;
int rc;
if (!ata_dev_enabled(dev) && ata_msg_info(ap)) {
ata_dev_printk(dev, KERN_INFO,
......@@ -1474,11 +1487,7 @@ int ata_dev_configure(struct ata_device *dev, int print_info)
cdb_intr_string);
}
ap->host->max_cmd_len = 0;
for (i = 0; i < ATA_MAX_DEVICES; i++)
ap->host->max_cmd_len = max_t(unsigned int,
ap->host->max_cmd_len,
ap->device[i].cdb_len);
ata_set_port_max_cmd_len(ap);
/* limit bridge transfers to udma5, 200 sectors */
if (ata_dev_knobble(dev)) {
......
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