AcoSail/kernel_optimize_test
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[PATCH] [libata] Kill 'count' var in ata_device_add()

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Eliminate redundant loop variable 'count'

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
This commit is contained in:
Jeff Garzik 2006-08-10 16:59:05 +09:00 committed by Tejun Heo
parent 996139f1ce
commit 6d0500df5b
1 changed files with 7 additions and 13 deletions
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20
drivers/scsi/libata-core.c
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@ -5403,7 +5403,7 @@ void ata_host_set_init(struct ata_host_set *host_set,
*/
int ata_device_add(const struct ata_probe_ent *ent)
{
unsigned int count = 0, i;
unsigned int i;
struct device *dev = ent->dev;
struct ata_host_set *host_set;
int rc;
@ -5422,7 +5422,7 @@ int ata_device_add(const struct ata_probe_ent *ent)
host_set->private_data = ent->private_data;
/* register each port bound to this device */
for (i = 0; i < ent->n_ports; i++) {
for (i = 0; i < host_set->n_ports; i++) {
struct ata_port *ap;
unsigned long xfer_mode_mask;
@ -5448,12 +5448,8 @@ int ata_device_add(const struct ata_probe_ent *ent)
ata_chk_status(ap);
host_set->ops->irq_clear(ap);
ata_eh_freeze_port(ap); /* freeze port before requesting IRQ */
count++;
}
if (!count)
goto err_free_ret;
/* obtain irq, that is shared between channels */
rc = request_irq(ent->irq, ent->port_ops->irq_handler, ent->irq_flags,
DRV_NAME, host_set);
@ -5465,13 +5461,11 @@ int ata_device_add(const struct ata_probe_ent *ent)
/* perform each probe synchronously */
DPRINTK("probe begin\n");
for (i = 0; i < count; i++) {
struct ata_port *ap;
for (i = 0; i < host_set->n_ports; i++) {
struct ata_port *ap = host_set->ports[i];
u32 scontrol;
int rc;
ap = host_set->ports[i];
/* init sata_spd_limit to the current value */
if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) {
int spd = (scontrol >> 4) & 0xf;
@ -5527,7 +5521,7 @@ int ata_device_add(const struct ata_probe_ent *ent)
/* probes are done, now scan each port's disk(s) */
DPRINTK("host probe begin\n");
for (i = 0; i < count; i++) {
for (i = 0; i < host_set->n_ports; i++) {
struct ata_port *ap = host_set->ports[i];
ata_scsi_scan_host(ap);
@ -5539,14 +5533,14 @@ int ata_device_add(const struct ata_probe_ent *ent)
return ent->n_ports; /* success */
err_out:
for (i = 0; i < count; i++) {
for (i = 0; i < host_set->n_ports; i++) {
struct ata_port *ap = host_set->ports[i];
if (ap) {
ap->ops->port_stop(ap);
scsi_host_put(ap->host);
}
}
err_free_ret:
kfree(host_set);
VPRINTK("EXIT, returning 0\n");
return 0;