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libata: ahci enclosure management led sync 

Synchronize ahci_sw_activity and ahci_sw_activity_blink with ata_port lock.

Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
David Milburn 2008-10-16 09:26:19 -05:00 committed by Jeff Garzik
parent e7c0d217cd
commit eb40963c83
1 changed files with 3 additions and 0 deletions
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3
drivers/ata/ahci.c
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@ -1223,6 +1223,7 @@ static void ahci_sw_activity_blink(unsigned long arg)
struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
unsigned long led_message = emp->led_state;
u32 activity_led_state;
unsigned long flags;
led_message &= 0xffff0000;
led_message |= ap->port_no | (link->pmp << 8);
@ -1231,6 +1232,7 @@ static void ahci_sw_activity_blink(unsigned long arg)
* toggle state of LED and reset timer. If not,
* turn LED to desired idle state.
*/
spin_lock_irqsave(ap->lock, flags);
if (emp->saved_activity != emp->activity) {
emp->saved_activity = emp->activity;
/* get the current LED state */
@ -1253,6 +1255,7 @@ static void ahci_sw_activity_blink(unsigned long arg)
if (emp->blink_policy == BLINK_OFF)
led_message |= (1 << 16);
}
spin_unlock_irqrestore(ap->lock, flags);
ahci_transmit_led_message(ap, led_message, 4);
}