From eb40963c835c69681af516388a2a92b57e2f0fe7 Mon Sep 17 00:00:00 2001 From: David Milburn Date: Thu, 16 Oct 2008 09:26:19 -0500 Subject: [PATCH] libata: ahci enclosure management led sync Synchronize ahci_sw_activity and ahci_sw_activity_blink with ata_port lock. Signed-off-by: David Milburn Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 289719b2cb30..3c71d3133431 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -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); } -- GitLab