libata: add @ap to ata_wait_register() and introduce ata_msleep()

Add optional @ap argument to ata_wait_register() and replace msleep()
calls with ata_msleep() which take optional @ap in addition to the
duration.  These will be used to implement EH exclusion.

This patch doesn't cause any behavior difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 437f92597788..524dbe8be163 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -567,7 +567,7 @@ int ahci_stop_engine(struct ata_port *ap)
         writel(tmp, port_mmio + PORT_CMD);
 
         /* wait for engine to stop. This could be as long as 500 msec */
-        tmp = ata_wait_register(port_mmio + PORT_CMD,
+        tmp = ata_wait_register(ap, port_mmio + PORT_CMD,
                                 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
         if (tmp & PORT_CMD_LIST_ON)
                 return -EIO;
@@ -614,7 +614,7 @@ static int ahci_stop_fis_rx(struct ata_port *ap)
         writel(tmp, port_mmio + PORT_CMD);
 
         /* wait for completion, spec says 500ms, give it 1000 */
-        tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
+        tmp = ata_wait_register(ap, port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
                                 PORT_CMD_FIS_ON, 10, 1000);
         if (tmp & PORT_CMD_FIS_ON)
                 return -EBUSY;
@@ -671,7 +671,7 @@ static int ahci_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
                         readl(port_mmio + PORT_CMD);
 
                         /* wait 10ms to be sure we've come out of LPM state */
-                        msleep(10);
+                        ata_msleep(ap, 10);
                 } else {
                         cmd |= PORT_CMD_ALPE;
                         if (policy == ATA_LPM_MIN_POWER)
@@ -740,7 +740,7 @@ static void ahci_start_port(struct ata_port *ap)
                                                                emp->led_state,
                                                                4);
                                 if (rc == -EBUSY)
-                                        msleep(1);
+                                        ata_msleep(ap, 1);
                                 else
                                         break;
                         }
@@ -799,7 +799,7 @@ int ahci_reset_controller(struct ata_host *host)
                  * reset must complete within 1 second, or
                  * the hardware should be considered fried.
                  */
-                tmp = ata_wait_register(mmio + HOST_CTL, HOST_RESET,
+                tmp = ata_wait_register(NULL, mmio + HOST_CTL, HOST_RESET,
                                         HOST_RESET, 10, 1000);
 
                 if (tmp & HOST_RESET) {
@@ -1179,7 +1179,7 @@ int ahci_kick_engine(struct ata_port *ap)
         writel(tmp, port_mmio + PORT_CMD);
 
         rc = 0;
-        tmp = ata_wait_register(port_mmio + PORT_CMD,
+        tmp = ata_wait_register(ap, port_mmio + PORT_CMD,
                                 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
         if (tmp & PORT_CMD_CLO)
                 rc = -EIO;
@@ -1209,8 +1209,8 @@ static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
         writel(1, port_mmio + PORT_CMD_ISSUE);
 
         if (timeout_msec) {
-                tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
-                                        1, timeout_msec);
+                tmp = ata_wait_register(ap, port_mmio + PORT_CMD_ISSUE,
+                                        0x1, 0x1, 1, timeout_msec);
                 if (tmp & 0x1) {
                         ahci_kick_engine(ap);
                         return -EBUSY;
@@ -1257,7 +1257,7 @@ int ahci_do_softreset(struct ata_link *link, unsigned int *class,
         }
 
         /* spec says at least 5us, but be generous and sleep for 1ms */
-        msleep(1);
+        ata_msleep(ap, 1);
 
         /* issue the second D2H Register FIS */
         tf.ctl &= ~ATA_SRST;