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authorTejun Heo <tj@kernel.org>2010-09-06 17:56:29 +0200
committerJeff Garzik <jgarzik@redhat.com>2010-10-21 20:21:05 -0400
commit97750cebb3000a9cc08f8ce8dc8c7143be7d7201 (patch)
tree04220b8a8ed3f353e3e0023805b32e7d746dc6f3 /drivers/ata/libata-core.c
parenta97c40068fab5d85c4241451fc312cb9025d7e6c (diff)
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>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 7c5538b9fa3..42d9ce29f50 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3404,7 +3404,7 @@ int ata_wait_ready(struct ata_link *link, unsigned long deadline,
warned = 1;
}
- msleep(50);
+ ata_msleep(link->ap, 50);
}
}
@@ -3425,7 +3425,7 @@ int ata_wait_ready(struct ata_link *link, unsigned long deadline,
int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
int (*check_ready)(struct ata_link *link))
{
- msleep(ATA_WAIT_AFTER_RESET);
+ ata_msleep(link->ap, ATA_WAIT_AFTER_RESET);
return ata_wait_ready(link, deadline, check_ready);
}
@@ -3473,7 +3473,7 @@ int sata_link_debounce(struct ata_link *link, const unsigned long *params,
last_jiffies = jiffies;
while (1) {
- msleep(interval);
+ ata_msleep(link->ap, interval);
if ((rc = sata_scr_read(link, SCR_STATUS, &cur)))
return rc;
cur &= 0xf;
@@ -3538,7 +3538,7 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
* immediately after resuming. Delay 200ms before
* debouncing.
*/
- msleep(200);
+ ata_msleep(link->ap, 200);
/* is SControl restored correctly? */
if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
@@ -3742,7 +3742,7 @@ int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
/* Couldn't find anything in SATA I/II specs, but AHCI-1.1
* 10.4.2 says at least 1 ms.
*/
- msleep(1);
+ ata_msleep(link->ap, 1);
/* bring link back */
rc = sata_link_resume(link, timing, deadline);
@@ -6483,8 +6483,14 @@ int ata_ratelimit(void)
return __ratelimit(&ratelimit);
}
+void ata_msleep(struct ata_port *ap, unsigned int msecs)
+{
+ msleep(msecs);
+}
+
/**
* ata_wait_register - wait until register value changes
+ * @ap: ATA port to wait register for, can be NULL
* @reg: IO-mapped register
* @mask: Mask to apply to read register value
* @val: Wait condition
@@ -6506,7 +6512,7 @@ int ata_ratelimit(void)
* RETURNS:
* The final register value.
*/
-u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
+u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, u32 val,
unsigned long interval, unsigned long timeout)
{
unsigned long deadline;
@@ -6521,7 +6527,7 @@ u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
deadline = ata_deadline(jiffies, timeout);
while ((tmp & mask) == val && time_before(jiffies, deadline)) {
- msleep(interval);
+ ata_msleep(ap, interval);
tmp = ioread32(reg);
}
@@ -6605,6 +6611,7 @@ EXPORT_SYMBOL_GPL(ata_std_postreset);
EXPORT_SYMBOL_GPL(ata_dev_classify);
EXPORT_SYMBOL_GPL(ata_dev_pair);
EXPORT_SYMBOL_GPL(ata_ratelimit);
+EXPORT_SYMBOL_GPL(ata_msleep);
EXPORT_SYMBOL_GPL(ata_wait_register);
EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
EXPORT_SYMBOL_GPL(ata_scsi_slave_config);