[PATCH] libata: clean up debounce parameters and improve parameter selection
The names of predefined debounce timing parameters didn't exactly
match their usages. Rename to more generic names and implement param
selection helper sata_ehc_deb_timing() which uses EHI_HOTPLUGGED to
select params.
Combined with the previous EHI_RESUME_LINK differentiation, this makes
parameter selection accurate. e.g. user scan resumes link but normal
deb param is used instead of hotplug param.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 90db054..7317445 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -61,9 +61,9 @@
#include "libata.h"
/* debounce timing parameters in msecs { interval, duration, timeout } */
-const unsigned long sata_deb_timing_boot[] = { 5, 100, 2000 };
-const unsigned long sata_deb_timing_eh[] = { 25, 500, 2000 };
-const unsigned long sata_deb_timing_before_fsrst[] = { 100, 2000, 5000 };
+const unsigned long sata_deb_timing_normal[] = { 5, 100, 2000 };
+const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 };
+const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 };
static unsigned int ata_dev_init_params(struct ata_device *dev,
u16 heads, u16 sectors);
@@ -2588,7 +2588,7 @@
/* first, debounce phy if SATA */
if (ap->cbl == ATA_CBL_SATA) {
- rc = sata_phy_debounce(ap, sata_deb_timing_eh);
+ rc = sata_phy_debounce(ap, sata_deb_timing_hotplug);
/* if debounced successfully and offline, no need to wait */
if ((rc == 0 || rc == -EOPNOTSUPP) && ata_port_offline(ap))
@@ -2624,7 +2624,7 @@
int ata_std_prereset(struct ata_port *ap)
{
struct ata_eh_context *ehc = &ap->eh_context;
- const unsigned long *timing;
+ const unsigned long *timing = sata_ehc_deb_timing(ehc);
int rc;
/* handle link resume & hotplug spinup */
@@ -2642,11 +2642,6 @@
/* if SATA, resume phy */
if (ap->cbl == ATA_CBL_SATA) {
- if (ap->pflags & ATA_PFLAG_LOADING)
- timing = sata_deb_timing_boot;
- else
- timing = sata_deb_timing_eh;
-
rc = sata_phy_resume(ap, timing);
if (rc && rc != -EOPNOTSUPP) {
/* phy resume failed */
@@ -2734,6 +2729,8 @@
*/
int sata_std_hardreset(struct ata_port *ap, unsigned int *class)
{
+ struct ata_eh_context *ehc = &ap->eh_context;
+ const unsigned long *timing = sata_ehc_deb_timing(ehc);
u32 scontrol;
int rc;
@@ -2771,7 +2768,7 @@
msleep(1);
/* bring phy back */
- sata_phy_resume(ap, sata_deb_timing_eh);
+ sata_phy_resume(ap, timing);
/* TODO: phy layer with polling, timeouts, etc. */
if (ata_port_offline(ap)) {
@@ -5852,9 +5849,9 @@
* Do not depend on ABI/API stability.
*/
-EXPORT_SYMBOL_GPL(sata_deb_timing_boot);
-EXPORT_SYMBOL_GPL(sata_deb_timing_eh);
-EXPORT_SYMBOL_GPL(sata_deb_timing_before_fsrst);
+EXPORT_SYMBOL_GPL(sata_deb_timing_normal);
+EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug);
+EXPORT_SYMBOL_GPL(sata_deb_timing_long);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
EXPORT_SYMBOL_GPL(ata_std_ports);
EXPORT_SYMBOL_GPL(ata_device_add);