diff options
| author | Jeff Skirvin <jeffrey.d.skirvin@intel.com> | 2012-03-09 07:42:00 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2012-05-17 23:33:40 +0200 |
| commit | 9608b6408e637abeec101abb6aebd3343f0ebac4 (patch) | |
| tree | 4c06b2ed04c61c2e76dd7d663a54b7cc1ae0717f | |
| parent | isci: Save the suspension hint for upcoming suspensions. (diff) | |
| download | linux-9608b6408e637abeec101abb6aebd3343f0ebac4.tar.xz linux-9608b6408e637abeec101abb6aebd3343f0ebac4.zip | |
isci: Manage the LLHANG timer enable/disable per-device.
The LLHANG timer should be enabled once per device. This patch corrects
both the timer enable and the timer disable for the remote device.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | drivers/scsi/isci/remote_device.c | 17 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.h | 8 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_node_context.c | 3 |
3 files changed, 20 insertions, 8 deletions
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 1a85e9edef6a..86aca11120f3 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1520,3 +1520,20 @@ enum sci_status isci_remote_device_reset_complete( return status; } +void isci_dev_set_hang_detection_timeout( + struct isci_remote_device *idev, + u32 timeout) +{ + if (dev_is_sata(idev->domain_dev)) { + if (timeout) { + if (test_and_set_bit(IDEV_RNC_LLHANG_ENABLED, + &idev->flags)) + return; /* Already enabled. */ + } else if (!test_and_clear_bit(IDEV_RNC_LLHANG_ENABLED, + &idev->flags)) + return; /* Not enabled. */ + + sci_port_set_hang_detection_timeout(idev->owning_port, + timeout); + } +} diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 8b7817cf4352..ef563e5360a3 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -85,6 +85,7 @@ struct isci_remote_device { #define IDEV_GONE 3 #define IDEV_IO_READY 4 #define IDEV_IO_NCQERROR 5 + #define IDEV_RNC_LLHANG_ENABLED 6 unsigned long flags; struct kref kref; struct isci_port *isci_port; @@ -308,12 +309,7 @@ static inline void sci_remote_device_decrement_request_count(struct isci_remote_ idev->started_request_count--; } -static inline void isci_dev_set_hang_detection_timeout( - struct isci_remote_device *idev, - u32 timeout) -{ - sci_port_set_hang_detection_timeout(idev->owning_port, timeout); -} +void isci_dev_set_hang_detection_timeout(struct isci_remote_device *idev, u32 timeout); enum sci_status sci_remote_device_frame_handler( struct isci_remote_device *idev, diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 2ac92608cc2d..48565de50016 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -615,8 +615,7 @@ enum sci_status sci_remote_node_context_suspend( if ((suspend_reason == SCI_SW_SUSPEND_NORMAL) || (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT)) { - if ((suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT) - && dev_is_sata(idev->domain_dev)) + if (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT) isci_dev_set_hang_detection_timeout(idev, 0x00000001); sci_remote_device_post_request( |