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| author | Jeff Skirvin <jeffrey.d.skirvin@intel.com> | 2011-06-20 14:09:31 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2011-07-03 04:04:50 -0700 |
| commit | 9b917987fd16d0687afe550a02f68099419f5d43 (patch) | |
| tree | c7fa80125750e2c624a271867eca5d3e61e25aae | |
| parent | fd0527ab15bfd96f04b084b1b2550f80cf151b60 (diff) | |
| download | linux-stable-9b917987fd16d0687afe550a02f68099419f5d43.tar.gz linux-stable-9b917987fd16d0687afe550a02f68099419f5d43.tar.bz2 linux-stable-9b917987fd16d0687afe550a02f68099419f5d43.zip | |
isci: Disable link layer hang detection
Some targets exceed the hang detect timer. Use the OS timeout to
catch hung tasks.
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/phy.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 784c9a71333a..93a401dfbd30 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -242,11 +242,8 @@ scic_sds_phy_link_layer_initialization(struct scic_sds_phy *sci_phy, &sci_phy->link_layer_registers->maximum_arbitration_wait_timer_timeout); } - /* - * Set the link layer hang detection to 500ms (0x1F4) from its default - * value of 128ms. Max value is 511 ms. - */ - writel(0x1F4, &sci_phy->link_layer_registers->link_layer_hang_detection_timeout); + /* Disable link layer hang detection, rely on the OS timeout for I/O timeouts. */ + writel(0, &sci_phy->link_layer_registers->link_layer_hang_detection_timeout); /* We can exit the initial state to the stopped state */ sci_change_state(&sci_phy->sm, SCI_PHY_STOPPED); |