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| author | Dave Maurer <david.c.maurer@intel.com> | 2012-06-22 06:45:33 +0000 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2012-07-03 12:09:30 -0700 |
| commit | a90037560588e51b3e98b49537799137cbfda17d (patch) | |
| tree | d72aba9734c36fc06fc6fab2ebd56399ff8b2979 /drivers/scsi/isci | |
| parent | 6d70a74ffd616073a68ae0974d98819bfa8e6da6 (diff) | |
| download | linux-3.10-a90037560588e51b3e98b49537799137cbfda17d.tar.gz linux-3.10-a90037560588e51b3e98b49537799137cbfda17d.tar.bz2 linux-3.10-a90037560588e51b3e98b49537799137cbfda17d.zip | |
isci: fix COMSAS negation timout workaround for WD SAS drives
The following patch is a fix for the WD workaround
COMSAS negation timeout change. This patch disables the
OOB SM when the OOB is placed in reset, which allows
the updated COMSAS negation timeout value to take
effect.
Cc: Dan Thompson <daniel.j.thompson@intel.com>
Reported-by: Dan Thompson <daniel.j.thompson@intel.com>
Signed-off-by: Dave Maurer <david.c.maurer@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/scsi/isci')
| -rw-r--r-- | drivers/scsi/isci/phy.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 18f43d4c30b..ebb8f530f70 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -1205,6 +1205,7 @@ static void scu_link_layer_start_oob(struct isci_phy *iphy) /** Reset OOB sequence - start */ val = readl(&ll->phy_configuration); val &= ~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) | + SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE) | SCU_SAS_PCFG_GEN_BIT(HARD_RESET)); writel(val, &ll->phy_configuration); readl(&ll->phy_configuration); /* flush */ @@ -1236,6 +1237,7 @@ static void scu_link_layer_tx_hard_reset( * to the starting state. */ phy_configuration_value = readl(&iphy->link_layer_registers->phy_configuration); + phy_configuration_value &= ~(SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE)); phy_configuration_value |= (SCU_SAS_PCFG_GEN_BIT(HARD_RESET) | SCU_SAS_PCFG_GEN_BIT(OOB_RESET)); |