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| author | Dave Olson <dave.olson@qlogic.com> | 2008-04-16 21:09:25 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-04-16 21:09:25 -0700 |
| commit | 72708a0a2b60e83255631f2557a85ac7daf33fac (patch) | |
| tree | ba0b26fe6842240ed90cecd2fb741dc4c9f82908 /drivers/infiniband/hw/ipath/ipath_driver.c | |
| parent | a51a2513a8cb201f02d83c37e106909938d2f761 (diff) | |
| download | lwn-72708a0a2b60e83255631f2557a85ac7daf33fac.tar.gz lwn-72708a0a2b60e83255631f2557a85ac7daf33fac.zip | |
IB/ipath: HW workaround for case where chip can send but not receive
Workaround a QLE7140 problem that in rare cases causes flow control
problems after link recovery by forcing a link retrain after recovery.
A module parameter is provided to control the behavior in case it causes
problems.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_driver.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index 5605f4f27521..2cad7335681b 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -82,6 +82,10 @@ module_param_named(hol_timeout_ms, ipath_hol_timeout_ms, uint, S_IRUGO); MODULE_PARM_DESC(hol_timeout_ms, "duration of user app suspension after link failure"); +unsigned ipath_linkrecovery = 1; +module_param_named(linkrecovery, ipath_linkrecovery, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(linkrecovery, "enable workaround for link recovery issue"); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("QLogic <support@pathscale.com>"); MODULE_DESCRIPTION("QLogic InfiniPath driver"); |