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| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2008-08-13 21:37:01 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-08-16 10:24:12 -0500 |
| commit | c795c1e4b68a74536f0fb18744d0e381ceb1f37e (patch) | |
| tree | 5078b0f569d05c3a5a8108da139e83baf716854f /drivers/scsi/qla2xxx/qla_def.h | |
| parent | 19851f136ab37d7ac6f7c865329d13db54712ec0 (diff) | |
| download | talos-op-linux-c795c1e4b68a74536f0fb18744d0e381ceb1f37e.tar.gz talos-op-linux-c795c1e4b68a74536f0fb18744d0e381ceb1f37e.zip | |
[SCSI] qla2xxx: Explicitly tear-down vports during PCI remove_one().
During internal testing, we've seen issues (hangs) with the
'deferred' vport tear-down-processing typically accompanied with
the fc_remove_host() call. This is due to the current
implementation's back-end vport handling being performed by the
physical-HA's DPC thread where premature shutdown could lead to
latent vport requests without a processor.
This should also address a problem reported by Gal Rosen
(http://marc.info/?l=linux-scsi&m=121731664417358&w=2) where the
driver would attempt to awaken a previously torn-down DPC thread
from interrupt context by implicitly calling wake_up_process()
rather than the driver's qla2xxx_wake_dpc() helper. Rather, than
reshuffle the remove_one() device-removal code, during unload,
depend on the driver's timer to wake-up the DPC process, by
limiting wake-ups based on an 'unloading' flag.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_def.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 6da31ba94404..94a720eabfd8 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2237,6 +2237,7 @@ typedef struct scsi_qla_host { #define REGISTER_FDMI_NEEDED 26 #define FCPORT_UPDATE_NEEDED 27 #define VP_DPC_NEEDED 28 /* wake up for VP dpc handling */ +#define UNLOADING 29 uint32_t device_flags; #define DFLG_LOCAL_DEVICES BIT_0 |
