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author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2008-08-14 00:37:01 -0400 |
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committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-08-16 11:24:12 -0400 |
commit | c795c1e4b68a74536f0fb18744d0e381ceb1f37e (patch) | |
tree | 5078b0f569d05c3a5a8108da139e83baf716854f /mm/backing-dev.c | |
parent | 19851f136ab37d7ac6f7c865329d13db54712ec0 (diff) |
[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 'mm/backing-dev.c')
0 files changed, 0 insertions, 0 deletions