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| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-07-07 11:24:06 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-07-08 09:40:04 -0500 |
| commit | 081a5bcb39b455405d58f79bb3c9398a9d4477ed (patch) | |
| tree | 4110a2264eba3a8887cdf8a525376f61f2f92bde /drivers | |
| parent | bdb2b8cab4392ce41ddfbd6773a3da3334daf836 (diff) | |
| download | lwn-081a5bcb39b455405d58f79bb3c9398a9d4477ed.tar.gz lwn-081a5bcb39b455405d58f79bb3c9398a9d4477ed.zip | |
[SCSI] mptspi: fix oops in mptspi_dv_renegotiate_work()
The problem here is that if the ioc faults too early in the bring up
sequence (as it usually does for an irq routing problem), ioc_reset gets
called before the scsi host is even allocated. This causes an oops when
it later schedules a renegotiation. Fix this by checking ioc->sh before
trying to renegotiate.
Cc: "Moore, Eric" <Eric.Moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/message/fusion/mptspi.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c index 25bcfcf36f2e..1effca4e40e1 100644 --- a/drivers/message/fusion/mptspi.c +++ b/drivers/message/fusion/mptspi.c @@ -1266,13 +1266,18 @@ mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd) static int mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) { - struct _MPT_SCSI_HOST *hd = shost_priv(ioc->sh); int rc; rc = mptscsih_ioc_reset(ioc, reset_phase); - if (reset_phase == MPT_IOC_POST_RESET) + /* only try to do a renegotiation if we're properly set up + * if we get an ioc fault on bringup, ioc->sh will be NULL */ + if (reset_phase == MPT_IOC_POST_RESET && + ioc->sh) { + struct _MPT_SCSI_HOST *hd = shost_priv(ioc->sh); + mptspi_dv_renegotiate(hd); + } return rc; } |