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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-07 11:24:06 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-08 09:40:04 -0500
commit081a5bcb39b455405d58f79bb3c9398a9d4477ed (patch)
tree4110a2264eba3a8887cdf8a525376f61f2f92bde /drivers/message
parentbdb2b8cab4392ce41ddfbd6773a3da3334daf836 (diff)
[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/message')
-rw-r--r--drivers/message/fusion/mptspi.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 25bcfcf36f2..1effca4e40e 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;
}