[SCSI] ipr: Stop reading adapter dump prematurely
commit41e9a69641fb3fa86fa9277a179f3ad261d072f7
authorBrian King <brking@linux.vnet.ibm.com>
Wed, 21 Sep 2011 13:51:11 +0000 (21 08:51 -0500)
committerJames Bottomley <JBottomley@Parallels.com>
Thu, 22 Sep 2011 11:30:28 +0000 (22 15:30 +0400)
treecceabbe07245bf46b87278586a273f35a62b17bf
parent5f7a643304553e87f531df95de0ed0d60c002627
[SCSI] ipr: Stop reading adapter dump prematurely

When the ipr driver decides to dump the adapter, it changes the
sdt_state to GET_DUMP, then prepares the adapter so that the dump
can be read. However, if the ipr worker thread wakes up for some
reason before the driver has put the adapter in a state where it
can succesfully dump the adapter, the driver will start dumping
the adapter too early, which can potentially trigger a BUG check
in the pci config blocking API. Fix this by adding a new
sdt_state to differentiate between the ipr driver wanting to dump
the adapter in the near future and wanting to dump the adapter now.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
drivers/scsi/ipr.c
drivers/scsi/ipr.h