[PATCH V2 04/15] aacraid: Prevent E3 lockup when deleting units

Raghava Aditya Renukunta
2017-02-17T03:28:11Z

Arrconf management utility at times sends fibs with AdapterProcessed set
in its fibs. This causes the controller to panic and lockup.

Fixed by failing the commands that have AdapterProcessed set in its flag.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>

---
Changes in V2:
None

drivers/scsi/aacraid/commsup.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index a8dd4b5..e221321 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -527,6 +527,10 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,

if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
return -EBUSY;
+
+ if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))
+ return -EINVAL;
+
/*
* There are 5 cases with the wait and response requested flags.
* The only invalid cases are if the caller requests to wait and
--
2.7.4