mpt3sas: Get IOC_FACTS information using handshake protocol only after HBA card gets...
authorSreekanth Reddy <sreekanth.reddy@avagotech.com>
Tue, 30 Jun 2015 06:54:48 +0000 (12:24 +0530)
committerJames Bottomley <JBottomley@Odin.com>
Thu, 27 Aug 2015 18:08:23 +0000 (11:08 -0700)
commit4dc8c8087f0304ff8d06f862520406b11aac4a66
treec6c03cde95039c4d4186cac8433abb48ebeb65c2
parentfb77bb5376a55f4e6c8d9243249e82831a276ee5
mpt3sas: Get IOC_FACTS information using handshake protocol only after HBA card gets into READY or Operational state.

Driver initialization fails if driver tries to send IOC facts request message
when the IOC is in reset or in a fault state.

This patch will make sure that

 1.Driver to send IOC facts request message only if HBA is in operational or
   ready state.

 2.If IOC is in fault state, a diagnostic reset would be issued.

 3.If IOC is in reset state then driver will wait for 10 seconds to exit out
   of reset state.  If the HBA continues to be in reset state, then the HBA
   wouldn't be claimed by the driver.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
drivers/scsi/mpt3sas/mpt3sas_base.c