linux-kernel - Re: [PATCH v1 02/20] [SCSI] mpt3sas: Get IOC_FACTS information using handshake protocol only after HBA card gets into READY or Operational state.

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Date:	Wed, 17 Jun 2015 13:27:43 +0200
From:	Tomas Henzl <thenzl@...hat.com>
To:	Sreekanth Reddy <sreekanth.reddy@...gotech.com>, jejb@...nel.org
CC:	martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
	JBottomley@...allels.com, Sathya.Prakash@...gotech.com,
	linux-kernel@...r.kernel.org, hch@...radead.org,
	jthumshirn@...e.de, joe.lawrence@...atus.com
Subject: Re: [PATCH v1 02/20] [SCSI] mpt3sas: Get IOC_FACTS information using
  handshake protocol only after HBA card gets into READY or Operational state.

On 06/17/2015 11:10 AM, Sreekanth Reddy wrote:
> 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.
> 
> Changes in v1:
>    If PCI Recovery is on then return with -EFAULT in the function _base_wait_for_iocstate().
> 
> Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@...gotech.com>
Reviewed-by: Tomas Henzl <thenzl@...hat.com>

Tomas

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