linux-kernel - Re: [PATCH] Driver 'sd' needs updating

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Date:	Tue, 24 Mar 2009 16:52:33 +0100
From:	Hannes Reinecke <hare@...e.de>
To:	Boaz Harrosh <bharrosh@...asas.com>
Cc:	James Bottomley <James.Bottomley@...senPartnership.com>,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH] Driver 'sd' needs updating

Hi Boaz,

Boaz Harrosh wrote:
> Hannes Reinecke wrote:
>> If a driver sets blk_queue_prep_rq() it should clean up itself
>> and not rely on the bus callbacks to handle this. This removes
>> the need to hook into bus->remove() as these should not be used
>> at the same time as driver->remove().
>>
>> Signed-off-by: Hannes Reinecke <hare@...e.de>
>> Signed-off-by: Kay Sievers <kay.sievers@...y.org>
> 
> I spoke too soon please see below
> 
>> ---
>>  drivers/scsi/scsi_lib.c    |    6 ++++++
>>  drivers/scsi/scsi_sysfs.c  |   17 -----------------
>>  drivers/scsi/sd.c          |    2 ++
>>  drivers/scsi/sr.c          |    1 +
>>  include/scsi/scsi_driver.h |    1 +
>>  5 files changed, 10 insertions(+), 17 deletions(-)
>>
>> diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
>> index 4b13e36..73df41b 100644
>> --- a/drivers/scsi/scsi_lib.c
>> +++ b/drivers/scsi/scsi_lib.c
>> @@ -1222,6 +1222,12 @@ int scsi_prep_fn(struct request_queue *q, struct request *req)
>>  	return scsi_prep_return(q, req, ret);
>>  }
>>  
>> +void scsi_reset_prep_fn(struct request_queue *q)
> 
> Here it is declared void
> but
> 
>> diff --git a/include/scsi/scsi_driver.h b/include/scsi/scsi_driver.h
>> index 1f5ca7f..2e22929 100644
>> --- a/include/scsi/scsi_driver.h
>> +++ b/include/scsi/scsi_driver.h
>> @@ -32,5 +32,6 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req);
>>  int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req);
>>  int scsi_prep_state_check(struct scsi_device *sdev, struct request *req);
>>  int scsi_prep_return(struct request_queue *q, struct request *req, int ret);
>> +int scsi_reset_prep_fn(struct request_queue *);
> 
> Here it is returning int.
> 
> My FC10 compiler does not like that:
>   drivers/scsi/scsi_lib.c:1415: error: conflicting types for 'scsi_reset_prep_fn'
>   include/scsi/scsi_driver.h:35: error: previous declaration of 'scsi_reset_prep_fn' was here
> 
>>  
>>  #endif /* _SCSI_SCSI_DRIVER_H */
> 
> I fixed it to be void, will test later
> 
Argl. You are correct. New patch attached.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@...e.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)

View attachment "0001-Driver-sd-needs-updating.patch" of type "text/x-patch" (3498 bytes)