linux-kernel - Re: [PATCH v1 06/17] scsi :ufs: verify hba controller hce reg value

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Date:	Mon, 26 Oct 2015 13:11:05 -0000
From:	ygardi@...eaurora.org
To:	"Akinobu Mita" <akinobu.mita@...il.com>
Cc:	"Yaniv Gardi" <ygardi@...eaurora.org>,
	"Jej B" <james.bottomley@...senpartnership.com>,
	"Paul Bolle" <pebolle@...cali.nl>,
	"Christoph Hellwig" <hch@...radead.org>,
	"LKML" <linux-kernel@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	linux-arm-msm@...r.kernel.org, "Santosh Y" <santoshsy@...il.com>,
	linux-scsi-owner@...r.kernel.org,
	"Subhash Jadavani" <subhashj@...eaurora.org>,
	"Gilad Broner" <gbroner@...eaurora.org>,
	"Dolev Raviv" <draviv@...eaurora.org>,
	"Raviv Shvili" <rshvili@...eaurora.org>,
	"Vinayak Holikatti" <vinholikatti@...il.com>,
	"James E.J. Bottomley" <jbottomley@...n.com>
Subject: Re: [PATCH v1 06/17] scsi :ufs: verify hba controller hce reg value

> 2015-09-13 23:52 GMT+09:00 Yaniv Gardi <ygardi@...eaurora.org>:
>> Sometimes due to hw issues it takes some time to the
>> host controller register to update. In order to verify the register
>> has updated, a polling is done until its value is set.
>>
>> In addition the functions ufshcd_hba_stop() and
>> ufshcd_wait_for_register() was updated with an additional input
>> parameter, indicating the timeout between reads will
>> be done by sleeping or spinning the cpu.
>>
>> Signed-off-by: Raviv Shvili <rshvili@...eaurora.org>
>> Signed-off-by: Yaniv Gardi <ygardi@...eaurora.org>
>>
>> ---
>>  drivers/scsi/ufs/ufshcd.c | 54
>> ++++++++++++++++++++++++++++-------------------
>>  drivers/scsi/ufs/ufshcd.h | 12 +++--------
>>  2 files changed, 35 insertions(+), 31 deletions(-)
>>
>> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
>> index 6171da8..e5a876c 100644
>> --- a/drivers/scsi/ufs/ufshcd.c
>> +++ b/drivers/scsi/ufs/ufshcd.c
>> @@ -267,11 +267,12 @@ static inline void ufshcd_disable_irq(struct
>> ufs_hba *hba)
>>   * @val - wait condition
>>   * @interval_us - polling interval in microsecs
>>   * @timeout_ms - timeout in millisecs
>> - *
>> + * @can_sleep - perform sleep or just spin
>>   * Returns -ETIMEDOUT on error, zero on success
>>   */
>
> We usually put a blank line between @argument description and
> return value description.
>

will be fixed in v2.
thanks


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