linux-kernel - Re: [PATCH v2] at91: pmc: Fixed irq's name allocation for programmable clocks

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Date:	Tue, 04 Feb 2014 14:57:31 +0100
From:	Boris BREZILLON <b.brezillon@...rkiz.com>
To:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	nicolas.ferre@...el.com
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Mike Turquette <mturquette@...aro.org>
Subject: Re: [PATCH v2] at91: pmc: Fixed irq's name allocation for programmable
 clocks

Hello, Mike,

Please do not take this patch: the work of JJ to fix the prog clk 
prepare bug
will remove the irq handling from the prog clk driver, as a result, we won't
have to request the irq anymore.

Sorry for the inconvenience.

Best Regards,

Boris

On 04/02/2014 09:42, Boris BREZILLON wrote:
> Hello JJ,
>
> Sorry for the noise (I added Mike in the CC list).
>
> BTW, thanks for fixing this bug.
>
> Mike, could you take this bug fix for the next 3.14 release ?
>
> Best Regards,
>
> Boris
>
> On 04/02/2014 09:21, Jean-Jacques Hiblot wrote:
>> The name provided to request_irq() must be valid until the irq is 
>> released.
>> This patch stores the name in the internal data structure.
>>
>> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...phandler.com>
> Acked-by: Boris BREZILLON <b.brezillon@...rkiz.com>
>> ---
>>   drivers/clk/at91/clk-programmable.c | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/clk/at91/clk-programmable.c 
>> b/drivers/clk/at91/clk-programmable.c
>> index 8e242c7..799b75c 100644
>> --- a/drivers/clk/at91/clk-programmable.c
>> +++ b/drivers/clk/at91/clk-programmable.c
>> @@ -44,6 +44,7 @@ struct clk_programmable {
>>       u8 css;
>>       u8 pres;
>>       u8 slckmck;
>> +    char irq_name[11];
>>       const struct clk_programmable_layout *layout;
>>   };
>>   @@ -247,7 +248,6 @@ at91_clk_register_programmable(struct at91_pmc 
>> *pmc, unsigned int irq,
>>       struct clk_programmable *prog;
>>       struct clk *clk = NULL;
>>       struct clk_init_data init;
>> -    char irq_name[11];
>>         if (id > PROG_ID_MAX)
>>           return ERR_PTR(-EINVAL);
>> @@ -269,9 +269,9 @@ at91_clk_register_programmable(struct at91_pmc 
>> *pmc, unsigned int irq,
>>       prog->irq = irq;
>>       init_waitqueue_head(&prog->wait);
>>       irq_set_status_flags(prog->irq, IRQ_NOAUTOEN);
>> -    snprintf(irq_name, sizeof(irq_name), "clk-prog%d", id);
>> +    snprintf(prog->irq_name, sizeof(prog->irq_name), "clk-prog%d", id);
>>       ret = request_irq(prog->irq, clk_programmable_irq_handler,
>> -              IRQF_TRIGGER_HIGH, irq_name, prog);
>> +              IRQF_TRIGGER_HIGH, prog->irq_name, prog);
>>       if (ret)
>>           return ERR_PTR(ret);
>

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