linux-kernel - Re: [PATCH 2/2] gpio: davinci: Fix the number of controllers allocated

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Message-ID: <56B86442.4030301@ti.com>
Date:	Mon, 8 Feb 2016 15:17:46 +0530
From:	Keerthy <a0393675@...com>
To:	Grygorii Strashko <grygorii.strashko@...com>,
	Keerthy <j-keerthy@...com>, <linus.walleij@...aro.org>,
	<gnurou@...il.com>
CC:	<linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<lokeshvutla@...com>, Santosh Shilimkar <ssantosh@...nel.org>,
	Sekhar Nori <nsekhar@...com>
Subject: Re: [PATCH 2/2] gpio: davinci: Fix the number of controllers
 allocated



On Thursday 28 January 2016 07:48 PM, Grygorii Strashko wrote:
> On 01/28/2016 03:38 PM, Keerthy wrote:
>> From: Lokesh Vutla <lokeshvutla@...com>
>>
>> Driver only needs to allocate for [ngpio / 32] controllers,
>> as each controller handles 32 gpios. But the current driver
>> allocates for ngpio of which the extra allocated are unused.
>> Fix it be registering only the required number of controllers.
>>
>> Signed-off-by: Lokesh Vutla <lokeshvutla@...com>
>> Signed-off-by: Keerthy <j-keerthy@...com>
>
> Reviewed-by: Grygorii Strashko <grygorii.strashko@...com>

A gentle ping on this patch. Thanks Grygorii for the review.

>
>> ---
>>   drivers/gpio/gpio-davinci.c | 5 +++--
>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
>> index c889f31..cd007a6 100644
>> --- a/drivers/gpio/gpio-davinci.c
>> +++ b/drivers/gpio/gpio-davinci.c
>> @@ -195,7 +195,7 @@ static int davinci_gpio_of_xlate(struct gpio_chip
>> *gc,
>>   static int davinci_gpio_probe(struct platform_device *pdev)
>>   {
>>       int i, base;
>> -    unsigned ngpio;
>> +    unsigned ngpio, nbank;
>>       struct davinci_gpio_controller *chips;
>>       struct davinci_gpio_platform_data *pdata;
>>       struct davinci_gpio_regs __iomem *regs;
>> @@ -224,8 +224,9 @@ static int davinci_gpio_probe(struct
>> platform_device *pdev)
>>       if (WARN_ON(ARCH_NR_GPIOS < ngpio))
>>           ngpio = ARCH_NR_GPIOS;
>>
>> +    nbank = DIV_ROUND_UP(ngpio, 32);
>>       chips = devm_kzalloc(dev,
>> -                 ngpio * sizeof(struct davinci_gpio_controller),
>> +                 nbank * sizeof(struct davinci_gpio_controller),
>>                    GFP_KERNEL);
>>       if (!chips)
>>           return -ENOMEM;
>>
>
>