linux-kernel - Re: [PATCH 1/4] gpio/aspeed: Fix incorrect number of banks

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Message-ID: <39AE527D-F629-4AD7-980C-61C55C5B8718@fb.com>
Date:   Wed, 11 Sep 2019 17:48:28 +0000
From:   Vijay Khemka <vijaykhemka@...com>
To:     Rashmica Gupta <rashmica.g@...il.com>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "bgolaszewski@...libre.com" <bgolaszewski@...libre.com>
CC:     "linux-aspeed@...ts.ozlabs.org" <linux-aspeed@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/4] gpio/aspeed: Fix incorrect number of banks



On 9/11/19, 5:16 AM, "Linux-aspeed on behalf of Rashmica Gupta" <linux-aspeed-bounces+vijaykhemka=fb.com@...ts.ozlabs.org on behalf of rashmica.g@...il.com> wrote:

    Fixes: 361b79119a4b7 ('gpio: Add Aspeed driver')
    
    Signed-off-by: Rashmica Gupta <rashmica.g@...il.com>
    ---
     drivers/gpio/gpio-aspeed.c | 2 +-
     1 file changed, 1 insertion(+), 1 deletion(-)
    
    diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
    index 9defe25d4721..77752b2624e8 100644
    --- a/drivers/gpio/gpio-aspeed.c
    +++ b/drivers/gpio/gpio-aspeed.c
    @@ -1165,7 +1165,7 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
     	gpio->chip.base = -1;
     
     	/* Allocate a cache of the output registers */
    -	banks = gpio->config->nr_gpios >> 5;
    +	banks = (gpio->config->nr_gpios >> 5) + 1;
If number of gpios are 32 then it should be only 1 bank, as per above it is 2 bank.
     	gpio->dcache = devm_kcalloc(&pdev->dev,
     				    banks, sizeof(u32), GFP_KERNEL);
     	if (!gpio->dcache)
    -- 
    2.20.1