linux-kernel - Re: [PATCH] staging: wilc1000: fix missing read

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Message-ID: <f385b84e-3724-cdaf-323c-7a9c9337b98b@microchip.com>
Date:   Thu, 20 Dec 2018 06:18:37 +0000
From:   <Ajay.Kathat@...rochip.com>
To:     <colin.king@...onical.com>, <Adham.Abozaeid@...rochip.com>,
        <gregkh@...uxfoundation.org>, <linux-wireless@...r.kernel.org>,
        <devel@...verdev.osuosl.org>
CC:     <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: wilc1000: fix missing read_write setting when
 reading data



On 12/19/2018 10:00 PM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Currently the cmd.read_write setting is not initialized so it contains
> garbage from the stack.  Fix this by setting it to 0 to indicate a
> read is required.
> 
> Detected by CoverityScan, CID#1357925 ("Uninitialized scalar variable")
> 
> Fixes: c5c77ba18ea6 ("staging: wilc1000: Add SDIO/SPI 802.11 driver")

Acked-by: Ajay Singh <ajay.kathat@...rochip.com>
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  drivers/staging/wilc1000/wilc_sdio.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/staging/wilc1000/wilc_sdio.c b/drivers/staging/wilc1000/wilc_sdio.c
> index 27fdfbdda5c0..e2f739fef21c 100644
> --- a/drivers/staging/wilc1000/wilc_sdio.c
> +++ b/drivers/staging/wilc1000/wilc_sdio.c
> @@ -861,6 +861,7 @@ static int sdio_read_int(struct wilc *wilc, u32 *int_status)
>  	if (!sdio_priv->irq_gpio) {
>  		int i;
>  
> +		cmd.read_write = 0;
>  		cmd.function = 1;
>  		cmd.address = 0x04;
>  		cmd.data = 0;
>