From: Mukesh Ojha <mojha@codeaurora.org>
To: Kangjie Lu <kjlu@umn.edu>
Cc: pakki001@umn.edu, "Lad, Prabhakar" <prabhakar.csengg@gmail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] media: vpss: fix a potential NULL pointer dereference
Date: Wed, 27 Mar 2019 19:03:02 +0530 [thread overview]
Message-ID: <521823d8-a884-2772-5f18-9fc8809b69e4@codeaurora.org> (raw)
In-Reply-To: <20190309065351.1184-1-kjlu@umn.edu>
On 3/9/2019 12:23 PM, Kangjie Lu wrote:
> In case ioremap fails, the fix returns -ENOMEM to avoid NULL
> pointer dereference.
>
> Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
-Mukesh
> ---
> drivers/media/platform/davinci/vpss.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/media/platform/davinci/vpss.c b/drivers/media/platform/davinci/vpss.c
> index 19cf6853411e..f7beed2de9cb 100644
> --- a/drivers/media/platform/davinci/vpss.c
> +++ b/drivers/media/platform/davinci/vpss.c
> @@ -518,6 +518,9 @@ static int __init vpss_init(void)
> return -EBUSY;
>
> oper_cfg.vpss_regs_base2 = ioremap(VPSS_CLK_CTRL, 4);
> + if (unlikely(!oper_cfg.vpss_regs_base2))
> + return -ENOMEM;
> +
> writel(VPSS_CLK_CTRL_VENCCLKEN |
> VPSS_CLK_CTRL_DACCLKEN, oper_cfg.vpss_regs_base2);
>
next prev parent reply other threads:[~2019-03-27 13:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-09 6:53 Kangjie Lu
2019-03-27 13:33 ` Mukesh Ojha [this message]
2019-03-23 2:51 Kangjie Lu
2019-03-26 9:46 ` Lad, Prabhakar
2019-03-27 12:58 ` Mukesh Ojha
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