linux-kernel - Re: [PATCH 2/4] serial: vt8500: ioremap'd resource is never freed

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <50F6AB4B.6090902@mvista.com>
Date:	Wed, 16 Jan 2013 17:29:47 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Tony Prisk <linux@...sktech.co.nz>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	vt8500-wm8505-linux-kernel@...glegroups.com,
	linux@....linux.org.uk, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/4] serial: vt8500: ioremap'd resource is never freed

Hello.

On 15-01-2013 8:58, Tony Prisk wrote:

> Memory mapped via ioremap call is never released. Rather than add an
> iounmap call, change allocation function to devm_request_and_ioremap.

> Also, change the error on failure for this call to -EBUSY rather than
> -EADDRNOTAVAIL.

    You meant "-EADDRNOTAVAIL rather than -ENOMEM". ;-)

> Signed-off-by: Tony Prisk <linux@...sktech.co.nz>
> ---
>   drivers/tty/serial/vt8500_serial.c |    4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

> diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
> index 4c4a58d..3e76dff 100644
> --- a/drivers/tty/serial/vt8500_serial.c
> +++ b/drivers/tty/serial/vt8500_serial.c
> @@ -615,9 +615,9 @@ static int vt8500_serial_probe(struct platform_device *pdev)
>   	snprintf(vt8500_port->name, sizeof(vt8500_port->name),
>   		 "VT8500 UART%d", pdev->id);
>
> -	vt8500_port->uart.membase = ioremap(mmres->start, resource_size(mmres));
> +	vt8500_port->uart.membase = devm_request_and_ioremap(&pdev->dev, mmres);
>   	if (!vt8500_port->uart.membase) {
> -		ret = -ENOMEM;
> +		ret = -EADDRNOTAVAIL;
>   		goto err;
>   	}

WBR, Sergei

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/