linux-kernel - Re: [PATCH 2/5] drivers: bus: omap_l3: Convert to use devm_request_and

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

Date:	Tue, 04 Mar 2014 13:12:39 +0400
From:	Alexander Shiyan <shc_work@...l.ru>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	Santosh Shilimkar <santosh.shilimkar@...com>,
	Tony Lindgren <tony@...mide.com>,
	Olof Johansson <olof@...om.net>,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/5] drivers: bus: omap_l3: Convert to use devm_request_and_ioremap()

Вторник,  4 марта 2014, 11:01 +02:00 от Peter Ujfalusi <peter.ujfalusi@...com>:
> We can then remove the iounmap() calls from probe and remove.
> Since the driver requests the resources via index we can do the mem resource
> request within a for loop.
> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti>
> ---

> +	/* Get mem resources */
> +	for (i = 0; i < 3; i++) {
> +		struct resource	*res = platform_get_resource(pdev,
> +							     IORESOURCE_MEM, i);
> +		if (!res) {
> +			dev_err(&pdev->dev, "couldn't find resource %d\n", i);
> +			return -ENODEV;
> +		}

No need to check "res". devm_request_and_ioremap() do all for us.

> -	l3->l3_base[2] = ioremap(res->start, resource_size(res));
> -	if (!l3->l3_base[2]) {
> -		dev_err(&pdev->dev, "ioremap failed\n");
> -		ret = -ENOMEM;
> -		goto err2;
> +		l3->l3_base[i] = devm_request_and_ioremap(&pdev->dev, res);
> +		if (!l3->l3_base[i]) {

if (IS_ERR(l3->l3_base[i]))

> +			dev_err(&pdev->dev, "ioremap %d failed\n", i);

Unnecessary.

> +			return -ENOMEM;

return PTR_ERR(l3->l3_base[i]);

---