linux-kernel - Re: [PATCH RFT 3/3] ARM: tegra: dts: seaboard: enable keyboard

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 for Android: free password hash cracker in your pocket

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

Message-ID: <50F09FCB.70809@wwwdotorg.org>
Date:	Fri, 11 Jan 2013 16:27:07 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	Laxman Dewangan <ldewangan@...dia.com>,
	linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFT 3/3] ARM: tegra: dts: seaboard: enable keyboard

On 01/11/2013 04:24 PM, Russell King - ARM Linux wrote:
> On Fri, Jan 11, 2013 at 04:09:59PM -0700, Stephen Warren wrote:
>> On 01/11/2013 06:33 AM, Laxman Dewangan wrote:
>>> 	kbc->clk = clk_get(&pdev->dev, NULL);
>>> 	if (IS_ERR(kbc->clk)) {
>>> 		dev_err(&pdev->dev, "failed to get keyboard clock\n");
>>> 		err = PTR_ERR(kbc->clk);
>>> 		goto err_iounmap;
>>> 	}
>>
>> Should that check be if (!kbc-clk) instead? Or does the common clock
>> framework require if (IS_ERR_OR_NULL(kbc->clk)); hopefully not since
>> IS_ERR_OR_NULL shouldn't be used any more.
> 
> /**
>  * clk_get - lookup and obtain a reference to a clock producer.
>  * @dev: device for clock "consumer"
>  * @id: clock consumer ID
>  *
>  * Returns a struct clk corresponding to the clock producer, or
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>  * valid IS_ERR() condition containing errno.  ...
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> Or, put another way:
> 
> 	If (!IS_ERR(clk))
> 		The_Clock_Is_Valid();
> 	Else
> 		The_Clock_Is_Invalid();
> 		The_Error = PTR_ERR(clk);

OK, but that doesn't appear to be what happened in practice.
--
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/