linux-kernel - Re: [RFC] ion:change ion_cma

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Date:	Tue, 27 Jan 2015 10:26:06 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
Cc:	"'gregkh@...uxfoundation.org'" <gregkh@...uxfoundation.org>,
	"'tranmanphong@...il.com'" <tranmanphong@...il.com>,
	"'fabio.estevam@...escale.com'" <fabio.estevam@...escale.com>,
	"'prime.zeng@...wei.com'" <prime.zeng@...wei.com>,
	"'devel@...verdev.osuosl.org'" <devel@...verdev.osuosl.org>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"Gao, Neil" <Neil.Gao@...ymobile.com>
Subject: Re: [RFC] ion:change ion_cma_allocate return error value

On Tue, Jan 27, 2015 at 02:04:21PM +0800, Wang, Yalin wrote:
> This patch change the error return value from -1 to -ENOMEM,
> so that userspace can get the correct errno, otherwise,
> -1 will be -EPERM, userspace will print permission deny for allocation
> failure.
> 
> Signed-off-by: Yalin Wang <yalin.wang@...ymobile.com>

Looks good.

Reviewed-by: Dan Carpenter <dan.carpenter@...cle.com>

regards,
dan carpenter

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