linux-kernel - Re: [PATCH] HID: hiddev: fix returned errno code in hiddev

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Message-ID: <560BB1CA.8090300@osg.samsung.com>
Date:	Wed, 30 Sep 2015 10:56:26 +0100
From:	Luis de Bethencourt <luisbg@....samsung.com>
To:	linux-kernel@...r.kernel.org
CC:	jikos@...nel.com, linux-usb@...r.kernel.org,
	linux-input@...r.kernel.org
Subject: Re: [PATCH] HID: hiddev: fix returned errno code in hiddev_connect()

On 30/09/15 10:52, Luis de Bethencourt wrote:
> The driver is using -1 instead of the -ENOMEM defined macro to specify
> that a buffer allocation failed. Since the error number is propagated,
> the caller will get a -EPERM which is the wrong error condition.
> 
> Also, the smatch tool complains with the following warning:
> hiddev_connect() warn: returning -1 instead of -ENOMEM is sloppy
> 
> Signed-off-by: Luis de Bethencourt <luisbg@....samsung.com>
> ---
>  drivers/hid/usbhid/hiddev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
> index 2f1ddca..c5290ff 100644
> --- a/drivers/hid/usbhid/hiddev.c
> +++ b/drivers/hid/usbhid/hiddev.c
> @@ -894,7 +894,7 @@ int hiddev_connect(struct hid_device *hid, unsigned int force)
>  	}
>  
>  	if (!(hiddev = kzalloc(sizeof(struct hiddev), GFP_KERNEL)))
> -		return -1;
> +		return -ENOMEM;
>  
>  	init_waitqueue_head(&hiddev->wait);
>  	INIT_LIST_HEAD(&hiddev->list);
> 

Hello,

I got an "Undelivered Mail Returned to Sender" from Jiri Kosina's
jikos@...nel.com email address. This email is listed multiple times
in the MAINTAINERS file, does he have a new address to update this
file?

Thanks,
Luis
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