linux-kernel - Re: [PATCH] hw_random: core, sleep interruptible in read

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Date:	Fri, 27 Nov 2015 21:06:03 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	linux-kernel@...r.kernel.org, Matt Mackall <mpm@...enic.com>,
	linux-crypto@...r.kernel.org
Subject: Re: [PATCH] hw_random: core, sleep interruptible in read

On Thu, Nov 26, 2015 at 08:56:29PM +0100, Jiri Slaby wrote:
>
> diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
> index a064237ff362..f003df162e09 100644
> --- a/drivers/char/hw_random/core.c
> +++ b/drivers/char/hw_random/core.c
> @@ -238,7 +238,10 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
>  			goto out;
>  		}
>  
> -		mutex_lock(&reading_mutex);
> +		if (mutex_lock_interruptible(&reading_mutex)) {
> +			err = -EINTR;

Shouldn't this be ERESTARTSYS?

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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