On 11/27/2015, 02:06 PM, Herbert Xu wrote:
> 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?
Yes, it actually can, given the retval is returned only if no data were
read yet.
thanks,
--
js
suse labs
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