linux-kernel - Re: [PATCH v2] um: Rewrite host RNG driver.

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Message-ID: <899887272.76523.1567104513068.JavaMail.zimbra@nod.at>
Date:   Thu, 29 Aug 2019 20:48:33 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Dark <dark@...atile.bz>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-um <linux-um@...ts.infradead.org>,
        Richard Weinberger <richard.weinberger@...il.com>,
        Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH v2] um: Rewrite host RNG driver.

----- Ursprüngliche Mail -----
> Von: "Dark" <dark@...atile.bz>
> +	// Returning -EAGAIN to userspace is not nice.
> +	if (err == -EAGAIN)
> +		return 0;

Hmm, doesn't this result in a short read?
The current drives sets the calling task to sleep and wakes
it up as soon data is available again. I'd assumes ti have the
same behavior for the new driver.

Thanks,
//richard