From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Perches <joe@perches.com>
Subject: Re: [PATCH v3 1/1] Input: serio - Add ARC PS/2 driver
Date: Thu, 18 Oct 2012 02:01:56 -0700
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To: Mischa Jonker <mischa.jonker@synopsys.com>
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On Thu, 2012-10-18 at 10:36 +0200, Mischa Jonker wrote:
> This adds support for the PS/2 block that is used in various ARC FPGA
> platforms.
[]
> diff --git a/drivers/input/serio/arc_ps2.c b/drivers/input/serio/arc_ps2.c
[]
> +static void arc_ps2_check_rx(struct arc_ps2_data *arc_ps2,
> +			     struct arc_ps2_port *port)
> +{
> +	unsigned flag, status;
> +	unsigned char data;
> +
> +	while (1) {

infinite loop with bad hardware?
Perhaps a jiffies timeout?