From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752006Ab3LJCJ0 (ORCPT ); Mon, 9 Dec 2013 21:09:26 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:9294 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751823Ab3LJCJY (ORCPT ); Mon, 9 Dec 2013 21:09:24 -0500 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Mon, 09 Dec 2013 18:02:29 -0800 Date: Mon, 9 Dec 2013 18:09:22 -0800 From: Paul Walmsley X-X-Sender: pwalmsley@tamien To: Eduardo Valentin , Zhang Rui CC: , , Subject: [PATCH] thermal: ti-soc-thermal: clk_round_rate() can return a zero upon error Message-ID: User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Treat both negative and zero return values from clk_round_rate() as errors. This is needed since subsequent patches will convert clk_round_rate()'s return value to be an unsigned type, rather than a signed type, since some clock sources can generate rates higher than (2^31)-1 Hz. Eventually, when calling clk_round_rate(), only a return value of zero will be considered a error. All other values will be considered valid rates. The comparison against values less than 0 is kept to preserve the correct behavior in the meantime. This patch also gets rid of a comparison between unsigned and signed values; a side-benefit. Signed-off-by: Paul Walmsley Cc: Eduardo Valentin Cc: Zhang Rui --- Applies on v3.13-rc3. See also: http://marc.info/?l=linux-arm-kernel&m=138542591313620&w=2 drivers/thermal/ti-soc-thermal/ti-bandgap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c index 74c0e3474d6e..8fe46dbc0c6f 100644 --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c @@ -1248,7 +1248,7 @@ int ti_bandgap_probe(struct platform_device *pdev) clk_rate = clk_round_rate(bgp->div_clk, bgp->conf->sensors[0].ts_data->max_freq); if (clk_rate < bgp->conf->sensors[0].ts_data->min_freq || - clk_rate == 0xffffffff) { + clk_rate <= 0) { ret = -ENODEV; dev_err(&pdev->dev, "wrong clock rate (%d)\n", clk_rate); goto put_clks;