From: Paul Walmsley Date: Tue, 10 Dec 2013 02:09:22 +0000 (-0800) Subject: thermal: ti-soc-thermal: clk_round_rate() can return a zero upon error X-Git-Tag: firefly_0821_release~176^2~3779^2^2^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c68789e5346f165441f41a6e09ebfd7caa0c8745;p=firefly-linux-kernel-4.4.55.git thermal: ti-soc-thermal: clk_round_rate() can return a zero upon error 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 Signed-off-by: Eduardo Valentin --- diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c index 3ab12ee359b7..a1271b55103a 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;