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Date: Sat, 25 May 2019 08:25:10 +0200 From: Takashi Iwai <tiwai@...e.de> To: "Colin King" <colin.king@...onical.com> Cc: <alsa-devel@...a-project.org>, "Liam Girdwood" <lgirdwood@...il.com>, "Mark Brown" <broonie@...nel.org>, "Jaroslav Kysela" <perex@...ex.cz>, <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH][next] ASoC: cx2072x: fix integer overflow on unsigned int multiply On Sat, 25 May 2019 00:25:51 +0200, Colin King wrote: > > From: Colin Ian King <colin.king@...onical.com> > > In the case where frac_div larger than 96 the result of an unsigned > multiplication overflows an unsigned int. For example, this can > happen when the sample_rate is 192000 and pll_input is 122. Fix > this by casing the first term of the mutiply to a u64. Also remove > the extraneous parentheses around the expression. > > Addresses-Coverity: ("Unintentional integer overflow") > Fixes: a497a4363706 ("ASoC: Add support for Conexant CX2072X CODEC") > Signed-off-by: Colin Ian King <colin.king@...onical.com> Reviewed-by: Takashi Iwai <tiwai@...e.de> thanks, Takashi
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