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Commit aadec012 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Mauro Carvalho Chehab
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[media] omap3isp: Fix division by 0 



If the requested clock rate passed to the XCLK set_rate or round_rate
operation is 0, the driver will try to divide by 0. Fix this.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: default avatarSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 584ca025

drivers/media/platform/omap3isp/isp.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -220,6 +220,9 @@ static u32 isp_xclk_calc_divider(unsigned long *rate, unsigned long parent_rate) 
		return ISPTCTRL_CTRL_DIV_BYPASS;

		return ISPTCTRL_CTRL_DIV_BYPASS;

	}

	}





	if (*rate == 0)

		*rate = 1;



	divider = DIV_ROUND_CLOSEST(parent_rate, *rate);

	divider = DIV_ROUND_CLOSEST(parent_rate, *rate);

	if (divider >= ISPTCTRL_CTRL_DIV_BYPASS)

	if (divider >= ISPTCTRL_CTRL_DIV_BYPASS)

		divider = ISPTCTRL_CTRL_DIV_BYPASS - 1;

		divider = ISPTCTRL_CTRL_DIV_BYPASS - 1;