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gpu: ipu-v3: do not divide by zero if the pixel clock is too large

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Even if an unsupported mode with a pixel clock larger than two times the
264 MHz IPU HSP clock is set, don't divide by zero.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2015-01-08 00:04:04 +01:00
parent c517d838eb
commit 89ce4b0f4e
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/ipu-v3/ipu-di.c
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@ -459,6 +459,8 @@ static void ipu_di_config_clock(struct ipu_di *di,
clkrate = clk_get_rate(di->clk_ipu);
div = DIV_ROUND_CLOSEST(clkrate, sig->mode.pixelclock);
if (div == 0)
div = 1;
rate = clkrate / div;
error = rate / (sig->mode.pixelclock / 1000);