From: Philipp Zabel Date: Wed, 7 Jan 2015 23:04:04 +0000 (+0100) Subject: gpu: ipu-v3: do not divide by zero if the pixel clock is too large X-Git-Tag: firefly_0821_release~176^2~2198^2~8^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=89ce4b0f4e7adda75ac7eec6aaa9b3516390cef2;p=firefly-linux-kernel-4.4.55.git gpu: ipu-v3: do not divide by zero if the pixel clock is too large 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 --- diff --git a/drivers/gpu/ipu-v3/ipu-di.c b/drivers/gpu/ipu-v3/ipu-di.c index b61d6be97602..3ddfb3d0b64d 100644 --- a/drivers/gpu/ipu-v3/ipu-di.c +++ b/drivers/gpu/ipu-v3/ipu-di.c @@ -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);