[PATCH 1/3] 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 p.zabel@pengutronix.de --- drivers/gpu/ipu-v3/ipu-di.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/ipu-v3/ipu-di.c b/drivers/gpu/ipu-v3/ipu-di.c index b61d6be..3ddfb3d 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);