From: Marc Kleine-Budde Date: Mon, 25 Nov 2013 21:15:20 +0000 (+0100) Subject: can: flexcan: use correct clock as base for bit rate calculation X-Git-Tag: v4.9.8~7330^2~30^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1a3e5173f5e72cbf7f0c8927b33082e361c16d72;p=platform%2Fkernel%2Flinux-rpi3.git can: flexcan: use correct clock as base for bit rate calculation The flexcan IP core uses the peripheral clock ("per") as basic clock for the bit timing calculation. However the driver uses the the wrong clock ("ipg"). This leads to wrong bit rates if the rates on both clock are different. This patch fixes the problem by using the correct clock for the bit rate calculation. Cc: linux-stable Signed-off-by: Marc Kleine-Budde --- diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index ae08cf1..aaed97b 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -1020,13 +1020,13 @@ static int flexcan_probe(struct platform_device *pdev) dev_err(&pdev->dev, "no ipg clock defined\n"); return PTR_ERR(clk_ipg); } - clock_freq = clk_get_rate(clk_ipg); clk_per = devm_clk_get(&pdev->dev, "per"); if (IS_ERR(clk_per)) { dev_err(&pdev->dev, "no per clock defined\n"); return PTR_ERR(clk_per); } + clock_freq = clk_get_rate(clk_per); } mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);