Commit 1a3e5173 authored Nov 25, 2013 by Marc Kleine-Budde

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 <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

parent 7ee330c7

drivers/net/can/flexcan.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);