Commit 1a3e5173 authored by Marc Kleine-Budde's avatar 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: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 7ee330c7
...@@ -1020,13 +1020,13 @@ static int flexcan_probe(struct platform_device *pdev) ...@@ -1020,13 +1020,13 @@ static int flexcan_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "no ipg clock defined\n"); dev_err(&pdev->dev, "no ipg clock defined\n");
return PTR_ERR(clk_ipg); return PTR_ERR(clk_ipg);
} }
clock_freq = clk_get_rate(clk_ipg);
clk_per = devm_clk_get(&pdev->dev, "per"); clk_per = devm_clk_get(&pdev->dev, "per");
if (IS_ERR(clk_per)) { if (IS_ERR(clk_per)) {
dev_err(&pdev->dev, "no per clock defined\n"); dev_err(&pdev->dev, "no per clock defined\n");
return PTR_ERR(clk_per); return PTR_ERR(clk_per);
} }
clock_freq = clk_get_rate(clk_per);
} }
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
......
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