i2c: at91: Handle return value of clk_prepare_enable (56a6cb88) · Commits · 戴 / test

clk_prepare_enable() can fail here and we must check its return value. Also, add a missing clk_disable_unprepare(). Signed-off-by:

drivers/i2c/busses/i2c-at91.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -1083,13 +1083,17 @@ static int at91_twi_probe(struct platform_device *pdev)
		dev_err(dev->dev, "no clock defined\n");
		return -ENODEV;
		}
		clk_prepare_enable(dev->clk);
		rc = clk_prepare_enable(dev->clk);
		if (rc)
		return rc;

		if (dev->dev->of_node) {
		rc = at91_twi_configure_dma(dev, phy_addr);
		if (rc == -EPROBE_DEFER)
		if (rc == -EPROBE_DEFER) {
		clk_disable_unprepare(dev->clk);
		return rc;
		}
		}

		if (!of_property_read_u32(pdev->dev.of_node, "atmel,fifo-size",
		&dev->fifo_size)) {