From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sun, 22 May 2022 14:22:07 +0200 Subject: [PATCH] i2c: mediatek: Fix an error handling path in mtk_i2c_probe() [ Upstream commit de87b603b0919e31578c8fa312a3541f1fb37e1c ] The clsk are prepared, enabled, then disabled. So if an error occurs after the disable step, they are still prepared. Add an error handling path to unprepare the clks in such a case, as already done in the .remove function. Fixes: 8b4fc246c3ff ("i2c: mediatek: Optimize master_xfer() and avoid circular locking") Signed-off-by: Christophe JAILLET Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Qii Wang Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-mt65xx.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index bdecb78bfc26d20871ed488a420a39ded5086332..8e6985354fd59f88df2d2b39f883953a24488e05 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -1420,17 +1420,22 @@ static int mtk_i2c_probe(struct platform_device *pdev) if (ret < 0) { dev_err(&pdev->dev, "Request I2C IRQ %d fail\n", irq); - return ret; + goto err_bulk_unprepare; } i2c_set_adapdata(&i2c->adap, i2c); ret = i2c_add_adapter(&i2c->adap); if (ret) - return ret; + goto err_bulk_unprepare; platform_set_drvdata(pdev, i2c); return 0; + +err_bulk_unprepare: + clk_bulk_unprepare(I2C_MT65XX_CLK_MAX, i2c->clocks); + + return ret; } static int mtk_i2c_remove(struct platform_device *pdev)