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49 lines
1.5 KiB
Diff
49 lines
1.5 KiB
Diff
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From 6f3a5814c7aaea4176e0ac8b1ec6dc0a65aa2808 Mon Sep 17 00:00:00 2001
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From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
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Date: Sun, 22 May 2022 14:22:07 +0200
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Subject: [PATCH 09/16] i2c: mediatek: Fix an error handling path in
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mtk_i2c_probe()
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The clsk are prepared, enabled, then disabled. So if an error occurs after
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the disable step, they are still prepared.
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Add an error handling path to unprepare the clks in such a case, as already
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done in the .remove function.
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Fixes: 8b4fc246c3ff ("i2c: mediatek: Optimize master_xfer() and avoid circular locking")
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Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
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Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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Reviewed-by: Qii Wang <qii.wang@mediatek.com>
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Signed-off-by: Wolfram Sang <wsa@kernel.org>
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---
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drivers/i2c/busses/i2c-mt65xx.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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--- a/drivers/i2c/busses/i2c-mt65xx.c
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+++ b/drivers/i2c/busses/i2c-mt65xx.c
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@@ -1420,17 +1420,22 @@ static int mtk_i2c_probe(struct platform
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if (ret < 0) {
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dev_err(&pdev->dev,
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"Request I2C IRQ %d fail\n", irq);
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- return ret;
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+ goto err_bulk_unprepare;
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}
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i2c_set_adapdata(&i2c->adap, i2c);
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ret = i2c_add_adapter(&i2c->adap);
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if (ret)
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- return ret;
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+ goto err_bulk_unprepare;
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platform_set_drvdata(pdev, i2c);
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return 0;
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+
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+err_bulk_unprepare:
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+ clk_bulk_unprepare(I2C_MT65XX_CLK_MAX, i2c->clocks);
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+
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+ return ret;
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}
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static int mtk_i2c_remove(struct platform_device *pdev)
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