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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-05-22 19:41:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-12 16:42:26 +0200 |
| commit | 41a8c75974d023866a9346f061631b3fe0aea279 (patch) | |
| tree | bb940e79b4e388fd8636b3c1299761f8274b315f | |
| parent | ffa25b652aac1b4a9010954e9e88661e658785cf (diff) | |
| download | linux-41a8c75974d023866a9346f061631b3fe0aea279.tar.gz linux-41a8c75974d023866a9346f061631b3fe0aea279.tar.bz2 linux-41a8c75974d023866a9346f061631b3fe0aea279.zip | |
dmaengine: lgm: Fix an error handling path in intel_ldma_probe()
commit 1dbe67b9faea0bc340cce894018076679c16cb71 upstream.
ldma_clk_disable() calls both:
clk_disable_unprepare(d->core_clk);
reset_control_assert(d->rst);
So, should devm_reset_control_get_optional() fail, core_clk should not
be prepare_enable'd before it, otherwise it will never be
disable_unprepare'd.
Reorder the code to handle the error handling path as expected.
Fixes: 32d31c79a1a4 ("dmaengine: Add Intel LGM SoC DMA support.")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/18504549bc4d2b62a72a02cb22a2e4d8e6a58720.1653241224.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/dma/lgm/lgm-dma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/dma/lgm/lgm-dma.c b/drivers/dma/lgm/lgm-dma.c index efe8bd3a0e2a..9b9184f964be 100644 --- a/drivers/dma/lgm/lgm-dma.c +++ b/drivers/dma/lgm/lgm-dma.c @@ -1593,11 +1593,12 @@ static int intel_ldma_probe(struct platform_device *pdev) d->core_clk = devm_clk_get_optional(dev, NULL); if (IS_ERR(d->core_clk)) return PTR_ERR(d->core_clk); - clk_prepare_enable(d->core_clk); d->rst = devm_reset_control_get_optional(dev, NULL); if (IS_ERR(d->rst)) return PTR_ERR(d->rst); + + clk_prepare_enable(d->core_clk); reset_control_deassert(d->rst); ret = devm_add_action_or_reset(dev, ldma_clk_disable, d); |