Patch "ALSA: spi: Add check for clk_enable()" has been added to the 5.17-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    ALSA: spi: Add check for clk_enable()

to the 5.17-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     alsa-spi-add-check-for-clk_enable.patch
and it can be found in the queue-5.17 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 51fa0aa624bd8e885ae4ff6ee65b83f5130be0fd
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date:   Mon Feb 28 10:28:39 2022 +0800

    ALSA: spi: Add check for clk_enable()
    
    [ Upstream commit ca1697eb09208f0168d94b88b72f57505339cbe5 ]
    
    As the potential failure of the clk_enable(),
    it should be better to check it and return error
    if fails.
    
    Fixes: 3568459a5113 ("ALSA: at73c213: manage SSC clock")
    Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220228022839.3547266-1-jiasheng@xxxxxxxxxxx
    Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c
index 76c0e37a838c..8a2da6b1012e 100644
--- a/sound/spi/at73c213.c
+++ b/sound/spi/at73c213.c
@@ -218,7 +218,9 @@ static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream)
 	runtime->hw = snd_at73c213_playback_hw;
 	chip->substream = substream;
 
-	clk_enable(chip->ssc->clk);
+	err = clk_enable(chip->ssc->clk);
+	if (err)
+		return err;
 
 	return 0;
 }
@@ -776,7 +778,9 @@ static int snd_at73c213_chip_init(struct snd_at73c213 *chip)
 		goto out;
 
 	/* Enable DAC master clock. */
-	clk_enable(chip->board->dac_clk);
+	retval = clk_enable(chip->board->dac_clk);
+	if (retval)
+		goto out;
 
 	/* Initialize at73c213 on SPI bus. */
 	retval = snd_at73c213_write_reg(chip, DAC_RST, 0x04);
@@ -889,7 +893,9 @@ static int snd_at73c213_dev_init(struct snd_card *card,
 	chip->card = card;
 	chip->irq = -1;
 
-	clk_enable(chip->ssc->clk);
+	retval = clk_enable(chip->ssc->clk);
+	if (retval)
+		return retval;
 
 	retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip);
 	if (retval) {
@@ -1008,7 +1014,9 @@ static int snd_at73c213_remove(struct spi_device *spi)
 	int retval;
 
 	/* Stop playback. */
-	clk_enable(chip->ssc->clk);
+	retval = clk_enable(chip->ssc->clk);
+	if (retval)
+		goto out;
 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
 	clk_disable(chip->ssc->clk);
 
@@ -1088,9 +1096,16 @@ static int snd_at73c213_resume(struct device *dev)
 {
 	struct snd_card *card = dev_get_drvdata(dev);
 	struct snd_at73c213 *chip = card->private_data;
+	int retval;
 
-	clk_enable(chip->board->dac_clk);
-	clk_enable(chip->ssc->clk);
+	retval = clk_enable(chip->board->dac_clk);
+	if (retval)
+		return retval;
+	retval = clk_enable(chip->ssc->clk);
+	if (retval) {
+		clk_disable(chip->board->dac_clk);
+		return retval;
+	}
 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
 
 	return 0;