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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Tong Zhang <ztong0001@gmail.com>,
        Takashi Iwai <tiwai@suse.de>
Subject: [PATCH 4.9 40/71] ALSA: ca0106: fix error code handling
Date:   Fri, 11 Sep 2020 14:46:24 +0200
Message-Id: <20200911122506.925427008@linuxfoundation.org>
In-Reply-To: <20200911122504.928931589@linuxfoundation.org>
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From: Tong Zhang <ztong0001@gmail.com>

commit ee0761d1d8222bcc5c86bf10849dc86cf008557c upstream.

snd_ca0106_spi_write() returns 1 on error, snd_ca0106_pcm_power_dac()
is returning the error code directly, and the caller is expecting an
negative error code

Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200824224541.1260307-1-ztong0001@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/ca0106/ca0106_main.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/sound/pci/ca0106/ca0106_main.c
+++ b/sound/pci/ca0106/ca0106_main.c
@@ -551,7 +551,8 @@ static int snd_ca0106_pcm_power_dac(stru
 		else
 			/* Power down */
 			chip->spi_dac_reg[reg] |= bit;
-		return snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]);
+		if (snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]) != 0)
+			return -ENXIO;
 	}
 	return 0;
 }