[03/10] ASoC: cs35l33: Minor error paths fixups

Message ID 20210510131357.17170-4-ckeepax@opensource.cirrus.com
State New
Headers show
Series
  • Tidy up device ID reading on legacy Cirrus parts
Related show

Commit Message

Charles Keepax May 10, 2021, 1:13 p.m.
Correct some unchecked re-allocations of ret whilst reading the device
ID and ensure the hardware state is returned to off on the error
paths.

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
 sound/soc/codecs/cs35l33.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

Patch

diff --git a/sound/soc/codecs/cs35l33.c b/sound/soc/codecs/cs35l33.c
index 7ad7b733af9b6..6f6b3c0c88b78 100644
--- a/sound/soc/codecs/cs35l33.c
+++ b/sound/soc/codecs/cs35l33.c
@@ -34,6 +34,7 @@ 
 #include <linux/of_irq.h>
 
 #include "cs35l33.h"
+#include "cirrus_legacy.h"
 
 #define CS35L33_BOOT_DELAY	50
 
@@ -1190,12 +1191,12 @@  static int cs35l33_i2c_probe(struct i2c_client *i2c_client,
 	regcache_cache_only(cs35l33->regmap, false);
 
 	/* initialize codec */
-	ret = regmap_read(cs35l33->regmap, CS35L33_DEVID_AB, &reg);
-	devid = (reg & 0xFF) << 12;
-	ret = regmap_read(cs35l33->regmap, CS35L33_DEVID_CD, &reg);
-	devid |= (reg & 0xFF) << 4;
-	ret = regmap_read(cs35l33->regmap, CS35L33_DEVID_E, &reg);
-	devid |= (reg & 0xF0) >> 4;
+	devid = cirrus_read_device_id(cs35l33->regmap, CS35L33_DEVID_AB);
+	if (devid < 0) {
+		ret = devid;
+		dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
+		goto err_enable;
+	}
 
 	if (devid != CS35L33_CHIP_ID) {
 		dev_err(&i2c_client->dev,
@@ -1242,6 +1243,8 @@  static int cs35l33_i2c_probe(struct i2c_client *i2c_client,
 	return 0;
 
 err_enable:
+	gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
+
 	regulator_bulk_disable(cs35l33->num_core_supplies,
 			       cs35l33->core_supplies);