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path: root/drivers/mfd/twl6040.c
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Diffstat (limited to 'drivers/mfd/twl6040.c')
-rw-r--r--drivers/mfd/twl6040.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c
index 75316fb33448..6e88f25832fb 100644
--- a/drivers/mfd/twl6040.c
+++ b/drivers/mfd/twl6040.c
@@ -661,6 +661,11 @@ static int twl6040_probe(struct i2c_client *client,
init_completion(&twl6040->ready);
twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV);
+ if (twl6040->rev < 0) {
+ dev_err(&client->dev, "Failed to read revision register: %d\n",
+ twl6040->rev);
+ goto gpio_err;
+ }
/* ERRATA: Automatic power-up is not possible in ES1.0 */
if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0)
@@ -703,7 +708,6 @@ static int twl6040_probe(struct i2c_client *client,
}
/* dual-access registers controlled by I2C only */
- twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL);
regmap_register_patch(twl6040->regmap, twl6040_patch,
ARRAY_SIZE(twl6040_patch));