mfd: da9052: Avoid setting read_flag_mask for da9052-i2c driver
Current code init regmap with &da9052_regmap_config for both da9052-spi and
da9052-i2c drivers. da9052-spi sets the read_flag_mask.
The same setting may be applied for da9052-i2c if da9052-spi driver is loaded
first because they actually use the same regmap_config setting.
Fix this issue by using a local variable for regmap_config in da9052-spi driver,
so the settings in spi driver won't impact the settings in i2c driver.
Also makes da9052_regmap_config const to avoid similar issue.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
index e8af816..52a0c2f 100644
--- a/drivers/mfd/da9052-core.c
+++ b/drivers/mfd/da9052-core.c
@@ -522,7 +522,7 @@
},
};
-struct regmap_config da9052_regmap_config = {
+const struct regmap_config da9052_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
diff --git a/drivers/mfd/da9052-spi.c b/drivers/mfd/da9052-spi.c
index 17666b4..45ae0b7 100644
--- a/drivers/mfd/da9052-spi.c
+++ b/drivers/mfd/da9052-spi.c
@@ -23,6 +23,7 @@
static int da9052_spi_probe(struct spi_device *spi)
{
+ struct regmap_config config;
int ret;
const struct spi_device_id *id = spi_get_device_id(spi);
struct da9052 *da9052;
@@ -40,10 +41,10 @@
spi_set_drvdata(spi, da9052);
- da9052_regmap_config.read_flag_mask = 1;
- da9052_regmap_config.write_flag_mask = 0;
+ config = da9052_regmap_config;
+ config.read_flag_mask = 1;
- da9052->regmap = devm_regmap_init_spi(spi, &da9052_regmap_config);
+ da9052->regmap = devm_regmap_init_spi(spi, &config);
if (IS_ERR(da9052->regmap)) {
ret = PTR_ERR(da9052->regmap);
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h
index bba65f5..c18a4c1 100644
--- a/include/linux/mfd/da9052/da9052.h
+++ b/include/linux/mfd/da9052/da9052.h
@@ -211,7 +211,7 @@
int da9052_device_init(struct da9052 *da9052, u8 chip_id);
void da9052_device_exit(struct da9052 *da9052);
-extern struct regmap_config da9052_regmap_config;
+extern const struct regmap_config da9052_regmap_config;
int da9052_irq_init(struct da9052 *da9052);
int da9052_irq_exit(struct da9052 *da9052);