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mfd: arizona: Replace arizona_of_get_type() with device_get_match_data()

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Replace the custom arizona_of_get_type() function with the generic
device_get_match_data() helper. Besides being a nice cleanup this
also makes it easier to add support for binding to ACPI enumerated
devices.

While at it also fix a possible NULL pointer deref of the id
argument to the probe functions (this could happen on e.g. manual
driver binding through sysfs).

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Hans de Goede
2021-01-20 22:49:54 +01:00
committed by Lee Jones
parent 06e577b45d
commit 039da225d6
4 changed files with 12 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/mfd/arizona-core.c
View File

@@ -797,17 +797,6 @@ const struct dev_pm_ops arizona_pm_ops = {
EXPORT_SYMBOL_GPL(arizona_pm_ops); EXPORT_SYMBOL_GPL(arizona_pm_ops);
#ifdef CONFIG_OF #ifdef CONFIG_OF
unsigned long arizona_of_get_type(struct device *dev)
{
const struct of_device_id *id = of_match_device(arizona_of_match, dev);
if (id)
return (unsigned long)id->data;
else
return 0;
}
EXPORT_SYMBOL_GPL(arizona_of_get_type);
static int arizona_of_get_core_pdata(struct arizona *arizona) static int arizona_of_get_core_pdata(struct arizona *arizona)
{ {
struct arizona_pdata *pdata = &arizona->pdata; struct arizona_pdata *pdata = &arizona->pdata;

10
drivers/mfd/arizona-i2c.c
View File

@@ -23,14 +23,16 @@
static int arizona_i2c_probe(struct i2c_client *i2c, static int arizona_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id) const struct i2c_device_id *id)
{ {
const void *match_data;
struct arizona *arizona; struct arizona *arizona;
const struct regmap_config *regmap_config = NULL; const struct regmap_config *regmap_config = NULL;
unsigned long type; unsigned long type = 0;
int ret; int ret;
if (i2c->dev.of_node) match_data = device_get_match_data(&i2c->dev);
type = arizona_of_get_type(&i2c->dev); if (match_data)
else type = (unsigned long)match_data;
else if (id)
type = id->driver_data; type = id->driver_data;
switch (type) { switch (type) {

10
drivers/mfd/arizona-spi.c
View File

@@ -23,14 +23,16 @@
static int arizona_spi_probe(struct spi_device *spi) static int arizona_spi_probe(struct spi_device *spi)
{ {
const struct spi_device_id *id = spi_get_device_id(spi); const struct spi_device_id *id = spi_get_device_id(spi);
const void *match_data;
struct arizona *arizona; struct arizona *arizona;
const struct regmap_config *regmap_config = NULL; const struct regmap_config *regmap_config = NULL;
unsigned long type; unsigned long type = 0;
int ret; int ret;
if (spi->dev.of_node) match_data = device_get_match_data(&spi->dev);
type = arizona_of_get_type(&spi->dev); if (match_data)
else type = (unsigned long)match_data;
else if (id)
type = id->driver_data; type = id->driver_data;
switch (type) { switch (type) {

9
drivers/mfd/arizona.h
View File

@@ -50,13 +50,4 @@ int arizona_dev_exit(struct arizona *arizona);
int arizona_irq_init(struct arizona *arizona); int arizona_irq_init(struct arizona *arizona);
int arizona_irq_exit(struct arizona *arizona); int arizona_irq_exit(struct arizona *arizona);
#ifdef CONFIG_OF
unsigned long arizona_of_get_type(struct device *dev);
#else
static inline unsigned long arizona_of_get_type(struct device *dev)
{
return 0;
}
#endif
#endif #endif