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@xxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
Changes in v2:
- New patch in v2 of this patchset
---
drivers/mfd/arizona-core.c | 11 -----------
drivers/mfd/arizona-i2c.c | 10 ++++++----
drivers/mfd/arizona-spi.c | 10 ++++++----
drivers/mfd/arizona.h | 9 ---------
4 files changed, 12 insertions(+), 28 deletions(-)
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 000cb82023e3..75f1bc671d59 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -797,17 +797,6 @@ const struct dev_pm_ops arizona_pm_ops = {
EXPORT_SYMBOL_GPL(arizona_pm_ops);
#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)
{
struct arizona_pdata *pdata = &arizona->pdata;
diff --git a/drivers/mfd/arizona-i2c.c b/drivers/mfd/arizona-i2c.c
index 2a4a3a164d0a..5e83b730c4ce 100644
--- a/drivers/mfd/arizona-i2c.c
+++ b/drivers/mfd/arizona-i2c.c
@@ -23,14 +23,16 @@
static int arizona_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
+ const void *match_data;
struct arizona *arizona;
const struct regmap_config *regmap_config = NULL;
- unsigned long type;
+ unsigned long type = 0;
int ret;
- if (i2c->dev.of_node)
- type = arizona_of_get_type(&i2c->dev);
- else
+ match_data = device_get_match_data(&i2c->dev);
+ if (match_data)
+ type = (unsigned long)match_data;
+ else if (id)
type = id->driver_data;
switch (type) {
diff --git a/drivers/mfd/arizona-spi.c b/drivers/mfd/arizona-spi.c
index 704f214d2614..798b88295c77 100644
--- a/drivers/mfd/arizona-spi.c
+++ b/drivers/mfd/arizona-spi.c
@@ -23,14 +23,16 @@
static int arizona_spi_probe(struct spi_device *spi)
{
const struct spi_device_id *id = spi_get_device_id(spi);
+ const void *match_data;
struct arizona *arizona;
const struct regmap_config *regmap_config = NULL;
- unsigned long type;
+ unsigned long type = 0;
int ret;
- if (spi->dev.of_node)
- type = arizona_of_get_type(&spi->dev);
- else
+ match_data = device_get_match_data(&spi->dev);
+ if (match_data)
+ type = (unsigned long)match_data;
+ else if (id)
type = id->driver_data;
switch (type) {
diff --git a/drivers/mfd/arizona.h b/drivers/mfd/arizona.h
index 995efc6d7f32..801cbbcd71cb 100644
--- a/drivers/mfd/arizona.h
+++ b/drivers/mfd/arizona.h
@@ -50,13 +50,4 @@ int arizona_dev_exit(struct arizona *arizona);
int arizona_irq_init(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
--
2.28.0
