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power: supply: sbs-battery: Cleanup removal of chip->pdata

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There where still a few lingering references to pdata after commit
power: supply: sbs-battery: simplify DT parsing.

Remove pdata from struct·sbs_info and conditional checks to ser if this
was set from the i2c read / write functions.
Instead of call max in each function for incrementing poll_retry_count
do it once in the probe function.
Fixup null pointer dereference in to pdata in sbs_external_power_changed.
Change retry counts to u32 to avoid need for max.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Phil Reid 2016-09-20 09:01:12 +08:00 committed by Sebastian Reichel
parent bb1e41ba32
commit 389958bb6b
2 changed files with 11 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/power/supply/sbs-battery.c
View File

@ -163,14 +163,13 @@ static enum power_supply_property sbs_properties[] = {
struct sbs_info {
struct i2c_client *client;
struct power_supply *power_supply;
struct sbs_platform_data *pdata;
bool is_present;
struct gpio_desc *gpio_detect;
bool enable_detection;
int last_state;
int poll_time;
int i2c_retry_count;
int poll_retry_count;
u32 i2c_retry_count;
u32 poll_retry_count;
struct delayed_work work;
int ignore_changes;
};
@ -185,8 +184,7 @@ static int sbs_read_word_data(struct i2c_client *client, u8 address)
s32 ret = 0;
int retries = 1;
if (chip->pdata)
retries = max(chip->i2c_retry_count + 1, 1);
retries = chip->i2c_retry_count;
while (retries > 0) {
ret = i2c_smbus_read_word_data(client, address);
@ -213,10 +211,8 @@ static int sbs_read_string_data(struct i2c_client *client, u8 address,
int retries_length = 1, retries_block = 1;
u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
if (chip->pdata) {
retries_length = max(chip->i2c_retry_count + 1, 1);
retries_block = max(chip->i2c_retry_count + 1, 1);
}
retries_length = chip->i2c_retry_count;
retries_block = chip->i2c_retry_count;
/* Adapter needs to support these two functions */
if (!i2c_check_functionality(client->adapter,
@ -280,8 +276,7 @@ static int sbs_write_word_data(struct i2c_client *client, u8 address,
s32 ret = 0;
int retries = 1;
if (chip->pdata)
retries = max(chip->i2c_retry_count + 1, 1);
retries = chip->i2c_retry_count;
while (retries > 0) {
ret = i2c_smbus_write_word_data(client, address,
@ -708,7 +703,7 @@ static void sbs_external_power_changed(struct power_supply *psy)
cancel_delayed_work_sync(&chip->work);
schedule_delayed_work(&chip->work, HZ);
chip->poll_time = chip->pdata->poll_retry_count;
chip->poll_time = chip->poll_retry_count;
}
static void sbs_delayed_work(struct work_struct *work)
@ -792,7 +787,7 @@ static int sbs_probe(struct i2c_client *client,
rc = of_property_read_u32(client->dev.of_node, "sbs,i2c-retry-count",
&chip->i2c_retry_count);
if (rc)
chip->i2c_retry_count = 1;
chip->i2c_retry_count = 0;
rc = of_property_read_u32(client->dev.of_node, "sbs,poll-retry-count",
&chip->poll_retry_count);
@ -803,6 +798,7 @@ static int sbs_probe(struct i2c_client *client,
chip->poll_retry_count = pdata->poll_retry_count;
chip->i2c_retry_count = pdata->i2c_retry_count;
}
chip->i2c_retry_count = chip->i2c_retry_count + 1;
chip->gpio_detect = devm_gpiod_get_optional(&client->dev,
"sbs,battery-detect", GPIOD_IN);

4
include/linux/power/sbs-battery.h
View File

@ -31,8 +31,8 @@
* external change notification
*/
struct sbs_platform_data {
int i2c_retry_count;
int poll_retry_count;
u32 i2c_retry_count;
u32 poll_retry_count;
};
#endif