5.4-stable review patch. If anyone has any objections, please let me know.
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From: Minghao Chi chi.minghao@zte.com.cn
[ Upstream commit d96a89407e5f682d1cb22569d91784506c784863 ]
Using pm_runtime_resume_and_get is more appropriate for simplifing code
Reported-by: Zeal Robot zealci@zte.com.cn Signed-off-by: Minghao Chi chi.minghao@zte.com.cn Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com [ skulkarni: Minor changes in hunk #3/12 wrt the mainline commit ] Stable-dep-of: 47c29d692129 ("power: supply: bq24190: Fix use after free bug in bq24190_remove due to race condition") Signed-off-by: Shubham Kulkarni skulkarni@mvista.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/power/supply/bq24190_charger.c | 63 +++++++++++---------------------- 1 file changed, 21 insertions(+), 42 deletions(-)
--- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -448,11 +448,9 @@ static ssize_t bq24190_sysfs_show(struct if (!info) return -EINVAL;
- ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - pm_runtime_put_noidle(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) return ret; - }
ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v); if (ret) @@ -483,11 +481,9 @@ static ssize_t bq24190_sysfs_store(struc if (ret < 0) return ret;
- ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - pm_runtime_put_noidle(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) return ret; - }
ret = bq24190_write_mask(bdi, info->reg, info->mask, info->shift, v); if (ret) @@ -506,10 +502,9 @@ static int bq24190_set_charge_mode(struc struct bq24190_dev_info *bdi = rdev_get_drvdata(dev); int ret;
- ret = pm_runtime_get_sync(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); - pm_runtime_put_noidle(bdi->dev); return ret; }
@@ -539,10 +534,9 @@ static int bq24190_vbus_is_enabled(struc int ret; u8 val;
- ret = pm_runtime_get_sync(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); - pm_runtime_put_noidle(bdi->dev); return ret; }
@@ -1083,11 +1077,9 @@ static int bq24190_charger_get_property(
dev_dbg(bdi->dev, "prop: %d\n", psp);
- ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - pm_runtime_put_noidle(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) return ret; - }
switch (psp) { case POWER_SUPPLY_PROP_CHARGE_TYPE: @@ -1157,11 +1149,9 @@ static int bq24190_charger_set_property(
dev_dbg(bdi->dev, "prop: %d\n", psp);
- ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - pm_runtime_put_noidle(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) return ret; - }
switch (psp) { case POWER_SUPPLY_PROP_ONLINE: @@ -1431,11 +1421,9 @@ static int bq24190_battery_get_property( dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n"); dev_dbg(bdi->dev, "prop: %d\n", psp);
- ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - pm_runtime_put_noidle(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) return ret; - }
switch (psp) { case POWER_SUPPLY_PROP_STATUS: @@ -1479,11 +1467,9 @@ static int bq24190_battery_set_property( dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n"); dev_dbg(bdi->dev, "prop: %d\n", psp);
- ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - pm_runtime_put_noidle(bdi->dev); + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) return ret; - }
switch (psp) { case POWER_SUPPLY_PROP_ONLINE: @@ -1637,10 +1623,9 @@ static irqreturn_t bq24190_irq_handler_t int error;
bdi->irq_event = true; - error = pm_runtime_get_sync(bdi->dev); + error = pm_runtime_resume_and_get(bdi->dev); if (error < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); - pm_runtime_put_noidle(bdi->dev); return IRQ_NONE; } bq24190_check_status(bdi); @@ -1860,11 +1845,9 @@ static int bq24190_remove(struct i2c_cli struct bq24190_dev_info *bdi = i2c_get_clientdata(client); int error;
- error = pm_runtime_get_sync(bdi->dev); - if (error < 0) { + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); - pm_runtime_put_noidle(bdi->dev); - }
bq24190_register_reset(bdi); if (bdi->battery) @@ -1913,11 +1896,9 @@ static __maybe_unused int bq24190_pm_sus struct bq24190_dev_info *bdi = i2c_get_clientdata(client); int error;
- error = pm_runtime_get_sync(bdi->dev); - if (error < 0) { + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); - pm_runtime_put_noidle(bdi->dev); - }
bq24190_register_reset(bdi);
@@ -1938,11 +1919,9 @@ static __maybe_unused int bq24190_pm_res bdi->f_reg = 0; bdi->ss_reg = BQ24190_REG_SS_VBUS_STAT_MASK; /* impossible state */
- error = pm_runtime_get_sync(bdi->dev); - if (error < 0) { + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); - pm_runtime_put_noidle(bdi->dev); - }
bq24190_register_reset(bdi); bq24190_set_config(bdi);