This is a note to let you know that I've just added the patch titled
power: supply: bq24190_charger: Install irq_handler_thread() at end of probe()
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
power-supply-bq24190_charger-install-irq_handler_thread-at-end-of-probe.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d62acc5ef0621463446091ebd7a345e06e9ab80c Mon Sep 17 00:00:00 2001
From: Liam Breck <liam@xxxxxxxxxxxxxxxxx>
Date: Wed, 18 Jan 2017 09:26:50 -0800
Subject: power: supply: bq24190_charger: Install irq_handler_thread() at end of probe()
From: Liam Breck <liam@xxxxxxxxxxxxxxxxx>
commit d62acc5ef0621463446091ebd7a345e06e9ab80c upstream.
The device specific data is not fully initialized on
request_threaded_irq(). This may cause a crash when the IRQ handler
tries to reference them.
Fix the issue by installing IRQ handler at the end of the probe.
Fixes: d7bf353fd0aa3 ("bq24190_charger: Add support for TI BQ24190 Battery Charger")
Signed-off-by: Liam Breck <kernel@xxxxxxxxxxxxxxxxx>
Acked-by: Mark Greer <mgreer@xxxxxxxxxxxxxxx>
Acked-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/power/bq24190_charger.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)
--- a/drivers/power/bq24190_charger.c
+++ b/drivers/power/bq24190_charger.c
@@ -1392,22 +1392,13 @@ static int bq24190_probe(struct i2c_clie
return -EINVAL;
}
- ret = devm_request_threaded_irq(dev, bdi->irq, NULL,
- bq24190_irq_handler_thread,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- "bq24190-charger", bdi);
- if (ret < 0) {
- dev_err(dev, "Can't set up irq handler\n");
- goto out1;
- }
-
pm_runtime_enable(dev);
pm_runtime_resume(dev);
ret = bq24190_hw_init(bdi);
if (ret < 0) {
dev_err(dev, "Hardware init failed\n");
- goto out2;
+ goto out1;
}
charger_cfg.drv_data = bdi;
@@ -1418,7 +1409,7 @@ static int bq24190_probe(struct i2c_clie
if (IS_ERR(bdi->charger)) {
dev_err(dev, "Can't register charger\n");
ret = PTR_ERR(bdi->charger);
- goto out2;
+ goto out1;
}
battery_cfg.drv_data = bdi;
@@ -1427,24 +1418,34 @@ static int bq24190_probe(struct i2c_clie
if (IS_ERR(bdi->battery)) {
dev_err(dev, "Can't register battery\n");
ret = PTR_ERR(bdi->battery);
- goto out3;
+ goto out2;
}
ret = bq24190_sysfs_create_group(bdi);
if (ret) {
dev_err(dev, "Can't create sysfs entries\n");
+ goto out3;
+ }
+
+ ret = devm_request_threaded_irq(dev, bdi->irq, NULL,
+ bq24190_irq_handler_thread,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ "bq24190-charger", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
goto out4;
}
return 0;
out4:
- power_supply_unregister(bdi->battery);
+ bq24190_sysfs_remove_group(bdi);
out3:
- power_supply_unregister(bdi->charger);
+ power_supply_unregister(bdi->battery);
out2:
- pm_runtime_disable(dev);
+ power_supply_unregister(bdi->charger);
out1:
+ pm_runtime_disable(dev);
if (bdi->gpio_int)
gpio_free(bdi->gpio_int);
Patches currently in stable-queue which might be from liam@xxxxxxxxxxxxxxxxx are
queue-4.4/power-supply-bq24190_charger-handle-fault-before-status-on-interrupt.patch
queue-4.4/power-supply-bq24190_charger-call-power_supply_changed-for-relevant-component.patch
queue-4.4/power-supply-bq24190_charger-install-irq_handler_thread-at-end-of-probe.patch
queue-4.4/power-supply-bq24190_charger-call-set_mode_host-on-pm_resume.patch
queue-4.4/power-supply-bq24190_charger-don-t-read-fault-register-outside-irq_handle_thread.patch
queue-4.4/power-supply-bq24190_charger-fix-irq-trigger-to-irqf_trigger_falling.patch