diff options
author | Felipe Balbi <balbi@ti.com> | 2015-11-11 16:11:01 (GMT) |
---|---|---|
committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-11-25 11:15:44 (GMT) |
commit | 51c4cfef568fe8ebac06761ed7c754fac1f9b5a8 (patch) | |
tree | a6e1eb502275cde0c9b3589459d7edd70ca8c81f /drivers | |
parent | 1ec218373b8ebda821aec00bb156a9c94fad9cd4 (diff) | |
download | linux-51c4cfef568fe8ebac06761ed7c754fac1f9b5a8.tar.xz |
rtc: ds1307: fix kernel splat due to wakeup irq handling
Since commit 3fffd1283927 ("i2c: allow specifying
separate wakeup interrupt in device tree") we have
automatic wakeup irq support for i2c devices. That
commit missed the fact that rtc-1307 had its own
wakeup irq handling and ended up introducing a
kernel splat for at least Beagle x15 boards.
Fix that by reverting original commit _and_ passing
correct interrupt names on DTS so i2c-core can
choose correct IRQ as wakeup.
Now that we have automatic wakeirq support, we can
revert the original commit which did it manually.
Fixes the following warning:
[ 10.346582] WARNING: CPU: 1 PID: 263 at linux/drivers/base/power/wakeirq.c:43 dev_pm_attach_wake_irq+0xbc/0xd4()
[ 10.359244] rtc-ds1307 2-006f: wake irq already initialized
Cc: Tony Lindgren <tony@atomide.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/rtc/rtc-ds1307.c | 36 |
1 files changed, 3 insertions, 33 deletions
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 188006c..3258368 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -15,9 +15,6 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/module.h> -#include <linux/of_device.h> -#include <linux/of_irq.h> -#include <linux/pm_wakeirq.h> #include <linux/rtc/ds1307.h> #include <linux/rtc.h> #include <linux/slab.h> @@ -117,7 +114,6 @@ struct ds1307 { #define HAS_ALARM 1 /* bit 1 == irq claimed */ struct i2c_client *client; struct rtc_device *rtc; - int wakeirq; s32 (*read_block_data)(const struct i2c_client *client, u8 command, u8 length, u8 *values); s32 (*write_block_data)(const struct i2c_client *client, u8 command, @@ -1146,8 +1142,6 @@ read_rtc: } if (want_irq) { - struct device_node *node = client->dev.of_node; - err = devm_request_threaded_irq(&client->dev, client->irq, NULL, irq_handler, IRQF_SHARED | IRQF_ONESHOT, @@ -1155,34 +1149,13 @@ read_rtc: if (err) { client->irq = 0; dev_err(&client->dev, "unable to request IRQ!\n"); - goto no_irq; - } - - set_bit(HAS_ALARM, &ds1307->flags); - dev_dbg(&client->dev, "got IRQ %d\n", client->irq); - - /* Currently supported by OF code only! */ - if (!node) - goto no_irq; - - err = of_irq_get(node, 1); - if (err <= 0) { - if (err == -EPROBE_DEFER) - goto exit; - goto no_irq; - } - ds1307->wakeirq = err; + } else { - err = dev_pm_set_dedicated_wake_irq(&client->dev, - ds1307->wakeirq); - if (err) { - dev_err(&client->dev, "unable to setup wakeIRQ %d!\n", - err); - goto exit; + set_bit(HAS_ALARM, &ds1307->flags); + dev_dbg(&client->dev, "got IRQ %d\n", client->irq); } } -no_irq: if (chip->nvram_size) { ds1307->nvram = devm_kzalloc(&client->dev, @@ -1226,9 +1199,6 @@ static int ds1307_remove(struct i2c_client *client) { struct ds1307 *ds1307 = i2c_get_clientdata(client); - if (ds1307->wakeirq) - dev_pm_clear_wake_irq(&client->dev); - if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags)) sysfs_remove_bin_file(&client->dev.kobj, ds1307->nvram); |