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i2c: Clear client->irq in i2c_device_remove 

The IRQ will be mapped in i2c_device_probe only if client->irq is zero and
i2c_device_remove does not clear this. When rebinding an I2C device,
whos IRQ provider has also been rebound this means that an IRQ mapping
will never be created, causing the I2C device to fail to acquire its
IRQ. Fix this issue by clearing client->irq in i2c_device_remove,
forcing i2c_device_probe to lookup the mapping again.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Charles Keepax 2018-10-19 09:59:58 +01:00 committed by Wolfram Sang
parent b9bb3fdf4e
commit 6f108dd70d
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/i2c-core-base.c
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@ -430,6 +430,8 @@ static int i2c_device_remove(struct device *dev)
dev_pm_clear_wake_irq(&client->dev);
device_init_wakeup(&client->dev, false);
client->irq = 0;
return status;
}