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rtc: rv8803: fix handling return value of i2c_smbus_read_byte_data

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The function can return negative values, so its result should
be assigned to signed variable.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Andrzej Hajda
2015-12-10 08:55:33 +01:00
committed by Alexandre Belloni
parent ed13d89b08
commit 68c85f2916
1 changed files with 1 additions and 1 deletions
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drivers/rtc/rtc-rv8803.c
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@@ -61,7 +61,7 @@ static irqreturn_t rv8803_handle_irq(int irq, void *dev_id)
struct i2c_client *client = dev_id; struct i2c_client *client = dev_id;
struct rv8803_data *rv8803 = i2c_get_clientdata(client); struct rv8803_data *rv8803 = i2c_get_clientdata(client);
unsigned long events = 0; unsigned long events = 0;
u8 flags; int flags;
spin_lock(&rv8803->flags_lock); spin_lock(&rv8803->flags_lock);