Using guard notation makes the code more compact and error handling
more robust by ensuring that locks are released in all code paths
when control leaves critical section.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
drivers/input/misc/ibm-panel.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/input/misc/ibm-panel.c b/drivers/input/misc/ibm-panel.c
index 867ac7aa10d2..aa48f62d7ea0 100644
--- a/drivers/input/misc/ibm-panel.c
+++ b/drivers/input/misc/ibm-panel.c
@@ -77,12 +77,11 @@ static void ibm_panel_process_command(struct ibm_panel *panel)
static int ibm_panel_i2c_slave_cb(struct i2c_client *client,
enum i2c_slave_event event, u8 *val)
{
- unsigned long flags;
struct ibm_panel *panel = i2c_get_clientdata(client);
dev_dbg(&panel->input->dev, "event: %u data: %02x\n", event, *val);
- spin_lock_irqsave(&panel->lock, flags);
+ guard(spinlock_irqsave)(&panel->lock);
switch (event) {
case I2C_SLAVE_STOP:
@@ -114,8 +113,6 @@ static int ibm_panel_i2c_slave_cb(struct i2c_client *client,
break;
}
- spin_unlock_irqrestore(&panel->lock, flags);
-
return 0;
}
--
2.46.0.469.g59c65b2a67-goog
