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Input: ibm-panel - use guard notation when acquiring spinlock

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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.

Reviewed-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240904044735.1047285-1-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov
2024-09-03 21:47:33 -07:00
parent 21f6b6b47c
commit 543429257d
1 changed files with 1 additions and 4 deletions
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5
drivers/input/misc/ibm-panel.c
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@@ -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;
}