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SubjectRe: [PATCH 12/14] HID: i2c-hid: remove extra .irq field in struct i2c_hid
On Tue,  4 Dec 2012 16:27:53 +0100, Benjamin Tissoires wrote:
> There is no point in keeping the irq in i2c_hid as it's already
> there in client.
>
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
> ---
> drivers/hid/i2c-hid/i2c-hid.c | 17 ++++++-----------
> 1 file changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
> index 2b49929..bea4b13 100644
> --- a/drivers/hid/i2c-hid/i2c-hid.c
> +++ b/drivers/hid/i2c-hid/i2c-hid.c
> @@ -136,8 +136,6 @@ struct i2c_hid {
>
> unsigned long flags; /* device flags */
>
> - int irq; /* the interrupt line irq */
> -
> wait_queue_head_t wait; /* For waiting the interrupt */
> };
>
> @@ -737,8 +735,6 @@ static int __devinit i2c_hid_init_irq(struct i2c_client *client)
> return ret;
> }
>
> - ihid->irq = client->irq;
> -
> return 0;
> }
>
> @@ -841,12 +837,12 @@ static int __devinit i2c_hid_probe(struct i2c_client *client,
>
> ret = i2c_hid_init_irq(client);
> if (ret < 0)
> - goto err;
> + goto err_irq;

Looks wrong. If i2c_hid_init_irq() failed, the irq couldn't be requested so you don't want to free it.

>
> hid = hid_allocate_device();
> if (IS_ERR(hid)) {
> ret = PTR_ERR(hid);
> - goto err;
> + goto err_irq;
> }
>
> ihid->hid = hid;
> @@ -876,10 +872,10 @@ static int __devinit i2c_hid_probe(struct i2c_client *client,
> err_mem_free:
> hid_destroy_device(hid);
>
> -err:
> - if (ihid->irq)
> - free_irq(ihid->irq, ihid);
> +err_irq:
> + free_irq(client->irq, ihid);
>
> +err:
> i2c_hid_free_buffers(ihid);
> kfree(ihid);
> return ret;
> @@ -904,10 +900,9 @@ static int __devexit i2c_hid_remove(struct i2c_client *client)
> static int i2c_hid_suspend(struct device *dev)
> {
> struct i2c_client *client = to_i2c_client(dev);
> - struct i2c_hid *ihid = i2c_get_clientdata(client);
>
> if (device_may_wakeup(&client->dev))
> - enable_irq_wake(ihid->irq);
> + enable_irq_wake(client->irq);
>
> /* Save some power */
> i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);


--
Jean Delvare


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