linux-kernel - Re: [PATCH 07/14] HID: i2c-hid: fix return paths

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LNX.2.00.1212051105090.17055@pobox.suse.cz>
Date:	Wed, 5 Dec 2012 11:05:14 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Jean Delvare <khali@...ux-fr.org>, linux-input@...r.kernel.org,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/14] HID: i2c-hid: fix return paths

On Tue, 4 Dec 2012, Benjamin Tissoires wrote:

> Forwards appropriate return values.
> As noone use the error returned by i2c_hid_get_input, let's make it
> returning void.
> 
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...il.com>

Applied.

> ---
>  drivers/hid/i2c-hid/i2c-hid.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
> index 4452611..d6fdb3e 100644
> --- a/drivers/hid/i2c-hid/i2c-hid.c
> +++ b/drivers/hid/i2c-hid/i2c-hid.c
> @@ -245,7 +245,7 @@ static int i2c_hid_get_report(struct i2c_client *client, u8 reportType,
>  	if (ret) {
>  		dev_err(&client->dev,
>  			"failed to retrieve report from device.\n");
> -		return -EINVAL;
> +		return ret;
>  	}
>  
>  	return 0;
> @@ -290,7 +290,7 @@ static int i2c_hid_set_report(struct i2c_client *client, u8 reportType,
>  		reportType, args, args_len, NULL, 0);
>  	if (ret) {
>  		dev_err(&client->dev, "failed to set a report to device.\n");
> -		return -EINVAL;
> +		return ret;
>  	}
>  
>  	return data_len;
> @@ -334,7 +334,7 @@ static int i2c_hid_hwreset(struct i2c_client *client)
>  	return 0;
>  }
>  
> -static int i2c_hid_get_input(struct i2c_hid *ihid)
> +static void i2c_hid_get_input(struct i2c_hid *ihid)
>  {
>  	int ret, ret_size;
>  	int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);
> @@ -342,11 +342,11 @@ static int i2c_hid_get_input(struct i2c_hid *ihid)
>  	ret = i2c_master_recv(ihid->client, ihid->inbuf, size);
>  	if (ret != size) {
>  		if (ret < 0)
> -			return ret;
> +			return;
>  
>  		dev_err(&ihid->client->dev, "%s: got %d data instead of %d\n",
>  			__func__, ret, size);
> -		return ret;
> +		return;
>  	}
>  
>  	ret_size = ihid->inbuf[0] | ihid->inbuf[1] << 8;
> @@ -355,13 +355,13 @@ static int i2c_hid_get_input(struct i2c_hid *ihid)
>  		/* host or device initiated RESET completed */
>  		if (test_and_clear_bit(I2C_HID_RESET_PENDING, &ihid->flags))
>  			wake_up(&ihid->wait);
> -		return 0;
> +		return;
>  	}
>  
>  	if (ret_size > size) {
>  		dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
>  			__func__, size, ret_size);
> -		return -EIO;
> +		return;
>  	}
>  
>  	i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf);
> @@ -370,7 +370,7 @@ static int i2c_hid_get_input(struct i2c_hid *ihid)
>  		hid_input_report(ihid->hid, HID_INPUT_REPORT, ihid->inbuf + 2,
>  				ret_size - 2, 1);
>  
> -	return 0;
> +	return;
>  }
>  
>  static irqreturn_t i2c_hid_irq(int irq, void *dev_id)
> @@ -430,8 +430,10 @@ static void i2c_hid_init_reports(struct hid_device *hid)
>  	struct i2c_hid *ihid = i2c_get_clientdata(client);
>  	u8 *inbuf = kzalloc(ihid->bufsize, GFP_KERNEL);
>  
> -	if (!inbuf)
> +	if (!inbuf) {
> +		dev_err(&client->dev, "can not retrieve initial reports\n");
>  		return;
> +	}
>  
>  	list_for_each_entry(report,
>  		&hid->report_enum[HID_INPUT_REPORT].report_list, list)
> @@ -715,9 +717,7 @@ static int i2c_hid_hidinput_input_event(struct input_dev *dev,
>  		return -1;
>  	}
>  
> -	hid_set_field(field, offset, value);
> -
> -	return 0;
> +	return hid_set_field(field, offset, value);
>  }
>  
>  static struct hid_ll_driver i2c_hid_ll_driver = {
> -- 
> 1.8.0.1
> 

-- 
Jiri Kosina
SUSE Labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/