From: David Ellingsworth <david@identd.dyndns.org>
To: linux-media@vger.kernel.org, klimov.linux@gmail.com
Subject: [RFC/RFT 03/10] radio-mr800: simplify error paths in usb probe callback
Date: Sat, 12 Sep 2009 10:49:12 -0400 [thread overview]
Message-ID: <4AABB4E8.7030507@gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 2257 bytes --]
From 0cdbd79a6e87a8a2862a6c1309c8fdf83c80ba61 Mon Sep 17 00:00:00 2001
From: David Ellingsworth <david@identd.dyndns.org>
Date: Sat, 12 Sep 2009 00:13:16 -0400
Subject: [PATCH 03/10] mr800: simplify error paths in usb probe callback
Signed-off-by: David Ellingsworth <david@identd.dyndns.org>
---
drivers/media/radio/radio-mr800.c | 27 ++++++++++++++++-----------
1 files changed, 16 insertions(+), 11 deletions(-)
diff --git a/drivers/media/radio/radio-mr800.c
b/drivers/media/radio/radio-mr800.c
index 3129692..d01b96c 100644
--- a/drivers/media/radio/radio-mr800.c
+++ b/drivers/media/radio/radio-mr800.c
@@ -689,30 +689,29 @@ static int usb_amradio_probe(struct usb_interface
*intf,
{
struct amradio_device *radio;
struct v4l2_device *v4l2_dev;
- int retval;
+ int retval = 0;
radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
if (!radio) {
dev_err(&intf->dev, "kmalloc for amradio_device failed\n");
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto err;
}
radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
if (!radio->buffer) {
dev_err(&intf->dev, "kmalloc for radio->buffer failed\n");
- kfree(radio);
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto err_nobuf;
}
v4l2_dev = &radio->v4l2_dev;
retval = v4l2_device_register(&intf->dev, v4l2_dev);
if (retval < 0) {
dev_err(&intf->dev, "couldn't register v4l2_device\n");
- kfree(radio->buffer);
- kfree(radio);
- return retval;
+ goto err_v4l2;
}
strlcpy(radio->videodev.name, v4l2_dev->name,
@@ -736,14 +735,20 @@ static int usb_amradio_probe(struct usb_interface
*intf,
radio_nr);
if (retval < 0) {
dev_err(&intf->dev, "could not register video device\n");
- v4l2_device_unregister(v4l2_dev);
- kfree(radio->buffer);
- kfree(radio);
- return -EIO;
+ goto err_vdev;
}
usb_set_intfdata(intf, radio);
return 0;
+
+err_vdev:
+ v4l2_device_unregister(v4l2_dev);
+err_v4l2:
+ kfree(radio->buffer);
+err_nobuf:
+ kfree(radio);
+err:
+ return retval;
}
static int __init amradio_init(void)
--
1.6.3.3
[-- Attachment #2: 0003-mr800-simplify-error-paths-in-usb-probe-callback.patch --]
[-- Type: text/x-diff, Size: 2050 bytes --]
>From 0cdbd79a6e87a8a2862a6c1309c8fdf83c80ba61 Mon Sep 17 00:00:00 2001
From: David Ellingsworth <david@identd.dyndns.org>
Date: Sat, 12 Sep 2009 00:13:16 -0400
Subject: [PATCH 03/10] mr800: simplify error paths in usb probe callback
Signed-off-by: David Ellingsworth <david@identd.dyndns.org>
---
drivers/media/radio/radio-mr800.c | 27 ++++++++++++++++-----------
1 files changed, 16 insertions(+), 11 deletions(-)
diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c
index 3129692..d01b96c 100644
--- a/drivers/media/radio/radio-mr800.c
+++ b/drivers/media/radio/radio-mr800.c
@@ -689,30 +689,29 @@ static int usb_amradio_probe(struct usb_interface *intf,
{
struct amradio_device *radio;
struct v4l2_device *v4l2_dev;
- int retval;
+ int retval = 0;
radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
if (!radio) {
dev_err(&intf->dev, "kmalloc for amradio_device failed\n");
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto err;
}
radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
if (!radio->buffer) {
dev_err(&intf->dev, "kmalloc for radio->buffer failed\n");
- kfree(radio);
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto err_nobuf;
}
v4l2_dev = &radio->v4l2_dev;
retval = v4l2_device_register(&intf->dev, v4l2_dev);
if (retval < 0) {
dev_err(&intf->dev, "couldn't register v4l2_device\n");
- kfree(radio->buffer);
- kfree(radio);
- return retval;
+ goto err_v4l2;
}
strlcpy(radio->videodev.name, v4l2_dev->name,
@@ -736,14 +735,20 @@ static int usb_amradio_probe(struct usb_interface *intf,
radio_nr);
if (retval < 0) {
dev_err(&intf->dev, "could not register video device\n");
- v4l2_device_unregister(v4l2_dev);
- kfree(radio->buffer);
- kfree(radio);
- return -EIO;
+ goto err_vdev;
}
usb_set_intfdata(intf, radio);
return 0;
+
+err_vdev:
+ v4l2_device_unregister(v4l2_dev);
+err_v4l2:
+ kfree(radio->buffer);
+err_nobuf:
+ kfree(radio);
+err:
+ return retval;
}
static int __init amradio_init(void)
--
1.6.3.3
reply other threads:[~2009-09-12 14:49 UTC|newest]
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