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path: root/linux/drivers/media/radio/radio-mr800.c
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Diffstat (limited to 'linux/drivers/media/radio/radio-mr800.c')
-rw-r--r--linux/drivers/media/radio/radio-mr800.c36
1 files changed, 25 insertions, 11 deletions
diff --git a/linux/drivers/media/radio/radio-mr800.c b/linux/drivers/media/radio/radio-mr800.c
index 4aa51a282..caa71501a 100644
--- a/linux/drivers/media/radio/radio-mr800.c
+++ b/linux/drivers/media/radio/radio-mr800.c
@@ -378,13 +378,15 @@ static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+ int retval;
/* safety check */
if (radio->removed)
return -EIO;
radio->curfreq = f->frequency;
- if (amradio_setfreq(radio, radio->curfreq) < 0)
+ retval = amradio_setfreq(radio, radio->curfreq);
+ if (retval < 0)
amradio_dev_warn(&radio->videodev->dev,
"set frequency failed\n");
return 0;
@@ -443,6 +445,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+ int retval;
/* safety check */
if (radio->removed)
@@ -451,13 +454,15 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value) {
- if (amradio_stop(radio) < 0) {
+ retval = amradio_stop(radio);
+ if (retval < 0) {
amradio_dev_warn(&radio->videodev->dev,
"amradio_stop failed\n");
return -1;
}
} else {
- if (amradio_start(radio) < 0) {
+ retval = amradio_start(radio);
+ if (retval < 0) {
amradio_dev_warn(&radio->videodev->dev,
"amradio_start failed\n");
return -1;
@@ -508,20 +513,24 @@ static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
static int usb_amradio_open(struct file *file)
{
struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+ int retval;
lock_kernel();
radio->users = 1;
radio->muted = 1;
- if (amradio_start(radio) < 0) {
+ retval = amradio_start(radio);
+ if (retval < 0) {
amradio_dev_warn(&radio->videodev->dev,
"radio did not start up properly\n");
radio->users = 0;
unlock_kernel();
return -EIO;
}
- if (amradio_setfreq(radio, radio->curfreq) < 0)
+
+ retval = amradio_setfreq(radio, radio->curfreq);
+ if (retval < 0)
amradio_dev_warn(&radio->videodev->dev,
"set frequency failed\n");
@@ -554,8 +563,10 @@ static int usb_amradio_close(struct file *file)
static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message)
{
struct amradio_device *radio = usb_get_intfdata(intf);
+ int retval;
- if (amradio_stop(radio) < 0)
+ retval = amradio_stop(radio);
+ if (retval < 0)
dev_warn(&intf->dev, "amradio_stop failed\n");
dev_info(&intf->dev, "going into suspend..\n");
@@ -567,8 +578,10 @@ static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message)
static int usb_amradio_resume(struct usb_interface *intf)
{
struct amradio_device *radio = usb_get_intfdata(intf);
+ int retval;
- if (amradio_start(radio) < 0)
+ retval = amradio_start(radio);
+ if (retval < 0)
dev_warn(&intf->dev, "amradio_start failed\n");
dev_info(&intf->dev, "coming out of suspend..\n");
@@ -619,16 +632,16 @@ static struct video_device amradio_videodev_template = {
.release = usb_amradio_device_release,
};
-/* check if the device is present and register with v4l and
-usb if it is */
+/* check if the device is present and register with v4l and usb if it is */
static int usb_amradio_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct amradio_device *radio;
+ int retval;
radio = kmalloc(sizeof(struct amradio_device), GFP_KERNEL);
- if (!(radio))
+ if (!radio)
return -ENOMEM;
radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
@@ -657,7 +670,8 @@ static int usb_amradio_probe(struct usb_interface *intf,
mutex_init(&radio->lock);
video_set_drvdata(radio->videodev, radio);
- if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr)) {
+ retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr);
+ if (retval < 0) {
dev_warn(&intf->dev, "could not register video device\n");
video_device_release(radio->videodev);
kfree(radio->buffer);