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V4L/DVB (9539): dsbr100: add suspend and resume

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This patch adds support for suspend and resume methods in driver.
Without this kradio and gnomeradio crashes during resume.
Also .supports_autosuspend in usb_driver struct set equal to 0 to avoid
suspending of module if usb_autosuspend enabled.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Alexey Klimov 2008-11-08 00:40:46 -03:00 committed by Mauro Carvalho Chehab
parent f34253dfe6
commit 04e0ffbbdd
1 changed files with 41 additions and 4 deletions
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45
drivers/media/radio/dsbr100.c
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@ -131,6 +131,9 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
static void usb_dsbr100_disconnect(struct usb_interface *intf);
static int usb_dsbr100_open(struct inode *inode, struct file *file);
static int usb_dsbr100_close(struct inode *inode, struct file *file);
static int usb_dsbr100_suspend(struct usb_interface *intf,
pm_message_t message);
static int usb_dsbr100_resume(struct usb_interface *intf);
static int radio_nr = -1;
module_param(radio_nr, int, 0);
@ -157,10 +160,14 @@ MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table);
/* USB subsystem interface */
static struct usb_driver usb_dsbr100_driver = {
.name = "dsbr100",
.probe = usb_dsbr100_probe,
.disconnect = usb_dsbr100_disconnect,
.id_table = usb_dsbr100_device_table,
.name = "dsbr100",
.probe = usb_dsbr100_probe,
.disconnect = usb_dsbr100_disconnect,
.id_table = usb_dsbr100_device_table,
.suspend = usb_dsbr100_suspend,
.resume = usb_dsbr100_resume,
.reset_resume = usb_dsbr100_resume,
.supports_autosuspend = 0,
};
/* Low-level device interface begins here */
@ -448,6 +455,36 @@ static int usb_dsbr100_close(struct inode *inode, struct file *file)
return 0;
}
/* Suspend device - stop device. */
static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
{
struct dsbr100_device *radio = usb_get_intfdata(intf);
int retval;
retval = dsbr100_stop(radio);
if (retval == -1)
dev_warn(&intf->dev, "dsbr100_stop failed\n");
dev_info(&intf->dev, "going into suspend..\n");
return 0;
}
/* Resume device - start device. */
static int usb_dsbr100_resume(struct usb_interface *intf)
{
struct dsbr100_device *radio = usb_get_intfdata(intf);
int retval;
retval = dsbr100_start(radio);
if (retval == -1)
dev_warn(&intf->dev, "dsbr100_start failed\n");
dev_info(&intf->dev, "coming out of suspend..\n");
return 0;
}
/* File system interface */
static const struct file_operations usb_dsbr100_fops = {
.owner = THIS_MODULE,