Commit 04e0ffbb authored by Alexey Klimov's avatar Alexey Klimov Committed by Mauro Carvalho Chehab

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

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: default avatarAlexey Klimov <klimov.linux@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent f34253df
...@@ -131,6 +131,9 @@ static int usb_dsbr100_probe(struct usb_interface *intf, ...@@ -131,6 +131,9 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
static void usb_dsbr100_disconnect(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_open(struct inode *inode, struct file *file);
static int usb_dsbr100_close(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; static int radio_nr = -1;
module_param(radio_nr, int, 0); module_param(radio_nr, int, 0);
...@@ -161,6 +164,10 @@ static struct usb_driver usb_dsbr100_driver = { ...@@ -161,6 +164,10 @@ static struct usb_driver usb_dsbr100_driver = {
.probe = usb_dsbr100_probe, .probe = usb_dsbr100_probe,
.disconnect = usb_dsbr100_disconnect, .disconnect = usb_dsbr100_disconnect,
.id_table = usb_dsbr100_device_table, .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 */ /* Low-level device interface begins here */
...@@ -448,6 +455,36 @@ static int usb_dsbr100_close(struct inode *inode, struct file *file) ...@@ -448,6 +455,36 @@ static int usb_dsbr100_close(struct inode *inode, struct file *file)
return 0; 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 */ /* File system interface */
static const struct file_operations usb_dsbr100_fops = { static const struct file_operations usb_dsbr100_fops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
......
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