staging: unisys: visorbus: add error handling visorbus_enable_channel_interrupt
Add error handling to visorbus_enable_channel_interrupt. Signed-off-by: David Kershner <david.kershner@unisys.com> Reviewed-by: Reviewed-by: Tim Sell <timothy.sell@unisys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
b90194d9bb
commit
5dca9b2944
|
@ -180,7 +180,7 @@ int visorbus_read_channel(struct visor_device *dev,
|
|||
int visorbus_write_channel(struct visor_device *dev,
|
||||
unsigned long offset, void *src,
|
||||
unsigned long nbytes);
|
||||
void visorbus_enable_channel_interrupts(struct visor_device *dev);
|
||||
int visorbus_enable_channel_interrupts(struct visor_device *dev);
|
||||
void visorbus_disable_channel_interrupts(struct visor_device *dev);
|
||||
|
||||
/* Levels of severity for diagnostic events, in order from lowest severity to
|
||||
|
|
|
@ -580,17 +580,17 @@ EXPORT_SYMBOL_GPL(visorbus_write_channel);
|
|||
* Currently we don't yet have a real interrupt, so for now we just call the
|
||||
* interrupt function periodically via a timer.
|
||||
*/
|
||||
void
|
||||
int
|
||||
visorbus_enable_channel_interrupts(struct visor_device *dev)
|
||||
{
|
||||
struct visor_driver *drv = to_visor_driver(dev->device.driver);
|
||||
|
||||
if (!drv->channel_interrupt) {
|
||||
dev_err(&dev->device, "%s no interrupt function!\n", __func__);
|
||||
return;
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
dev_start_periodic_work(dev);
|
||||
return dev_start_periodic_work(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(visorbus_enable_channel_interrupts);
|
||||
|
||||
|
|
Loading…
Reference in a new issue