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Commit 5dca9b29 authored by David Kershner's avatar David Kershner Committed by Greg Kroah-Hartman
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staging: unisys: visorbus: add error handling visorbus_enable_channel_interrupt 



Add error handling to visorbus_enable_channel_interrupt.

Signed-off-by: default avatarDavid Kershner <david.kershner@unisys.com>
Reviewed-by: default avatarReviewed-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b90194d9

drivers/staging/unisys/include/visorbus.h

+1 −1
Original line number Diff line number Diff line
@@ -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

drivers/staging/unisys/visorbus/visorbus_main.c

+3 −3
Original line number Diff line number Diff line
@@ -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);