Add error handling to visorbus_enable_channel_interrupt.
Signed-off-by: David Kershner <[email protected]>
Reviewed-by: Reviewed-by: Tim Sell <[email protected]>
---
drivers/staging/unisys/include/visorbus.h | 2 +-
drivers/staging/unisys/visorbus/visorbus_main.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/unisys/include/visorbus.h
b/drivers/staging/unisys/include/visorbus.h
index 6582939..de06355 100644
--- a/drivers/staging/unisys/include/visorbus.h
+++ b/drivers/staging/unisys/include/visorbus.h
@@ -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
diff --git a/drivers/staging/unisys/visorbus/visorbus_main.c
b/drivers/staging/unisys/visorbus/visorbus_main.c
index c97f32f..bf0f191 100644
--- a/drivers/staging/unisys/visorbus/visorbus_main.c
+++ b/drivers/staging/unisys/visorbus/visorbus_main.c
@@ -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);
--
git-series 0.9.1
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