diff options
| author | Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> | 2016-07-04 01:04:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-28 03:45:19 -0400 |
| commit | 33fe037cdcac990dffabac804982c9f2e1551888 (patch) | |
| tree | d8eb5c42e51763ae75a94f9929636b9e106aa5a0 | |
| parent | bf07d2609f57a56e9a401c4c10cb83b7eca44bcc (diff) | |
platform: don't return 0 from platform_get_irq[_byname]() on error
commit e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af upstream.
of_irq_get[_byname]() return 0 iff irq_create_of_mapping() call fails.
Returning both error code and 0 on failure is a sign of a misdesigned API,
it makes the failure check unnecessarily complex and error prone. We should
rely on the platform IRQ resource in this case, not return 0, especially
as 0 can be a valid IRQ resource too...
Fixes: aff008ad813c ("platform_get_irq: Revert to platform_get_resource if of_irq_get fails")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/base/platform.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 6482d47deb50..d5572295cad3 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -97,7 +97,7 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) int ret; ret = of_irq_get(dev->dev.of_node, num); - if (ret >= 0 || ret == -EPROBE_DEFER) + if (ret > 0 || ret == -EPROBE_DEFER) return ret; } @@ -175,7 +175,7 @@ int platform_get_irq_byname(struct platform_device *dev, const char *name) int ret; ret = of_irq_get_byname(dev->dev.of_node, name); - if (ret >= 0 || ret == -EPROBE_DEFER) + if (ret > 0 || ret == -EPROBE_DEFER) return ret; } |