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| author | Arnd Bergmann <arnd@arndb.de> | 2017-07-21 18:17:45 +0200 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2017-08-31 15:45:55 +0200 |
| commit | fefcfb9935be0208ff522563239f11a04f98c27d (patch) | |
| tree | 13364815524f1c956b20c0f85453f14b142a2dbd /drivers/xen/pvcalls-back.c | |
| parent | xen: remove not used trace functions (diff) | |
| download | linux-fefcfb9935be0208ff522563239f11a04f98c27d.tar.xz linux-fefcfb9935be0208ff522563239f11a04f98c27d.zip | |
xen/pvcalls: use WARN_ON(1) instead of __WARN()
__WARN() is an internal helper that is only available on
some architectures, but causes a build error e.g. on ARM64
in some configurations:
drivers/xen/pvcalls-back.c: In function 'set_backend_state':
drivers/xen/pvcalls-back.c:1097:5: error: implicit declaration of function '__WARN' [-Werror=implicit-function-declaration]
Unfortunately, there is no equivalent of BUG() that takes no
arguments, but WARN_ON(1) is commonly used in other drivers
and works on all configurations.
Fixes: 7160378206b2 ("xen/pvcalls: xenbus state handling")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen/pvcalls-back.c')
| -rw-r--r-- | drivers/xen/pvcalls-back.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c index 3201a0c5dbcf..b209cd44bb8d 100644 --- a/drivers/xen/pvcalls-back.c +++ b/drivers/xen/pvcalls-back.c @@ -1098,7 +1098,7 @@ static void set_backend_state(struct xenbus_device *dev, xenbus_switch_state(dev, XenbusStateClosing); break; default: - __WARN(); + WARN_ON(1); } break; case XenbusStateInitWait: @@ -1113,7 +1113,7 @@ static void set_backend_state(struct xenbus_device *dev, xenbus_switch_state(dev, XenbusStateClosing); break; default: - __WARN(); + WARN_ON(1); } break; case XenbusStateConnected: @@ -1127,7 +1127,7 @@ static void set_backend_state(struct xenbus_device *dev, xenbus_switch_state(dev, XenbusStateClosing); break; default: - __WARN(); + WARN_ON(1); } break; case XenbusStateClosing: @@ -1138,11 +1138,11 @@ static void set_backend_state(struct xenbus_device *dev, xenbus_switch_state(dev, XenbusStateClosed); break; default: - __WARN(); + WARN_ON(1); } break; default: - __WARN(); + WARN_ON(1); } } } |