From: Jiri Kosina <jkosina@suse.cz>
Date: Wed, 27 Mar 2013 16:29:18 +0000 (+0100)
Subject: HID: hidraw: warn if userspace headers are outdated
X-Git-Url: https://rtime.felk.cvut.cz/gitweb/linux-imx.git/commitdiff_plain/f37130533f68711fd6bae2c79950b8e72002bad6

HID: hidraw: warn if userspace headers are outdated

Put a warning into sample hidraw code in samples/hidraw/hid-example.c
in case the userspace headers are missing the necessary defines and
need to be updated.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

diff --git a/samples/hidraw/hid-example.c b/samples/hidraw/hid-example.c
index 816e2dcda7ca..512a7e50bcae 100644
--- a/samples/hidraw/hid-example.c
+++ b/samples/hidraw/hid-example.c
@@ -17,10 +17,9 @@
 /*
  * Ugly hack to work around failing compilation on systems that don't
  * yet populate new version of hidraw.h to userspace.
- *
- * If you need this, please have your distro update the kernel headers.
  */
 #ifndef HIDIOCSFEATURE
+#warning Please have your distro update the userspace kernel headers
 #define HIDIOCSFEATURE(len)    _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
 #define HIDIOCGFEATURE(len)    _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
 #endif