HID: hidraw: fix samples miscompilation

On systems where userspace doesn't have new hidraw.h populated to /usr/include, the hidraw sample won't compile as it's missing the new ioctl defitions. Introduce temporary ugly workaround to define the ioctls "manually" in such cases, just to avoid miscompilation in allmodconfig cases. Reported-by: Stephen Rothwell <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
josf · Apr 8, 2011 · cb3e85f · cb3e85f
1 parent 1a978c5
commit cb3e85f
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/samples/hidraw/hid-example.c b/samples/hidraw/hid-example.c
@@ -14,6 +14,17 @@
 #include <linux/input.h>
 #include <linux/hidraw.h>
 
+/*
+ * 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
+#define HIDIOCSFEATURE(len)    _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
+#define HIDIOCGFEATURE(len)    _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
+#endif
+
 /* Unix */
 #include <sys/ioctl.h>
 #include <sys/types.h>