[PATCH] rework reserved major handling
Several people have reported failures in dynamic major device number handling
due to the recent changes in there to avoid handing out the local/experimental
majors.
Rolf reports that this is due to a gcc-4.1.0 bug.
The patch refactors that code a lot in an attempt to provoke the compiler into
behaving.
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/char_dev.c b/fs/char_dev.c
index e6194e2..78ced72 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -6,6 +6,7 @@
#include <linux/init.h>
#include <linux/fs.h>
+#include <linux/kdev_t.h>
#include <linux/slab.h>
#include <linux/string.h>
@@ -108,12 +109,7 @@
/* temporary */
if (major == 0) {
for (i = ARRAY_SIZE(chrdevs)-1; i > 0; i--) {
- /*
- * Disallow the LANANA-assigned LOCAL/EXPERIMENTAL
- * majors
- */
- if ((60 <= i && i <= 63) || (120 <= i && i <= 127) ||
- (240 <= i && i <= 254))
+ if (is_lanana_major(i))
continue;
if (chrdevs[i] == NULL)
break;