Signed-off-by: Anubhav Rakshit <anubhavrocks@xxxxxxxxx>
---
fs/char_dev.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/fs/char_dev.c b/fs/char_dev.c
index 038674a..f4c371a 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -199,7 +199,10 @@ int register_chrdev_region(dev_t from, unsigned
count, const char *name)
struct char_device_struct *cd;
dev_t to = from + count;
dev_t n, next;
-
+
+ if(unlikely(count == 0))
+ return -EINVAL;
+
for (n = from; n < to; n = next) {
next = MKDEV(MAJOR(n)+1, 0);
if (next > to)
--
--
Anubhav Rakshit
--
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