From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Fri, 27 Mar 2015 09:56:09 +0000 (+0530)
Subject: staging: unisys: unregister chardev on error
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6bdb610142fc0433077e24bb36f90e7c52bcaded;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

staging: unisys: unregister chardev on error

after registering the major numbers if the cdev_add fails then we were
not releasing the major numbers. now we are doing that.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/unisys/visorchipset/file.c b/drivers/staging/unisys/visorchipset/file.c
index 39b19afa5169..5c5d35f10471 100644
--- a/drivers/staging/unisys/visorchipset/file.c
+++ b/drivers/staging/unisys/visorchipset/file.c
@@ -65,8 +65,10 @@ visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel)
 			return -1;
 	}
 	rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1);
-	if (rc  < 0)
+	if (rc < 0) {
+		unregister_chrdev_region(major_dev, 1);
 		return -1;
+	}
 	return 0;
 }