lkml.org 
[lkml]   [2016]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] fbdev: fbmem: implement error handling in fbmem_init()
Date
fbmem_init() ignores all errors, while fbmem_exit() does not
check if deallocating resources are valid.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
---
drivers/video/fbdev/core/fbmem.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 4e73b6f6b1c0..76c1ad96fb37 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1854,17 +1854,31 @@ EXPORT_SYMBOL(fb_set_suspend);
static int __init
fbmem_init(void)
{
- proc_create("fb", 0, NULL, &fb_proc_fops);
+ int ret;
+
+ if (!proc_create("fb", 0, NULL, &fb_proc_fops))
+ return -ENOMEM;

- if (register_chrdev(FB_MAJOR,"fb",&fb_fops))
+ ret = register_chrdev(FB_MAJOR, "fb", &fb_fops);
+ if (ret) {
printk("unable to get major %d for fb devs\n", FB_MAJOR);
+ goto err_chrdev;
+ }

fb_class = class_create(THIS_MODULE, "graphics");
if (IS_ERR(fb_class)) {
- printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class));
+ ret = PTR_ERR(fb_class);
+ pr_warn("Unable to create fb class; errno = %d\n", ret);
fb_class = NULL;
+ goto err_class;
}
return 0;
+
+err_class:
+ unregister_chrdev(FB_MAJOR, "fb");
+err_chrdev:
+ remove_proc_entry("fb", NULL);
+ return ret;
}

#ifdef MODULE
--
1.9.1
\
 
 \ /
  Last update: 2016-05-03 04:41    [W:0.073 / U:4.852 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site