Messages in this thread Patch in this message | | | From | Vishnu Pratap Singh <> | Subject | [PATCH] init/do_mounts: Add create_dev() failure log | Date | Fri, 22 May 2015 18:07:54 +0530 |
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if create_dev() function fails to create the root mount device (/dev/root), then it goes to panic as root device not found but there is no check/log present in case of failure, So i have added the log in case it fails to create the root device. It will help in debugging.
Signed-off-by: Vishnu Pratap Singh <vishnu.ps@samsung.com> --- init/do_mounts.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/init/do_mounts.h b/init/do_mounts.h index f5b978a..40c85e9 100644 --- a/init/do_mounts.h +++ b/init/do_mounts.h @@ -15,8 +15,12 @@ extern int root_mountflags; static inline int create_dev(char *name, dev_t dev) { + int ret; sys_unlink(name); - return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); + ret = sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); + if(ret < 0) + printk(KERN_ERR " Failed to create %s device !! err: %d\n", name, ret); + return ret; } #if BITS_PER_LONG == 32 -- 1.7.9.5
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