Commit c69e3c3a authored Jun 25, 2015 by Vishnu Pratap Singh Committed by Linus Torvalds Jun 25, 2015

init/do_mounts.c: add create_dev() failure log



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 printk in this case.  So I have added the log in case it fails to
create the root device.  It will help in debugging.

[akpm@linux-foundation.org: simplify printk(), use pr_emerg(), display errno]
Signed-off-by: Vishnu Pratap Singh <vishnu.ps@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Dan Ehrenberg <dehrenberg@chromium.org>
Cc: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent bffacb91

init/do_mounts.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -533,8 +533,13 @@ void __init mount_root(void)
		}
		#endif
		#ifdef CONFIG_BLOCK
		create_dev("/dev/root", ROOT_DEV);
		{
		int err = create_dev("/dev/root", ROOT_DEV);

		if (err < 0)
		pr_emerg("Failed to create /dev/root: %d\n", err);
		mount_block_root("/dev/root", root_mountflags);
		}
		#endif
		}

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