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init/do_mounts.c: print error code on mount failure

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Printing the error code makes it easier to debug the cause of a mount
failure.  For example I had the problem that the root file system could
not be mounted read-writeable because my SD card was write-protected.
Without an error code it looks like the SD card was not detected at all.

Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bernhard Walle 2012-03-23 15:02:28 -07:00 committed by Linus Torvalds
parent 8595c539f0
commit 0e0cb892a8
1 changed files with 2 additions and 2 deletions
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4
init/do_mounts.c
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@ -373,8 +373,8 @@ retry:
#ifdef CONFIG_BLOCK
__bdevname(ROOT_DEV, b);
#endif
printk("VFS: Cannot open root device \"%s\" or %s\n",
root_device_name, b);
printk("VFS: Cannot open root device \"%s\" or %s: error %d\n",
root_device_name, b, err);
printk("Please append a correct \"root=\" boot option; here are the available partitions:\n");
printk_all_partitions();