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Subject[PATCH] init/do_mounts.c: Print error code on mount failure
Date
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>
---
init/do_mounts.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/init/do_mounts.c b/init/do_mounts.c
index 2974c8b..0e93f92 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -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();
--
1.7.9.2


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