[PATCH] Revert "dracut-functions: $_x should exist, no need to test."

[Chao Wang <chaowang@xxxxxxxxxx>]

This reverts commit b2d225a6698607bbcb73b6e6d12fbfc5be014102.

When there's no /sys/dev/block/$2/slaves/*/dev/ exists, $_x will
be assigned with '/sys/dev/block/$2/slaves/*/dev/', this is invalid.
That commit will lead to some warn msg like:
cat: /sys/dev/block/8:16/slaves/*/dev: No such file or directory
cat: /sys/dev/block/8:32/slaves/*/dev: No such file or directory
---
 dracut-functions.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dracut-functions.sh b/dracut-functions.sh
index a299bbb..2ad8f4a 100755
--- a/dracut-functions.sh
+++ b/dracut-functions.sh
@@ -423,6 +423,7 @@ check_block_and_slaves() {
     fi
     [[ -d /sys/dev/block/$2/slaves ]] || return 1
     for _x in /sys/dev/block/$2/slaves/*/dev; do
+        [[ -f $_x ]] || continue
         check_block_and_slaves $1 $(cat "$_x") && return 0
     done
     return 1
-- 
1.7.11.3

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