99-com.rules: fix error invalid substitution type

fix below error:
/etc/udev/rules.d/99-com.rules:10 Invalid value "/bin/sh -c
'ALIASES=/proc/device-tree/aliases; if cmp -s $ALIASES/uart0
$ALIASES/serial0; then echo 0;elif cmp -s $ALIASES/uart0
$ALIASES/serial1; then echo 1; else exit 1; fi'" for PROGRAM (char 58:
invalid substitution type)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
(cherry picked from commit fb253346c2fe85f8fdd49e5a66dff04d8f2bd53e)
Signed-off-by: Pavel Zhukov <pavel.zhukov@huawei.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/recipes-core/udev/udev-rules-rpi/99-com.rules b/recipes-core/udev/udev-rules-rpi/99-com.rules
index 6bf019b..ddd1e17 100644
--- a/recipes-core/udev/udev-rules-rpi/99-com.rules
+++ b/recipes-core/udev/udev-rules-rpi/99-com.rules
@@ -1,8 +1,8 @@
 KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
         ALIASES=/proc/device-tree/aliases; \
-        if cmp -s $ALIASES/uart0 $ALIASES/serial0; then \
+        if cmp -s $$ALIASES/uart0 $$ALIASES/serial0; then \
                 echo 0;\
-        elif cmp -s $ALIASES/uart0 $ALIASES/serial1; then \
+        elif cmp -s $$ALIASES/uart0 $$ALIASES/serial1; then \
                 echo 1; \
         else \
                 exit 1; \
@@ -11,9 +11,9 @@ KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
 
 KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
         ALIASES=/proc/device-tree/aliases; \
-        if cmp -s $ALIASES/uart1 $ALIASES/serial0; then \
+        if cmp -s $$ALIASES/uart1 $$ALIASES/serial0; then \
                 echo 0; \
-        elif cmp -s $ALIASES/uart1 $ALIASES/serial1; then \
+        elif cmp -s $$ALIASES/uart1 $$ALIASES/serial1; then \
                 echo 1; \
         else \
                 exit 1; \