[yocto] [meta-raspberrypi][PATCH] 99-com.rules: fix error invalid substitution type

[Changqing Li]

From: Changqing Li <changqing...@windriver.com>

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...@windriver.com>
---
 recipes-core/udev/udev-rules-rpi/99-com.rules | 8 ++++----
 1 file 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; \
-- 
2.17.1


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