From: Stephen Warren <swarren@nvidia.com>
Date: Fri, 8 Jun 2012 12:28:17 +0000 (+0000)
Subject: fdt: send all dtc output to stderr
X-Git-Tag: v2012.07-rc1~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=58e22f8a15adec39d24d060180d76a4cbe86a04b;p=platform%2Fkernel%2Fu-boot.git

fdt: send all dtc output to stderr

Commit 896bbb5 "fdt: avoid bad MAKEALL status" added logic to capture
the result code from dtc by echoing $? to stdout and capturing it using
$(). However, dtc emits some diagnostics to stderr and some to stdout.
The diagnostics send to stdout ended up getting captured via $() rather
than being echo'd to the user. This caused those diagnostics to be passed
to the exit command, which would then fail with the following cryptic
error message:

    /bin/sh: line 1: exit: too many arguments

Solve this by redirecting all dtc output to stderr so that $() does not
capture it. This allows the user to see the actual error message from dtc.

Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: albert.u.boot@aribaud.net
Cc: Tom Warren <twarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
---

diff --git a/dts/Makefile b/dts/Makefile
index 914e479..402dfe1 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -51,7 +51,7 @@ $(DT_BIN): $(TOPDIR)/board/$(VENDOR)/dts/$(DEVICE_TREE).dts
 		{ { $(DTC) -R 4 -p 0x1000 -O dtb -o ${DT_BIN} - 2>&1 ; \
 		    echo $$? >&3 ; } | \
 		  grep -v '^DTC: dts->dtb  on file' ; \
-	        } 3>&1 ) ; \
+	        } 3>&1 1>&2 ) ; \
 	exit $$rc
 
 process_lds = \