[PATCH] alsa-info.sh: include 1 line of dmesg context

[Wu Fengguang <fengguang.wu@intel.com>]

So as to include possible ALSA messages without the common keywords,
as well as be more confident on the completeness/coverage of the report. 

It also shows nice '--' separators between the dmesg ranges.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 utils/alsa-info.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- alsa-driver.orig/utils/alsa-info.sh
+++ alsa-driver/utils/alsa-info.sh
@@ -247,7 +247,7 @@ withdmesg() {
 	echo "!!ALSA/HDA dmesg" >> $FILE
 	echo "!!------------------" >> $FILE
 	echo "" >> $FILE
-	dmesg | grep -E 'ALSA|HDA|HDMI|sound|hda.codec|hda.intel' >> $FILE
+	dmesg | grep -C1 -E 'ALSA|HDA|HDMI|sound|hda.codec|hda.intel' >> $FILE
 	echo "" >> $FILE
 	echo "" >> $FILE
 }