[oe-commits] [openembedded-core] 04/20: sysvinit-inittab: start_getty: Cleanup comments

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rpurdie pushed a commit to branch master
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commit dd17a009e3adf2dc0d75a4c664086f661401e9ff
Author: Andrea Adami <andrea.adami at gmail.com>
AuthorDate: Sat Sep 16 01:35:50 2017 +0200

    sysvinit-inittab: start_getty: Cleanup comments
    
    Signed-off-by: Andrea Adami <andrea.adami at gmail.com>
    Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 .../sysvinit/sysvinit-inittab/start_getty          | 26 +++++++++++-----------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty
index f0d9f8c..e15ae35 100644
--- a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty
+++ b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty
@@ -1,16 +1,16 @@
 #!/bin/sh
-####################################################################################
-# This script is use to automatic start serial console once power up.
-# Script enhancement has been done base on Bug YOCTO 10844.
-# Configuration can be done in meta/conf/machine/*.conf variable SERIAL_CONSOLES.
-# Most of the information is retrieve from /proc virtual filesystem which
-# contain all the runtime system information (eg. system memory, device mount, etc).
-####################################################################################
+###############################################################################
+# This script is used to automatically set up the serial console(s) on startup.
+# The variable SERIAL_CONSOLES can be set in meta/conf/machine/*.conf.
+# Script enhancement has been done based on Bug YOCTO #10844.
+# Most of the information is retrieved from /proc virtual filesystem containing
+# all the runtime system information (eg. system memory, device mount, etc).
+###############################################################################
 
 # Get active serial filename.
 active_serial=$(grep "serial" /proc/tty/drivers | cut -d/ -f1 | sed "s/ *$//")
 
-# Re-phrase input parameter from ttyS target index (ttyS1, ttyS2, ttyAMA0, etc).
+# Rephrase input parameter from ttyS target index (ttyS1, ttyS2, ttyAMA0, etc).
 runtime_tty=$(echo $2 | grep -oh '[0-9]')
 
 # Backup $IFS.
@@ -19,14 +19,14 @@ DEFAULT_IFS=$IFS
 IFS="$(printf '\n\t')"
 
 for line in $active_serial; do
-	# File is availability, file content current active serial target index.
+	# Check we have the file containing current active serial target index.
 	if [ -e "/proc/tty/driver/$line" ]
         then
-		# File content a lot of unknown serial. We use -v to remove all unmatch and get left off.
-		# Tail use to avoid 1st line included into the filter because 1st line is file description.
-		activetty=$(grep -v "unknown" "/proc/tty/driver/$line" | tail -n +2 | grep -oh "^\s*\S*[0-9]")
+		# Remove all unknown entries and discard the first line (desc).
+		activetty=$(grep -v "unknown" "/proc/tty/driver/$line" \
+			    | tail -n +2 | grep -oh "^\s*\S*[0-9]")
 		for active in $activetty; do
-			# Check if both index is match then proceed to enable the serial console.
+			# If indexes do match then enable the serial console.
 			if [ $active -eq $runtime_tty ]
 			then
 				if [ -c /dev/$2 ]

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