From dd17a009e3adf2dc0d75a4c664086f661401e9ff Mon Sep 17 00:00:00 2001 From: Andrea Adami Date: Sat, 16 Sep 2017 01:35:50 +0200 Subject: sysvinit-inittab: start_getty: Cleanup comments Signed-off-by: Andrea Adami Signed-off-by: Ross Burton --- .../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 f0d9f8cbcf..e15ae35f90 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 ] -- cgit 1.2.3-korg