]> git.karo-electronics.de Git - karo-tx-linux.git/commit
serial: imx: remove unbalanced clk_prepare
authorEduardo Valentin <edubezval@gmail.com>
Tue, 11 Aug 2015 17:21:20 +0000 (10:21 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 15 Aug 2015 00:23:25 +0000 (17:23 -0700)
commit9e7b399d6528eac33a6fbfceb2b92af209c3454d
tree0d6a624fd74f7312c44ded789a8523c8e0235e05
parenteafb9eea7622d765effb1a06f8cf5eb31fa018f6
serial: imx: remove unbalanced clk_prepare

The current code attempts to prepare clk_per and clk_ipg
before using the device. However, the result is an extra
prepare call on each clock. Here is the output of uart
clocks (only uart enabled and used as console):

$  grep uart /sys/kernel/debug/clk/clk_summary
 uart_serial           1            2    80000000          0 0
       uart           1            2    66000000          0 0

This patch balances the calls of prepares. The result is:

$  grep uart /sys/kernel/debug/clk/clk_summary
 uart_serial           1            1    80000000          0 0
       uart           1            1    66000000          0 0

Cc: Fabio Estevam <festevam@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/imx.c