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| H A D | imx.c | 9e7b399d Tue Aug 11 12:21:20 CDT 2015 Eduardo Valentin <edubezval@gmail.com> 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>
9e7b399d Tue Aug 11 12:21:20 CDT 2015 Eduardo Valentin <edubezval@gmail.com> 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>
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