mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

serial: xuartps: Enable clocks in the pm disable case also 

When Power management is disabled then the clocks are not getting
enabled. This patch enables it for the !PM case also.
While at it also pm_runtime_set_active is called before
calling pm_runtime_enable.

Reported-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shubhrajyoti Datta 2017-04-06 12:27:41 +05:30 committed by Greg Kroah-Hartman
parent cade3580f7
commit ecfc5771ef
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/tty/serial/xilinx_uartps.c
View File

@ -1521,12 +1521,12 @@ static int cdns_uart_probe(struct platform_device *pdev)
return PTR_ERR(cdns_uart_data->uartclk);
}
rc = clk_prepare(cdns_uart_data->pclk);
rc = clk_prepare_enable(cdns_uart_data->pclk);
if (rc) {
dev_err(&pdev->dev, "Unable to enable pclk clock.\n");
return rc;
}
rc = clk_prepare(cdns_uart_data->uartclk);
rc = clk_prepare_enable(cdns_uart_data->uartclk);
if (rc) {
dev_err(&pdev->dev, "Unable to enable device clock.\n");
goto err_out_clk_dis_pclk;
@ -1580,8 +1580,8 @@ static int cdns_uart_probe(struct platform_device *pdev)
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, UART_AUTOSUSPEND_TIMEOUT);
pm_runtime_enable(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
rc = uart_add_one_port(&cdns_uart_uart_driver, port);
if (rc) {
@ -1601,9 +1601,9 @@ err_out_clk_disable:
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_dont_use_autosuspend(&pdev->dev);
clk_unprepare(cdns_uart_data->uartclk);
clk_disable_unprepare(cdns_uart_data->uartclk);
err_out_clk_dis_pclk:
clk_unprepare(cdns_uart_data->pclk);
clk_disable_unprepare(cdns_uart_data->pclk);
return rc;
}
@ -1627,8 +1627,8 @@ static int cdns_uart_remove(struct platform_device *pdev)
#endif
rc = uart_remove_one_port(&cdns_uart_uart_driver, port);
port->mapbase = 0;
clk_unprepare(cdns_uart_data->uartclk);
clk_unprepare(cdns_uart_data->pclk);
clk_disable_unprepare(cdns_uart_data->uartclk);
clk_disable_unprepare(cdns_uart_data->pclk);
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_dont_use_autosuspend(&pdev->dev);