linux-kernel - Re: [PATCH 53/61] tty: serial: simplify getting .drvdata

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Date:   Fri, 20 Apr 2018 08:46:13 +0000
From:   Patrice CHOTARD <patrice.chotard@...com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        Michal Simek <michal.simek@...inx.com>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 53/61] tty: serial: simplify getting .drvdata

Hi Wolfram

On 04/19/2018 04:06 PM, Wolfram Sang wrote:
> We should get drvdata from struct device directly. Going via
> platform_device is an unneeded step back and forth.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> ---
> 
> Build tested only. buildbot is happy. Please apply individually.
> 
>   drivers/tty/serial/imx.c              | 18 ++++++------------
>   drivers/tty/serial/qcom_geni_serial.c |  6 ++----
>   drivers/tty/serial/st-asc.c           |  6 ++----
>   drivers/tty/serial/xilinx_uartps.c    |  6 ++----
>   4 files changed, 12 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
> index 91f3a1a5cb7f..f370c1cf4f27 100644
> --- a/drivers/tty/serial/imx.c
> +++ b/drivers/tty/serial/imx.c
> @@ -2408,8 +2408,7 @@ static void imx_uart_enable_wakeup(struct imx_port *sport, bool on)
>   
>   static int imx_uart_suspend_noirq(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct imx_port *sport = platform_get_drvdata(pdev);
> +	struct imx_port *sport = dev_get_drvdata(dev);
>   
>   	imx_uart_save_context(sport);
>   
> @@ -2420,8 +2419,7 @@ static int imx_uart_suspend_noirq(struct device *dev)
>   
>   static int imx_uart_resume_noirq(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct imx_port *sport = platform_get_drvdata(pdev);
> +	struct imx_port *sport = dev_get_drvdata(dev);
>   	int ret;
>   
>   	ret = clk_enable(sport->clk_ipg);
> @@ -2435,8 +2433,7 @@ static int imx_uart_resume_noirq(struct device *dev)
>   
>   static int imx_uart_suspend(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct imx_port *sport = platform_get_drvdata(pdev);
> +	struct imx_port *sport = dev_get_drvdata(dev);
>   	int ret;
>   
>   	uart_suspend_port(&imx_uart_uart_driver, &sport->port);
> @@ -2454,8 +2451,7 @@ static int imx_uart_suspend(struct device *dev)
>   
>   static int imx_uart_resume(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct imx_port *sport = platform_get_drvdata(pdev);
> +	struct imx_port *sport = dev_get_drvdata(dev);
>   
>   	/* disable wakeup from i.MX UART */
>   	imx_uart_enable_wakeup(sport, false);
> @@ -2470,8 +2466,7 @@ static int imx_uart_resume(struct device *dev)
>   
>   static int imx_uart_freeze(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct imx_port *sport = platform_get_drvdata(pdev);
> +	struct imx_port *sport = dev_get_drvdata(dev);
>   
>   	uart_suspend_port(&imx_uart_uart_driver, &sport->port);
>   
> @@ -2480,8 +2475,7 @@ static int imx_uart_freeze(struct device *dev)
>   
>   static int imx_uart_thaw(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct imx_port *sport = platform_get_drvdata(pdev);
> +	struct imx_port *sport = dev_get_drvdata(dev);
>   
>   	uart_resume_port(&imx_uart_uart_driver, &sport->port);
>   
> diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
> index 65ff669373d4..66558d42d980 100644
> --- a/drivers/tty/serial/qcom_geni_serial.c
> +++ b/drivers/tty/serial/qcom_geni_serial.c
> @@ -1085,8 +1085,7 @@ static int qcom_geni_serial_remove(struct platform_device *pdev)
>   
>   static int __maybe_unused qcom_geni_serial_sys_suspend_noirq(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct qcom_geni_serial_port *port = platform_get_drvdata(pdev);
> +	struct qcom_geni_serial_port *port = dev_get_drvdata(dev);
>   	struct uart_port *uport = &port->uport;
>   
>   	uart_suspend_port(uport->private_data, uport);
> @@ -1095,8 +1094,7 @@ static int __maybe_unused qcom_geni_serial_sys_suspend_noirq(struct device *dev)
>   
>   static int __maybe_unused qcom_geni_serial_sys_resume_noirq(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct qcom_geni_serial_port *port = platform_get_drvdata(pdev);
> +	struct qcom_geni_serial_port *port = dev_get_drvdata(dev);
>   	struct uart_port *uport = &port->uport;
>   
>   	if (console_suspend_enabled && uport->suspended) {
> diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
> index 5f9f01fac6dd..7971997cdead 100644
> --- a/drivers/tty/serial/st-asc.c
> +++ b/drivers/tty/serial/st-asc.c
> @@ -842,16 +842,14 @@ static int asc_serial_remove(struct platform_device *pdev)
>   #ifdef CONFIG_PM_SLEEP
>   static int asc_serial_suspend(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct uart_port *port = platform_get_drvdata(pdev);
> +	struct uart_port *port = dev_get_drvdata(dev);
>   
>   	return uart_suspend_port(&asc_uart_driver, port);
>   }
>   
>   static int asc_serial_resume(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct uart_port *port = platform_get_drvdata(pdev);
> +	struct uart_port *port = dev_get_drvdata(dev);
>   
>   	return uart_resume_port(&asc_uart_driver, port);
>   }
> diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
> index abcb4d09a2d8..3ec4efbf25a9 100644
> --- a/drivers/tty/serial/xilinx_uartps.c
> +++ b/drivers/tty/serial/xilinx_uartps.c
> @@ -1430,8 +1430,7 @@ static int cdns_uart_resume(struct device *device)
>   #endif /* ! CONFIG_PM_SLEEP */
>   static int __maybe_unused cdns_runtime_suspend(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct uart_port *port = platform_get_drvdata(pdev);
> +	struct uart_port *port = dev_get_drvdata(dev);
>   	struct cdns_uart *cdns_uart = port->private_data;
>   
>   	clk_disable(cdns_uart->uartclk);
> @@ -1441,8 +1440,7 @@ static int __maybe_unused cdns_runtime_suspend(struct device *dev)
>   
>   static int __maybe_unused cdns_runtime_resume(struct device *dev)
>   {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct uart_port *port = platform_get_drvdata(pdev);
> +	struct uart_port *port = dev_get_drvdata(dev);
>   	struct cdns_uart *cdns_uart = port->private_data;
>   
>   	clk_enable(cdns_uart->pclk);
> 

For st-asc:

Acked-by: Patrice Chotard <patrice.chotard@...com>

Thanks