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Date: Thu, 28 May 2020 09:10:05 +0200
From: Michal Simek <michal.simek@...inx.com>
To: Dejin Zheng <zhengdejin5@...il.com>, corbet@....net,
gregkh@...uxfoundation.org, michal.simek@...inx.com,
wsa+renesas@...g-engineering.com, linus.walleij@...aro.org,
linux-doc@...r.kernel.org, linux-i2c@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Wolfram Sang <wsa@...-dreams.de>
Subject: Re: [PATCH v3 2/2] i2c: busses: convert to
devm_platform_request_irq()
On 27. 05. 20 16:26, Dejin Zheng wrote:
> Use devm_platform_request_irq() to simplify code, and it contains
> platform_get_irq() and devm_request_irq().
>
> Cc: Michal Simek <michal.simek@...inx.com>
> Cc: Wolfram Sang <wsa@...-dreams.de>
> Signed-off-by: Dejin Zheng <zhengdejin5@...il.com>
> Acked-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> v2 -> v3:
> - no changed and Thanks linus's review.
> v1 -> v2:
> - The patch content has not changed. just resend it by this discussion:
> https://patchwork.ozlabs.org/project/linux-i2c/patch/20200520144821.8069-1-zhengdejin5@gmail.com/
>
> drivers/i2c/busses/i2c-bcm-kona.c | 16 +++-------------
> drivers/i2c/busses/i2c-cadence.c | 10 +++-------
> drivers/i2c/busses/i2c-digicolor.c | 10 +++-------
> drivers/i2c/busses/i2c-emev2.c | 5 ++---
> drivers/i2c/busses/i2c-jz4780.c | 5 ++---
> drivers/i2c/busses/i2c-meson.c | 13 ++++---------
> drivers/i2c/busses/i2c-mxs.c | 9 +++------
> drivers/i2c/busses/i2c-pnx.c | 9 ++-------
> drivers/i2c/busses/i2c-rcar.c | 9 +++------
> drivers/i2c/busses/i2c-rk3x.c | 14 +++-----------
> drivers/i2c/busses/i2c-sirf.c | 10 ++--------
> drivers/i2c/busses/i2c-stu300.c | 4 ++--
> drivers/i2c/busses/i2c-synquacer.c | 12 +++---------
> 13 files changed, 35 insertions(+), 91 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-bcm-kona.c b/drivers/i2c/busses/i2c-bcm-kona.c
> index ed5e1275ae46..f45acb47552a 100644
> --- a/drivers/i2c/busses/i2c-bcm-kona.c
> +++ b/drivers/i2c/busses/i2c-bcm-kona.c
> @@ -818,20 +818,10 @@ static int bcm_kona_i2c_probe(struct platform_device *pdev)
> ISR_NOACK_MASK,
> dev->base + ISR_OFFSET);
>
> - /* Get the interrupt number */
> - dev->irq = platform_get_irq(pdev, 0);
> - if (dev->irq < 0) {
> - rc = dev->irq;
> - goto probe_disable_clk;
> - }
> -
> - /* register the ISR handler */
> - rc = devm_request_irq(&pdev->dev, dev->irq, bcm_kona_i2c_isr,
> - IRQF_SHARED, pdev->name, dev);
> - if (rc) {
> - dev_err(dev->device, "failed to request irq %i\n", dev->irq);
> + rc = devm_platform_request_irq(pdev, 0, &dev->irq, bcm_kona_i2c_isr,
> + IRQF_SHARED, pdev->name, dev);
> + if (rc)
> goto probe_disable_clk;
> - }
>
> /* Enable the controller but leave it idle */
> bcm_kona_i2c_send_cmd_to_ctrl(dev, BCM_CMD_NOACTION);
> diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c
> index 4b72398af505..9ffae4d231dc 100644
> --- a/drivers/i2c/busses/i2c-cadence.c
> +++ b/drivers/i2c/busses/i2c-cadence.c
> @@ -1204,8 +1204,6 @@ static int cdns_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(id->membase))
> return PTR_ERR(id->membase);
>
> - id->irq = platform_get_irq(pdev, 0);
> -
> id->adap.owner = THIS_MODULE;
> id->adap.dev.of_node = pdev->dev.of_node;
> id->adap.algo = &cdns_i2c_algo;
> @@ -1256,12 +1254,10 @@ static int cdns_i2c_probe(struct platform_device *pdev)
> goto err_clk_dis;
> }
>
> - ret = devm_request_irq(&pdev->dev, id->irq, cdns_i2c_isr, 0,
> - DRIVER_NAME, id);
> - if (ret) {
> - dev_err(&pdev->dev, "cannot get irq %d\n", id->irq);
> + ret = devm_platform_request_irq(pdev, 0, &id->irq, cdns_i2c_isr, 0,
> + DRIVER_NAME, id);
> + if (ret)
> goto err_clk_dis;
> - }
>
> /*
> * Cadence I2C controller has a bug wherein it generates
> diff --git a/drivers/i2c/busses/i2c-digicolor.c b/drivers/i2c/busses/i2c-digicolor.c
> index 332f00437479..9ea965f41396 100644
> --- a/drivers/i2c/busses/i2c-digicolor.c
> +++ b/drivers/i2c/busses/i2c-digicolor.c
> @@ -290,7 +290,7 @@ static int dc_i2c_probe(struct platform_device *pdev)
> {
> struct device_node *np = pdev->dev.of_node;
> struct dc_i2c *i2c;
> - int ret = 0, irq;
> + int ret = 0;
>
> i2c = devm_kzalloc(&pdev->dev, sizeof(struct dc_i2c), GFP_KERNEL);
> if (!i2c)
> @@ -314,12 +314,8 @@ static int dc_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(i2c->regs))
> return PTR_ERR(i2c->regs);
>
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0)
> - return irq;
> -
> - ret = devm_request_irq(&pdev->dev, irq, dc_i2c_irq, 0,
> - dev_name(&pdev->dev), i2c);
> + ret = devm_platform_request_irq(pdev, 0, NULL, dc_i2c_irq, 0,
> + dev_name(&pdev->dev), i2c);
> if (ret < 0)
> return ret;
>
> diff --git a/drivers/i2c/busses/i2c-emev2.c b/drivers/i2c/busses/i2c-emev2.c
> index 1a319352e51b..cae00a9ec86f 100644
> --- a/drivers/i2c/busses/i2c-emev2.c
> +++ b/drivers/i2c/busses/i2c-emev2.c
> @@ -395,9 +395,8 @@ static int em_i2c_probe(struct platform_device *pdev)
>
> em_i2c_reset(&priv->adap);
>
> - priv->irq = platform_get_irq(pdev, 0);
> - ret = devm_request_irq(&pdev->dev, priv->irq, em_i2c_irq_handler, 0,
> - "em_i2c", priv);
> + ret = devm_platform_request_irq(pdev, 0, &priv->irq,
> + em_i2c_irq_handler, 0, "em_i2c", priv);
> if (ret)
> goto err_clk;
>
> diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c
> index ba831df6661e..27de0309f211 100644
> --- a/drivers/i2c/busses/i2c-jz4780.c
> +++ b/drivers/i2c/busses/i2c-jz4780.c
> @@ -825,9 +825,8 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
>
> jz4780_i2c_writew(i2c, JZ4780_I2C_INTM, 0x0);
>
> - i2c->irq = platform_get_irq(pdev, 0);
> - ret = devm_request_irq(&pdev->dev, i2c->irq, jz4780_i2c_irq, 0,
> - dev_name(&pdev->dev), i2c);
> + ret = devm_platform_request_irq(pdev, 0, &i2c->irq, jz4780_i2c_irq, 0,
> + dev_name(&pdev->dev), i2c);
> if (ret)
> goto err;
>
> diff --git a/drivers/i2c/busses/i2c-meson.c b/drivers/i2c/busses/i2c-meson.c
> index c5dec572fc48..2e5a855ff20a 100644
> --- a/drivers/i2c/busses/i2c-meson.c
> +++ b/drivers/i2c/busses/i2c-meson.c
> @@ -398,7 +398,7 @@ static int meson_i2c_probe(struct platform_device *pdev)
> struct device_node *np = pdev->dev.of_node;
> struct meson_i2c *i2c;
> struct i2c_timings timings;
> - int irq, ret = 0;
> + int ret = 0;
>
> i2c = devm_kzalloc(&pdev->dev, sizeof(struct meson_i2c), GFP_KERNEL);
> if (!i2c)
> @@ -425,15 +425,10 @@ static int meson_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(i2c->regs))
> return PTR_ERR(i2c->regs);
>
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0)
> - return irq;
> -
> - ret = devm_request_irq(&pdev->dev, irq, meson_i2c_irq, 0, NULL, i2c);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "can't request IRQ\n");
> + ret = devm_platform_request_irq(pdev, 0, NULL, meson_i2c_irq,
> + 0, NULL, i2c);
> + if (ret < 0)
> return ret;
> - }
>
> ret = clk_prepare(i2c->clk);
> if (ret < 0) {
> diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
> index 9587347447f0..cff82af3208a 100644
> --- a/drivers/i2c/busses/i2c-mxs.c
> +++ b/drivers/i2c/busses/i2c-mxs.c
> @@ -802,7 +802,7 @@ static int mxs_i2c_probe(struct platform_device *pdev)
> struct device *dev = &pdev->dev;
> struct mxs_i2c_dev *i2c;
> struct i2c_adapter *adap;
> - int err, irq;
> + int err;
>
> i2c = devm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);
> if (!i2c)
> @@ -817,11 +817,8 @@ static int mxs_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(i2c->regs))
> return PTR_ERR(i2c->regs);
>
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0)
> - return irq;
> -
> - err = devm_request_irq(dev, irq, mxs_i2c_isr, 0, dev_name(dev), i2c);
> + err = devm_platform_request_irq(pdev, 0, NULL, mxs_i2c_isr, 0,
> + dev_name(dev), i2c);
> if (err)
> return err;
>
> diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
> index 5d7207c10f1d..3e249373375f 100644
> --- a/drivers/i2c/busses/i2c-pnx.c
> +++ b/drivers/i2c/busses/i2c-pnx.c
> @@ -718,13 +718,8 @@ static int i2c_pnx_probe(struct platform_device *pdev)
> }
> init_completion(&alg_data->mif.complete);
>
> - alg_data->irq = platform_get_irq(pdev, 0);
> - if (alg_data->irq < 0) {
> - ret = alg_data->irq;
> - goto out_clock;
> - }
> - ret = devm_request_irq(&pdev->dev, alg_data->irq, i2c_pnx_interrupt,
> - 0, pdev->name, alg_data);
> + ret = devm_platform_request_irq(pdev, 0, &alg_data->irq,
> + i2c_pnx_interrupt, 0, pdev->name, alg_data);
> if (ret)
> goto out_clock;
>
> diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
> index a45c4bf1ec01..bd59a13de707 100644
> --- a/drivers/i2c/busses/i2c-rcar.c
> +++ b/drivers/i2c/busses/i2c-rcar.c
> @@ -984,13 +984,10 @@ static int rcar_i2c_probe(struct platform_device *pdev)
> else
> pm_runtime_put(dev);
>
> -
> - priv->irq = platform_get_irq(pdev, 0);
> - ret = devm_request_irq(dev, priv->irq, rcar_i2c_irq, 0, dev_name(dev), priv);
> - if (ret < 0) {
> - dev_err(dev, "cannot get irq %d\n", priv->irq);
> + ret = devm_platform_request_irq(pdev, 0, &priv->irq, rcar_i2c_irq, 0,
> + dev_name(dev), priv);
> + if (ret < 0)
> goto out_pm_disable;
> - }
>
> platform_set_drvdata(pdev, priv);
>
> diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
> index bc698240c4aa..a8d47689de0a 100644
> --- a/drivers/i2c/busses/i2c-rk3x.c
> +++ b/drivers/i2c/busses/i2c-rk3x.c
> @@ -1196,7 +1196,6 @@ static int rk3x_i2c_probe(struct platform_device *pdev)
> int ret = 0;
> int bus_nr;
> u32 value;
> - int irq;
> unsigned long clk_rate;
>
> i2c = devm_kzalloc(&pdev->dev, sizeof(struct rk3x_i2c), GFP_KERNEL);
> @@ -1258,17 +1257,10 @@ static int rk3x_i2c_probe(struct platform_device *pdev)
> }
> }
>
> - /* IRQ setup */
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0)
> - return irq;
> -
> - ret = devm_request_irq(&pdev->dev, irq, rk3x_i2c_irq,
> - 0, dev_name(&pdev->dev), i2c);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "cannot request IRQ\n");
> + ret = devm_platform_request_irq(pdev, 0, NULL, rk3x_i2c_irq,
> + 0, dev_name(&pdev->dev), i2c);
> + if (ret < 0)
> return ret;
> - }
>
> platform_set_drvdata(pdev, i2c);
>
> diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c
> index d7f72ec331e8..a593c15bfbf5 100644
> --- a/drivers/i2c/busses/i2c-sirf.c
> +++ b/drivers/i2c/busses/i2c-sirf.c
> @@ -274,7 +274,6 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev)
> struct clk *clk;
> int bitrate;
> int ctrl_speed;
> - int irq;
>
> int err;
> u32 regval;
> @@ -314,13 +313,8 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev)
> goto out;
> }
>
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0) {
> - err = irq;
> - goto out;
> - }
> - err = devm_request_irq(&pdev->dev, irq, i2c_sirfsoc_irq, 0,
> - dev_name(&pdev->dev), siic);
> + err = devm_platform_request_irq(pdev, 0, NULL, i2c_sirfsoc_irq, 0,
> + dev_name(&pdev->dev), siic);
> if (err)
> goto out;
>
> diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c
> index 64d739baf480..7893c532b8f2 100644
> --- a/drivers/i2c/busses/i2c-stu300.c
> +++ b/drivers/i2c/busses/i2c-stu300.c
> @@ -881,8 +881,8 @@ static int stu300_probe(struct platform_device *pdev)
> if (IS_ERR(dev->virtbase))
> return PTR_ERR(dev->virtbase);
>
> - dev->irq = platform_get_irq(pdev, 0);
> - ret = devm_request_irq(&pdev->dev, dev->irq, stu300_irh, 0, NAME, dev);
> + ret = devm_platform_request_irq(pdev, 0, &dev->irq, stu300_irh,
> + 0, NAME, dev);
> if (ret < 0)
> return ret;
>
> diff --git a/drivers/i2c/busses/i2c-synquacer.c b/drivers/i2c/busses/i2c-synquacer.c
> index c9a3dba6a75d..d9143373e688 100644
> --- a/drivers/i2c/busses/i2c-synquacer.c
> +++ b/drivers/i2c/busses/i2c-synquacer.c
> @@ -577,16 +577,10 @@ static int synquacer_i2c_probe(struct platform_device *pdev)
> if (IS_ERR(i2c->base))
> return PTR_ERR(i2c->base);
>
> - i2c->irq = platform_get_irq(pdev, 0);
> - if (i2c->irq < 0)
> - return -ENODEV;
> -
> - ret = devm_request_irq(&pdev->dev, i2c->irq, synquacer_i2c_isr,
> - 0, dev_name(&pdev->dev), i2c);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "cannot claim IRQ %d\n", i2c->irq);
> + ret = devm_platform_request_irq(pdev, 0, &i2c->irq, synquacer_i2c_isr,
> + 0, dev_name(&pdev->dev), i2c);
> + if (ret < 0)
> return ret;
> - }
>
> i2c->state = STATE_IDLE;
> i2c->dev = &pdev->dev;
>
Acked-by: Michal Simek <michal.simek@...inx.com>
Thanks,
Michal
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