* [PATCH v3 1/2] drivers: provide devm_platform_request_irq() @ 2020-05-27 14:26 Dejin Zheng 2020-05-27 14:26 ` [PATCH v3 2/2] i2c: busses: convert to devm_platform_request_irq() Dejin Zheng 2020-07-17 14:30 ` [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng 0 siblings, 2 replies; 7+ messages in thread From: Dejin Zheng @ 2020-05-27 14:26 UTC (permalink / raw) To: corbet, gregkh, michal.simek, wsa+renesas, linus.walleij, linux-doc, linux-i2c, linux-kernel Cc: Dejin Zheng, Wolfram Sang It will call devm_request_irq() after platform_get_irq() function in many drivers, sometimes, it is not right for the error handling of these two functions in some drivers. so provide this function to simplify the driver. Cc: Michal Simek <michal.simek@xilinx.com> Cc: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> --- v2 -> v3: - add devm_platform_request_irq() to devres.rst by Grygorii's suggestion. 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/ .../driver-api/driver-model/devres.rst | 1 + drivers/base/platform.c | 33 +++++++++++++++++++ include/linux/platform_device.h | 4 +++ 3 files changed, 38 insertions(+) diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst index 644078332354..89681264ee2c 100644 --- a/Documentation/driver-api/driver-model/devres.rst +++ b/Documentation/driver-api/driver-model/devres.rst @@ -325,6 +325,7 @@ IRQ devm_request_any_context_irq() devm_request_irq() devm_request_threaded_irq() + devm_platform_request_irq() devm_irq_alloc_descs() devm_irq_alloc_desc() devm_irq_alloc_desc_at() diff --git a/drivers/base/platform.c b/drivers/base/platform.c index c0d0a5490ac6..1d2fd1ea3bc5 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -275,6 +275,39 @@ int platform_irq_count(struct platform_device *dev) } EXPORT_SYMBOL_GPL(platform_irq_count); +/** + * devm_platform_request_irq - get an irq and allocate an interrupt + * line for a managed device + * @pdev: platform device + * @num: IRQ number index + * @irq: get an IRQ for a device if irq != NULL + * @handler: function to be called when the IRQ occurs + * @irqflags: interrupt type flags + * @devname: an ascii name for the claiming device, dev_name(dev) if NULL + * @dev_id: a cookie passed back to the handler function + * + * Return: zero on success, negative error number on failure. + */ +int devm_platform_request_irq(struct platform_device *pdev, unsigned int num, + unsigned int *irq, irq_handler_t handler, + unsigned long irqflags, const char *devname, void *dev_id) +{ + int tmp_irq, ret; + + tmp_irq = platform_get_irq(pdev, num); + if (tmp_irq < 0) + return tmp_irq; + + ret = devm_request_irq(&pdev->dev, tmp_irq, handler, irqflags, + devname, dev_id); + if (ret < 0) + dev_err(&pdev->dev, "can't request IRQ\n"); + else if (irq != NULL) + *irq = tmp_irq; + return ret; +} +EXPORT_SYMBOL_GPL(devm_platform_request_irq); + /** * platform_get_resource_byname - get a resource for a device by name * @dev: platform device diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 77a2aada106d..d94652deea5c 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -11,6 +11,7 @@ #define _PLATFORM_DEVICE_H_ #include <linux/device.h> +#include <linux/interrupt.h> #define PLATFORM_DEVID_NONE (-1) #define PLATFORM_DEVID_AUTO (-2) @@ -70,6 +71,9 @@ devm_platform_ioremap_resource_byname(struct platform_device *pdev, extern int platform_get_irq(struct platform_device *, unsigned int); extern int platform_get_irq_optional(struct platform_device *, unsigned int); extern int platform_irq_count(struct platform_device *); +extern int devm_platform_request_irq(struct platform_device *pdev, + unsigned int num, unsigned int *irq, irq_handler_t handler, + unsigned long irqflags, const char *devname, void *dev_id); extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *); -- 2.25.0 ^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 2/2] i2c: busses: convert to devm_platform_request_irq() 2020-05-27 14:26 [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng @ 2020-05-27 14:26 ` Dejin Zheng 2020-05-28 7:10 ` Michal Simek 2020-07-17 14:30 ` [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng 1 sibling, 1 reply; 7+ messages in thread From: Dejin Zheng @ 2020-05-27 14:26 UTC (permalink / raw) To: corbet, gregkh, michal.simek, wsa+renesas, linus.walleij, linux-doc, linux-i2c, linux-kernel Cc: Dejin Zheng, Wolfram Sang Use devm_platform_request_irq() to simplify code, and it contains platform_get_irq() and devm_request_irq(). Cc: Michal Simek <michal.simek@xilinx.com> Cc: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.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; -- 2.25.0 ^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v3 2/2] i2c: busses: convert to devm_platform_request_irq() 2020-05-27 14:26 ` [PATCH v3 2/2] i2c: busses: convert to devm_platform_request_irq() Dejin Zheng @ 2020-05-28 7:10 ` Michal Simek 0 siblings, 0 replies; 7+ messages in thread From: Michal Simek @ 2020-05-28 7:10 UTC (permalink / raw) To: Dejin Zheng, corbet, gregkh, michal.simek, wsa+renesas, linus.walleij, linux-doc, linux-i2c, linux-kernel Cc: Wolfram Sang 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@xilinx.com> > Cc: Wolfram Sang <wsa@the-dreams.de> > Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.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@xilinx.com> Thanks, Michal ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 1/2] drivers: provide devm_platform_request_irq() 2020-05-27 14:26 [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng 2020-05-27 14:26 ` [PATCH v3 2/2] i2c: busses: convert to devm_platform_request_irq() Dejin Zheng @ 2020-07-17 14:30 ` Dejin Zheng 2020-07-17 14:59 ` Greg KH 1 sibling, 1 reply; 7+ messages in thread From: Dejin Zheng @ 2020-07-17 14:30 UTC (permalink / raw) To: corbet, gregkh, michal.simek, wsa+renesas, linus.walleij, linux-doc, linux-i2c, linux-kernel Cc: Wolfram Sang On Wed, May 27, 2020 at 10:26:10PM +0800, Dejin Zheng wrote: Hi Jonathan, Greg, Rafael, Linus, Michal and Wolfram: Could you help me review this patch if you have free time? Thank you very very much! BR, Dejin > It will call devm_request_irq() after platform_get_irq() function > in many drivers, sometimes, it is not right for the error handling > of these two functions in some drivers. so provide this function > to simplify the driver. > > Cc: Michal Simek <michal.simek@xilinx.com> > Cc: Wolfram Sang <wsa@the-dreams.de> > Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> > --- > v2 -> v3: > - add devm_platform_request_irq() to devres.rst by Grygorii's > suggestion. > 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/ > ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 1/2] drivers: provide devm_platform_request_irq() 2020-07-17 14:30 ` [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng @ 2020-07-17 14:59 ` Greg KH 2020-07-17 15:06 ` Dejin Zheng 0 siblings, 1 reply; 7+ messages in thread From: Greg KH @ 2020-07-17 14:59 UTC (permalink / raw) To: Dejin Zheng Cc: corbet, michal.simek, wsa+renesas, linus.walleij, linux-doc, linux-i2c, linux-kernel, Wolfram Sang On Fri, Jul 17, 2020 at 10:30:30PM +0800, Dejin Zheng wrote: > On Wed, May 27, 2020 at 10:26:10PM +0800, Dejin Zheng wrote: > Hi Jonathan, Greg, Rafael, Linus, Michal and Wolfram: > > Could you help me review this patch if you have free time? It's not anywhere in queue, sorry, please resend it? thanks, greg k-h ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 1/2] drivers: provide devm_platform_request_irq() 2020-07-17 14:59 ` Greg KH @ 2020-07-17 15:06 ` Dejin Zheng 0 siblings, 0 replies; 7+ messages in thread From: Dejin Zheng @ 2020-07-17 15:06 UTC (permalink / raw) To: Greg KH Cc: corbet, michal.simek, wsa+renesas, linus.walleij, linux-doc, linux-i2c, linux-kernel, Wolfram Sang On Fri, Jul 17, 2020 at 04:59:46PM +0200, Greg KH wrote: > On Fri, Jul 17, 2020 at 10:30:30PM +0800, Dejin Zheng wrote: > > On Wed, May 27, 2020 at 10:26:10PM +0800, Dejin Zheng wrote: > > Hi Jonathan, Greg, Rafael, Linus, Michal and Wolfram: > > > > Could you help me review this patch if you have free time? > > It's not anywhere in queue, sorry, please resend it? > Ok, I will resend it. Thanks very much! BR, Dejin > thanks, > > greg k-h ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 1/2] drivers: provide devm_platform_request_irq()
@ 2020-05-27 18:45 Markus Elfring
0 siblings, 0 replies; 7+ messages in thread
From: Markus Elfring @ 2020-05-27 18:45 UTC (permalink / raw)
To: Dejin Zheng, kernel-janitors, linux-doc, linux-i2c
Cc: linux-kernel, Coccinelle, Greg Kroah-Hartman, Grygorii Strashko,
Jonathan Corbet, Michal Simek, Linus Walleij, Wolfram Sang,
Wolfram Sang
> It will call devm_request_irq() after platform_get_irq() function
> in many drivers, sometimes, it is not right for the error handling
> of these two functions in some drivers. so provide this function
> to simplify the driver.
I recommend to improve also this change description.
How do you think about a wording variant like the following?
The function “devm_request_irq” is called after the
function “platform_get_irq” in many drivers.
The exception handling is incomplete there sometimes.
Thus add a corresponding wrapper function for the simplification
of the drivers.
Will a companion script for the semantic patch language (Coccinelle software)
become helpful for further support of collateral evolution?
Regards,
Markus
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2020-07-17 15:06 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-05-27 14:26 [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng 2020-05-27 14:26 ` [PATCH v3 2/2] i2c: busses: convert to devm_platform_request_irq() Dejin Zheng 2020-05-28 7:10 ` Michal Simek 2020-07-17 14:30 ` [PATCH v3 1/2] drivers: provide devm_platform_request_irq() Dejin Zheng 2020-07-17 14:59 ` Greg KH 2020-07-17 15:06 ` Dejin Zheng 2020-05-27 18:45 Markus Elfring
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