From: Andy Shevchenko <andy.shevchenko@gmail.com> To: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Cc: Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>, bcm-kernel-feedback-list <bcm-kernel-feedback-list@broadcom.com>, Nicolas Saenz Julienne <nsaenz@kernel.org>, Chris Brandt <chris.brandt@renesas.com>, Wolfram Sang <wsa+renesas@sang-engineering.com>, linux-i2c <linux-i2c@vger.kernel.org>, linux-rpi-kernel <linux-rpi-kernel@lists.infradead.org>, linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>, Linux-Renesas <linux-renesas-soc@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Prabhakarprabhakar.csengg@gmail.com Subject: Re: [PATCH v2 2/3] i2c: sh_mobile: Use platform_get_irq_optional() to get the interrupt Date: Sat, 25 Dec 2021 19:48:46 +0200 [thread overview] Message-ID: <CAHp75VcxCGjPiuQi9w5M3Gv97nj+TQVMdF86TQXi6bxgSTL1mQ@mail.gmail.com> (raw) In-Reply-To: <20211221175322.7096-3-prabhakar.mahadev-lad.rj@bp.renesas.com> On Wed, Dec 22, 2021 at 2:41 PM Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote: > > platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static > allocation of IRQ resources in DT core code, this causes an issue > when using hierarchical interrupt domains using "interrupts" property > in the node as this bypasses the hierarchical setup and messes up the > irq chaining. > > In preparation for removal of static setup of IRQ resource from DT core > code use platform_get_irq_optional() for DT users only. ... > + if (np) { Same comments as per your other patches, i.e. Why is this check here? > + int irq; > + > + while ((irq = platform_get_irq_optional(dev, k)) != -ENXIO) { Consider 0 as no IRQ. > + if (irq < 0) > + return irq; > + ret = devm_request_irq(&dev->dev, irq, sh_mobile_i2c_isr, > + 0, dev_name(&dev->dev), pd); > if (ret) { > - dev_err(&dev->dev, "cannot request IRQ %pa\n", &n); > + dev_err(&dev->dev, "cannot request IRQ %d\n", irq); > return ret; > } > + k++; > + }; > + } else { > + struct resource *res; > + resource_size_t n; > + > + while ((res = platform_get_resource(dev, IORESOURCE_IRQ, k))) { > + for (n = res->start; n <= res->end; n++) { > + ret = devm_request_irq(&dev->dev, n, sh_mobile_i2c_isr, > + 0, dev_name(&dev->dev), pd); > + if (ret) { > + dev_err(&dev->dev, "cannot request IRQ %pa\n", &n); > + return ret; > + } > + } > + k++; > } > - k++; > } -- With Best Regards, Andy Shevchenko
WARNING: multiple messages have this Message-ID (diff)
From: Andy Shevchenko <andy.shevchenko@gmail.com> To: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Cc: Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>, bcm-kernel-feedback-list <bcm-kernel-feedback-list@broadcom.com>, Nicolas Saenz Julienne <nsaenz@kernel.org>, Chris Brandt <chris.brandt@renesas.com>, Wolfram Sang <wsa+renesas@sang-engineering.com>, linux-i2c <linux-i2c@vger.kernel.org>, linux-rpi-kernel <linux-rpi-kernel@lists.infradead.org>, linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>, Linux-Renesas <linux-renesas-soc@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Prabhakarprabhakar.csengg@gmail.com Subject: Re: [PATCH v2 2/3] i2c: sh_mobile: Use platform_get_irq_optional() to get the interrupt Date: Sat, 25 Dec 2021 19:48:46 +0200 [thread overview] Message-ID: <CAHp75VcxCGjPiuQi9w5M3Gv97nj+TQVMdF86TQXi6bxgSTL1mQ@mail.gmail.com> (raw) In-Reply-To: <20211221175322.7096-3-prabhakar.mahadev-lad.rj@bp.renesas.com> On Wed, Dec 22, 2021 at 2:41 PM Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote: > > platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static > allocation of IRQ resources in DT core code, this causes an issue > when using hierarchical interrupt domains using "interrupts" property > in the node as this bypasses the hierarchical setup and messes up the > irq chaining. > > In preparation for removal of static setup of IRQ resource from DT core > code use platform_get_irq_optional() for DT users only. ... > + if (np) { Same comments as per your other patches, i.e. Why is this check here? > + int irq; > + > + while ((irq = platform_get_irq_optional(dev, k)) != -ENXIO) { Consider 0 as no IRQ. > + if (irq < 0) > + return irq; > + ret = devm_request_irq(&dev->dev, irq, sh_mobile_i2c_isr, > + 0, dev_name(&dev->dev), pd); > if (ret) { > - dev_err(&dev->dev, "cannot request IRQ %pa\n", &n); > + dev_err(&dev->dev, "cannot request IRQ %d\n", irq); > return ret; > } > + k++; > + }; > + } else { > + struct resource *res; > + resource_size_t n; > + > + while ((res = platform_get_resource(dev, IORESOURCE_IRQ, k))) { > + for (n = res->start; n <= res->end; n++) { > + ret = devm_request_irq(&dev->dev, n, sh_mobile_i2c_isr, > + 0, dev_name(&dev->dev), pd); > + if (ret) { > + dev_err(&dev->dev, "cannot request IRQ %pa\n", &n); > + return ret; > + } > + } > + k++; > } > - k++; > } -- With Best Regards, Andy Shevchenko _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-12-25 17:49 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-21 17:53 [PATCH v2 0/3] i2c/busses: Use platform_get_irq/_optional() variants to fetch IRQ's Lad Prabhakar 2021-12-21 17:53 ` Lad Prabhakar 2021-12-21 17:53 ` [PATCH v2 1/3] i2c: bcm2835: Use platform_get_irq() to get the interrupt Lad Prabhakar 2021-12-21 17:53 ` Lad Prabhakar 2021-12-21 18:24 ` Florian Fainelli 2021-12-21 18:24 ` Florian Fainelli 2022-01-03 9:18 ` Wolfram Sang 2022-01-03 9:18 ` Wolfram Sang 2021-12-21 17:53 ` [PATCH v2 2/3] i2c: sh_mobile: Use platform_get_irq_optional() " Lad Prabhakar 2021-12-21 17:53 ` Lad Prabhakar 2021-12-22 9:20 ` Geert Uytterhoeven 2021-12-22 9:20 ` Geert Uytterhoeven 2021-12-22 9:49 ` Wolfram Sang 2021-12-22 9:49 ` Wolfram Sang 2021-12-25 17:48 ` Andy Shevchenko [this message] 2021-12-25 17:48 ` Andy Shevchenko 2021-12-25 23:45 ` Prabhakar Mahadev Lad 2021-12-25 23:45 ` Prabhakar Mahadev Lad 2021-12-26 8:40 ` Andy Shevchenko 2021-12-26 8:40 ` Andy Shevchenko 2021-12-26 10:03 ` Lad, Prabhakar 2021-12-26 10:03 ` Lad, Prabhakar 2022-01-03 9:19 ` Wolfram Sang 2022-01-03 9:19 ` Wolfram Sang 2021-12-21 17:53 ` [PATCH v2 3/3] i2c: riic: Use platform_get_irq() " Lad Prabhakar 2021-12-21 17:53 ` Lad Prabhakar 2021-12-22 9:52 ` Wolfram Sang 2021-12-22 9:52 ` Wolfram Sang 2021-12-22 13:00 ` Geert Uytterhoeven 2021-12-22 13:00 ` Geert Uytterhoeven 2022-01-03 9:19 ` Wolfram Sang 2022-01-03 9:19 ` Wolfram Sang
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