From: Harish Jenny K N <harish_kandiga@mentor.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Jonathan Corbet <corbet@lwn.net>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Eugeniu Rosca <erosca@de.adit-jv.com>
Cc: Alexander Graf <graf@amazon.com>,
Peter Maydell <peter.maydell@linaro.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Phil Reid <preid@electromag.com.au>,
Marc Zyngier <marc.zyngier@arm.com>,
Christoffer Dall <christoffer.dall@arm.com>,
Magnus Damm <magnus.damm@gmail.com>, <linux-gpio@vger.kernel.org>,
<linux-doc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-renesas-soc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <qemu-devel@nongnu.org>
Subject: Re: [PATCH v3 5/7] gpio: Add GPIO Aggregator/Repeater driver
Date: Tue, 3 Dec 2019 11:12:38 +0530 [thread overview]
Message-ID: <585c4ad9-31fc-e87e-07c4-b8d6aa09c7e4@mentor.com> (raw)
In-Reply-To: <20191127084253.16356-6-geert+renesas@glider.be>
> +static int gpio_aggregator_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct gpio_desc **descs;
> + struct gpiochip_fwd *fwd;
> + int i, n;
> +
> + n = gpiod_count(dev, NULL);
> + if (n < 0)
> + return n;
> +
> + descs = devm_kmalloc_array(dev, n, sizeof(*descs), GFP_KERNEL);
> + if (!descs)
> + return -ENOMEM;
> +
> + for (i = 0; i < n; i++) {
> + descs[i] = devm_gpiod_get_index(dev, NULL, i, GPIOD_ASIS);
can you please add this check as well as we need to return EPROBE_DEFER.
if (desc[i] == ERR_PTR(-ENOENT))
< return -EPROBE_DEFER;
> + if (IS_ERR(descs[i]))
> + return PTR_ERR(descs[i]);
> + }
> +
> + fwd = gpiochip_fwd_create(dev, n, descs);
> + if (IS_ERR(fwd))
> + return PTR_ERR(fwd);
> +
> + platform_set_drvdata(pdev, fwd);
> + return 0;
> +}
> +
> +#ifdef CONFIG_OF
> +static const struct of_device_id gpio_aggregator_dt_ids[] = {
> + { .compatible = "gpio-repeater" },
> + /*
> + * Add GPIO-operated devices controlled from userspace below,
> + * or use "driver_override" in sysfs
> + */
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, gpio_aggregator_dt_ids);
> +#endif
> +
> +static struct platform_driver gpio_aggregator_driver = {
> + .probe = gpio_aggregator_probe,
> + .driver = {
> + .name = DRV_NAME,
> + .groups = gpio_aggregator_groups,
> + .of_match_table = of_match_ptr(gpio_aggregator_dt_ids),
> + },
> +};
> +
> +static int __init gpio_aggregator_init(void)
> +{
> + return platform_driver_register(&gpio_aggregator_driver);
> +}
> +module_init(gpio_aggregator_init);
> +
> +static void __exit gpio_aggregator_exit(void)
> +{
> + gpio_aggregator_remove_all();
> + platform_driver_unregister(&gpio_aggregator_driver);
> +}
> +module_exit(gpio_aggregator_exit);
> +
> +MODULE_AUTHOR("Geert Uytterhoeven <geert+renesas@glider.be>");
> +MODULE_DESCRIPTION("GPIO Aggregator/Repeater");
> +MODULE_LICENSE("GPL v2");
next prev parent reply other threads:[~2019-12-03 5:42 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-27 8:42 [PATCH v3 0/7] gpio: Add GPIO Aggregator/Repeater Geert Uytterhoeven
2019-11-27 8:42 ` [PATCH v3 1/7] gpiolib: Add GPIOCHIP_NAME definition Geert Uytterhoeven
2019-11-28 3:38 ` Ulrich Hecht
2019-12-02 21:17 ` Eugeniu Rosca
2019-12-12 10:37 ` Linus Walleij
2019-11-27 8:42 ` [PATCH v3 2/7] gpiolib: Add support for gpiochipN-based table lookup Geert Uytterhoeven
2019-11-28 3:38 ` Ulrich Hecht
2019-12-12 13:20 ` Linus Walleij
2019-12-12 13:33 ` Geert Uytterhoeven
2019-12-12 14:36 ` Linus Walleij
2019-11-27 8:42 ` [PATCH v3 3/7] gpiolib: Add support for GPIO line " Geert Uytterhoeven
2019-11-28 3:39 ` Ulrich Hecht
2019-12-12 13:40 ` Linus Walleij
2019-11-27 8:42 ` [PATCH v3 4/7] dt-bindings: gpio: Add gpio-repeater bindings Geert Uytterhoeven
2019-11-28 3:39 ` Ulrich Hecht
2019-12-03 5:51 ` Harish Jenny K N
2019-12-05 21:06 ` Rob Herring
2019-12-06 9:17 ` Geert Uytterhoeven
2019-12-06 15:03 ` Rob Herring
2020-01-06 8:12 ` Geert Uytterhoeven
2020-01-07 9:22 ` Harish Jenny K N
2020-01-16 5:09 ` Harish Jenny K N
2019-11-27 8:42 ` [PATCH v3 5/7] gpio: Add GPIO Aggregator/Repeater driver Geert Uytterhoeven
2019-11-27 14:15 ` Eugeniu Rosca
2019-11-27 14:33 ` Geert Uytterhoeven
2019-11-28 3:40 ` Ulrich Hecht
2019-12-03 5:42 ` Harish Jenny K N [this message]
2019-12-03 8:17 ` Geert Uytterhoeven
2019-12-03 8:51 ` Harish Jenny K N
2019-12-03 10:51 ` Eugeniu Rosca
2020-01-09 13:35 ` Geert Uytterhoeven
2020-01-09 13:49 ` Eugeniu Rosca
2019-12-12 14:34 ` Linus Walleij
2019-12-12 15:24 ` Geert Uytterhoeven
2020-01-04 0:38 ` Linus Walleij
2020-01-06 8:23 ` Geert Uytterhoeven
2020-01-08 23:12 ` Linus Walleij
2019-11-27 8:42 ` [PATCH v3 6/7] docs: gpio: Add GPIO Aggregator/Repeater documentation Geert Uytterhoeven
2019-11-28 3:41 ` Ulrich Hecht
2019-12-12 14:42 ` Linus Walleij
2019-12-12 14:48 ` Geert Uytterhoeven
2020-01-04 0:21 ` Linus Walleij
2020-01-06 8:06 ` Geert Uytterhoeven
2019-11-27 8:42 ` [PATCH v3 7/7] MAINTAINERS: Add GPIO Aggregator/Repeater section Geert Uytterhoeven
2019-12-03 5:38 ` Harish Jenny K N
2020-01-18 1:46 ` [PATCH v3 0/7] gpio: Add GPIO Aggregator/Repeater Eugeniu Rosca
2020-01-20 9:33 ` Geert Uytterhoeven
2020-01-20 12:14 ` Eugeniu Rosca
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