From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Linus Walleij <linus.walleij@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Kent Gibson <warthog618@gmail.com>
Cc: linux-gpio@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH v2 9/9] gpio: mockup: refactor the module init function
Date: Mon, 28 Sep 2020 12:41:55 +0200 [thread overview]
Message-ID: <20200928104155.7385-10-brgl@bgdev.pl> (raw)
In-Reply-To: <20200928104155.7385-1-brgl@bgdev.pl>
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Let's move the code preparing the device properties into a separate
routine. This has the advantage of simplifying the error handling and
makes the indentation less deep.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpio-mockup.c | 96 +++++++++++++++++++-------------------
1 file changed, 49 insertions(+), 47 deletions(-)
diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index 47b7de6d5ab1..02eea05a09dd 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -503,16 +503,59 @@ static __init char **gpio_mockup_make_line_names(const char *label,
return names;
}
-static int __init gpio_mockup_init(void)
+static int __init gpio_mockup_register_chip(int idx)
{
struct property_entry properties[GPIO_MOCKUP_MAX_PROP];
- int i, prop, num_chips, err = 0, base;
struct platform_device_info pdevinfo;
struct platform_device *pdev;
+ char **line_names = NULL;
char chip_label[32];
- char **line_names;
+ int prop = 0, base;
u16 ngpio;
+ memset(properties, 0, sizeof(properties));
+ memset(&pdevinfo, 0, sizeof(pdevinfo));
+
+ snprintf(chip_label, sizeof(chip_label), "gpio-mockup-%c", idx + 'A');
+ properties[prop++] = PROPERTY_ENTRY_STRING("chip-label", chip_label);
+
+ base = gpio_mockup_range_base(idx);
+ if (base >= 0)
+ properties[prop++] = PROPERTY_ENTRY_U32("gpio-base", base);
+
+ ngpio = base < 0 ? gpio_mockup_range_ngpio(idx)
+ : gpio_mockup_range_ngpio(idx) - base;
+ properties[prop++] = PROPERTY_ENTRY_U16("nr-gpios", ngpio);
+
+ if (gpio_mockup_named_lines) {
+ line_names = gpio_mockup_make_line_names(chip_label, ngpio);
+ if (!line_names)
+ return -ENOMEM;
+
+ properties[prop++] = PROPERTY_ENTRY_STRING_ARRAY_LEN(
+ "gpio-line-names", line_names, ngpio);
+ }
+
+ pdevinfo.name = "gpio-mockup";
+ pdevinfo.id = idx;
+ pdevinfo.properties = properties;
+
+ pdev = platform_device_register_full(&pdevinfo);
+ kfree_strarray(line_names, ngpio);
+ if (IS_ERR(pdev)) {
+ pr_err("error registering device");
+ return PTR_ERR(pdev);
+ }
+
+ gpio_mockup_pdevs[idx] = pdev;
+
+ return 0;
+}
+
+static int __init gpio_mockup_init(void)
+{
+ int i, num_chips, err;
+
if ((gpio_mockup_num_ranges < 2) ||
(gpio_mockup_num_ranges % 2) ||
(gpio_mockup_num_ranges > GPIO_MOCKUP_MAX_RANGES))
@@ -540,54 +583,13 @@ static int __init gpio_mockup_init(void)
}
for (i = 0; i < num_chips; i++) {
- memset(properties, 0, sizeof(properties));
- memset(&pdevinfo, 0, sizeof(pdevinfo));
- prop = 0;
- line_names = NULL;
-
- snprintf(chip_label, sizeof(chip_label),
- "gpio-mockup-%c", i + 'A');
- properties[prop++] = PROPERTY_ENTRY_STRING("chip-label",
- chip_label);
-
- base = gpio_mockup_range_base(i);
- if (base >= 0)
- properties[prop++] = PROPERTY_ENTRY_U32("gpio-base",
- base);
-
- ngpio = base < 0 ? gpio_mockup_range_ngpio(i)
- : gpio_mockup_range_ngpio(i) - base;
- properties[prop++] = PROPERTY_ENTRY_U16("nr-gpios", ngpio);
-
- if (gpio_mockup_named_lines) {
- line_names = gpio_mockup_make_line_names(chip_label,
- ngpio);
- if (!line_names) {
- platform_driver_unregister(&gpio_mockup_driver);
- gpio_mockup_unregister_pdevs();
- return -ENOMEM;
- }
-
- properties[prop++] = PROPERTY_ENTRY_STRING_ARRAY_LEN(
- "gpio-line-names",
- line_names, ngpio);
- }
-
- pdevinfo.name = "gpio-mockup";
- pdevinfo.id = i;
- pdevinfo.properties = properties;
-
- pdev = platform_device_register_full(&pdevinfo);
- kfree_strarray(line_names, ngpio);
- if (IS_ERR(pdev)) {
- pr_err("error registering device");
+ err = gpio_mockup_register_chip(i);
+ if (err) {
platform_driver_unregister(&gpio_mockup_driver);
gpio_mockup_unregister_pdevs();
debugfs_remove_recursive(gpio_mockup_dbg_dir);
- return PTR_ERR(pdev);
+ return err;
}
-
- gpio_mockup_pdevs[i] = pdev;
}
return 0;
--
2.26.1
prev parent reply other threads:[~2020-09-28 10:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-28 10:41 [PATCH v2 0/9] gpio: mockup: refactoring + documentation Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 1/9] lib: string_helpers: provide kfree_strarray() Bartosz Golaszewski
2020-09-28 12:55 ` Andy Shevchenko
2020-09-28 13:04 ` Bartosz Golaszewski
2020-09-28 13:56 ` Andy Shevchenko
2020-09-28 15:59 ` Joe Perches
2020-09-28 16:02 ` Bartosz Golaszewski
2020-09-28 16:06 ` Joe Perches
2020-09-28 16:25 ` Andy Shevchenko
2020-09-29 8:10 ` David Laight
2020-09-29 8:49 ` Andy Shevchenko
2020-09-29 9:42 ` Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 2/9] Documentation: gpio: add documentation for gpio-mockup Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 3/9] gpio: mockup: drop unneeded includes Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 4/9] gpio: mockup: use KBUILD_MODNAME Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 5/9] gpio: mockup: use pr_fmt() Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 6/9] gpio: mockup: remove unneeded return statement Bartosz Golaszewski
2020-09-28 10:41 ` [PATCH v2 7/9] gpio: mockup: pass the chip label as device property Bartosz Golaszewski
2020-09-28 13:00 ` Andy Shevchenko
2020-09-28 13:13 ` Bartosz Golaszewski
2020-09-28 14:00 ` Andy Shevchenko
2020-09-28 14:52 ` Bartosz Golaszewski
2020-09-28 16:24 ` Andy Shevchenko
2020-09-28 10:41 ` [PATCH v2 8/9] gpio: mockup: use the generic 'gpio-line-names' property Bartosz Golaszewski
2020-09-28 13:01 ` Andy Shevchenko
2020-09-28 10:41 ` Bartosz Golaszewski [this message]
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