diff options
Diffstat (limited to 'drivers/platform/x86/x86-android-tablets/core.c')
| -rw-r--r-- | drivers/platform/x86/x86-android-tablets/core.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/drivers/platform/x86/x86-android-tablets/core.c b/drivers/platform/x86/x86-android-tablets/core.c index a3415f1c0b5f..1427a9a39008 100644 --- a/drivers/platform/x86/x86-android-tablets/core.c +++ b/drivers/platform/x86/x86-android-tablets/core.c @@ -26,19 +26,19 @@ static struct platform_device *x86_android_tablet_device; /* - * This helper allows getting a gpio_desc *before* the actual device consuming - * the GPIO has been instantiated. This function _must_ only be used to handle - * this special case such as e.g. : + * This helper allows getting a GPIO descriptor *before* the actual device + * consuming it has been instantiated. This function MUST only be used to + * handle this special case such as, e.g.: * * 1. Getting an IRQ from a GPIO for i2c_board_info.irq which is passed to * i2c_client_new() to instantiate i2c_client-s; or - * 2. Calling desc_to_gpio() to get an old style GPIO number for gpio_keys + * 2. Calling desc_to_gpio() to get an old style GPIO number for gpio-keys * platform_data which still uses old style GPIO numbers. * - * Since the consuming device has not been instatiated yet a dynamic lookup - * is generated using the special x86_android_tablet dev for dev_id. + * Since the consuming device has not been instantiated yet a dynamic lookup + * is generated using the special x86_android_tablet device for dev_id. * - * For normal GPIO lookups a standard static gpiod_lookup_table _must_ be used. + * For normal GPIO lookups a standard static struct gpiod_lookup_table MUST be used. */ int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id, bool active_low, enum gpiod_flags dflags, @@ -52,10 +52,8 @@ int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id, return -ENOMEM; lookup->dev_id = KBUILD_MODNAME; - lookup->table[0].key = chip; - lookup->table[0].chip_hwnum = pin; - lookup->table[0].con_id = con_id; - lookup->table[0].flags = active_low ? GPIO_ACTIVE_LOW : GPIO_ACTIVE_HIGH; + lookup->table[0] = + GPIO_LOOKUP(chip, pin, con_id, active_low ? GPIO_ACTIVE_LOW : GPIO_ACTIVE_HIGH); gpiod_add_lookup_table(lookup); gpiod = devm_gpiod_get(&x86_android_tablet_device->dev, con_id, dflags); @@ -89,7 +87,7 @@ int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data) /* * The DSDT may already reference the GSI in a device skipped by * acpi_quirk_skip_i2c_client_enumeration(). Unregister the GSI - * to avoid EBUSY errors in this case. + * to avoid -EBUSY errors in this case. */ acpi_unregister_gsi(data->index); irq = acpi_register_gsi(NULL, data->index, data->trigger, data->polarity); @@ -278,25 +276,25 @@ static void x86_android_tablet_remove(struct platform_device *pdev) { int i; - for (i = 0; i < serdev_count; i++) { + for (i = serdev_count - 1; i >= 0; i--) { if (serdevs[i]) serdev_device_remove(serdevs[i]); } kfree(serdevs); - for (i = 0; i < pdev_count; i++) + for (i = pdev_count - 1; i >= 0; i--) platform_device_unregister(pdevs[i]); kfree(pdevs); kfree(buttons); - for (i = 0; i < spi_dev_count; i++) + for (i = spi_dev_count - 1; i >= 0; i--) spi_unregister_device(spi_devs[i]); kfree(spi_devs); - for (i = 0; i < i2c_client_count; i++) + for (i = i2c_client_count - 1; i >= 0; i--) i2c_unregister_device(i2c_clients[i]); kfree(i2c_clients); @@ -343,7 +341,7 @@ static __init int x86_android_tablet_probe(struct platform_device *pdev) gpiod_add_lookup_table(gpiod_lookup_tables[i]); if (dev_info->init) { - ret = dev_info->init(); + ret = dev_info->init(&pdev->dev); if (ret < 0) { x86_android_tablet_remove(pdev); return ret; @@ -381,7 +379,7 @@ static __init int x86_android_tablet_probe(struct platform_device *pdev) } } - /* + 1 to make space for (optional) gpio_keys_button pdev */ + /* + 1 to make space for the (optional) gpio_keys_button platform device */ pdevs = kcalloc(dev_info->pdev_count + 1, sizeof(*pdevs), GFP_KERNEL); if (!pdevs) { x86_android_tablet_remove(pdev); @@ -434,7 +432,7 @@ static __init int x86_android_tablet_probe(struct platform_device *pdev) buttons[i] = dev_info->gpio_button[i].button; buttons[i].gpio = desc_to_gpio(gpiod); - /* Release gpiod so that gpio-keys can request it */ + /* Release GPIO descriptor so that gpio-keys can request it */ devm_gpiod_put(&x86_android_tablet_device->dev, gpiod); } |