From: Barnabás Pőcze <pobrn@xxxxxxxxxxxxxx> [ Upstream commit e7b2e33449e22fdbaa0247d96f31543affe6163d ] Introduce a helper function which wraps the appropriate `container_of()` macro invocation to convert a `struct device_driver` to `struct wmi_driver`. Signed-off-by: Barnabás Pőcze <pobrn@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210904175450.156801-27-pobrn@xxxxxxxxxxxxxx Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/platform/x86/wmi.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index 1b65bb61ce88..9aeb1a009097 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -676,6 +676,11 @@ static struct wmi_device *dev_to_wdev(struct device *dev) return container_of(dev, struct wmi_device, dev); } +static inline struct wmi_driver *drv_to_wdrv(struct device_driver *drv) +{ + return container_of(drv, struct wmi_driver, driver); +} + /* * sysfs interface */ @@ -794,8 +799,7 @@ static void wmi_dev_release(struct device *dev) static int wmi_dev_match(struct device *dev, struct device_driver *driver) { - struct wmi_driver *wmi_driver = - container_of(driver, struct wmi_driver, driver); + struct wmi_driver *wmi_driver = drv_to_wdrv(driver); struct wmi_block *wblock = dev_to_wblock(dev); const struct wmi_device_id *id = wmi_driver->id_table; @@ -892,8 +896,7 @@ static long wmi_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } /* let the driver do any filtering and do the call */ - wdriver = container_of(wblock->dev.dev.driver, - struct wmi_driver, driver); + wdriver = drv_to_wdrv(wblock->dev.dev.driver); if (!try_module_get(wdriver->driver.owner)) { ret = -EBUSY; goto out_ioctl; @@ -926,8 +929,7 @@ static const struct file_operations wmi_fops = { static int wmi_dev_probe(struct device *dev) { struct wmi_block *wblock = dev_to_wblock(dev); - struct wmi_driver *wdriver = - container_of(dev->driver, struct wmi_driver, driver); + struct wmi_driver *wdriver = drv_to_wdrv(dev->driver); int ret = 0; char *buf; @@ -990,8 +992,7 @@ static int wmi_dev_probe(struct device *dev) static void wmi_dev_remove(struct device *dev) { struct wmi_block *wblock = dev_to_wblock(dev); - struct wmi_driver *wdriver = - container_of(dev->driver, struct wmi_driver, driver); + struct wmi_driver *wdriver = drv_to_wdrv(dev->driver); if (wdriver->filter_callback) { misc_deregister(&wblock->char_dev); @@ -1296,15 +1297,12 @@ static void acpi_wmi_notify_handler(acpi_handle handle, u32 event, /* If a driver is bound, then notify the driver. */ if (wblock->dev.dev.driver) { - struct wmi_driver *driver; + struct wmi_driver *driver = drv_to_wdrv(wblock->dev.dev.driver); struct acpi_object_list input; union acpi_object params[1]; struct acpi_buffer evdata = { ACPI_ALLOCATE_BUFFER, NULL }; acpi_status status; - driver = container_of(wblock->dev.dev.driver, - struct wmi_driver, driver); - input.count = 1; input.pointer = params; params[0].type = ACPI_TYPE_INTEGER; -- 2.35.1
