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drm/i915/dsi: Drop double check ACPI companion device for NULL

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acpi_dev_get_resources() does perform the NULL pointer check against
ACPI companion device which is given as function parameter. Thus,
there is no need to duplicate this check in the caller.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211222154033.6770-1-andriy.shevchenko@linux.intel.com
This commit is contained in:
Andy Shevchenko 2021-12-22 17:40:33 +02:00 committed by Jani Nikula
parent 798c5daf3c
commit f7747be141
1 changed files with 9 additions and 17 deletions
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26
drivers/gpu/drm/i915/display/intel_dsi_vbt.c
View file

@ -426,24 +426,16 @@ static void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,
const u16 slave_addr)
{
struct drm_device *drm_dev = intel_dsi->base.base.dev;
struct device *dev = drm_dev->dev;
struct acpi_device *acpi_dev;
struct list_head resource_list;
struct i2c_adapter_lookup lookup;
struct acpi_device *adev = ACPI_COMPANION(drm_dev->dev);
struct i2c_adapter_lookup lookup = {
.slave_addr = slave_addr,
.intel_dsi = intel_dsi,
.dev_handle = acpi_device_handle(adev),
};
LIST_HEAD(resource_list);
acpi_dev = ACPI_COMPANION(dev);
if (acpi_dev) {
memset(&lookup, 0, sizeof(lookup));
lookup.slave_addr = slave_addr;
lookup.intel_dsi = intel_dsi;
lookup.dev_handle = acpi_device_handle(acpi_dev);
INIT_LIST_HEAD(&resource_list);
acpi_dev_get_resources(acpi_dev, &resource_list,
i2c_adapter_lookup,
&lookup);
acpi_dev_free_resource_list(&resource_list);
}
acpi_dev_get_resources(adev, &resource_list, i2c_adapter_lookup, &lookup);
acpi_dev_free_resource_list(&resource_list);
}
#else
static inline void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,