linux-kernel - [PATCH v2 3/4] platform/x86: xiaomi-wmi: Drop unnecessary NULL checks

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Date: Tue,  2 Apr 2024 16:30:58 +0200
From: Armin Wolf <W_Armin@....de>
To: hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com
Cc: corbet@....net,
	sathyanarayanan.kuppuswamy@...ux.intel.com,
	linux-doc@...r.kernel.org,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] platform/x86: xiaomi-wmi: Drop unnecessary NULL checks

The WMI driver core already makes sure that:

- a valid WMI device is passed to each callback
- the notify() callback runs after the probe() callback succeeds

Remove the unnecessary NULL checks.

Compile-tested only.

Signed-off-by: Armin Wolf <W_Armin@....de>
---
 drivers/platform/x86/xiaomi-wmi.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/platform/x86/xiaomi-wmi.c b/drivers/platform/x86/xiaomi-wmi.c
index 7efbdc111803..cbed29ca502a 100644
--- a/drivers/platform/x86/xiaomi-wmi.c
+++ b/drivers/platform/x86/xiaomi-wmi.c
@@ -38,7 +38,7 @@ static int xiaomi_wmi_probe(struct wmi_device *wdev, const void *context)
 	struct xiaomi_wmi *data;
 	int ret;

-	if (wdev == NULL || context == NULL)
+	if (!context)
 		return -EINVAL;

 	data = devm_kzalloc(&wdev->dev, sizeof(struct xiaomi_wmi), GFP_KERNEL);
@@ -66,14 +66,7 @@ static int xiaomi_wmi_probe(struct wmi_device *wdev, const void *context)

 static void xiaomi_wmi_notify(struct wmi_device *wdev, union acpi_object *dummy)
 {
-	struct xiaomi_wmi *data;
-
-	if (wdev == NULL)
-		return;
-
-	data = dev_get_drvdata(&wdev->dev);
-	if (data == NULL)
-		return;
+	struct xiaomi_wmi *data = dev_get_drvdata(&wdev->dev);

 	mutex_lock(&data->key_lock);
 	input_report_key(data->input_dev, data->key_code, 1);
--
2.39.2