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[1/2] eeepc-wmi: Use acpi_dev_present()

Message ID d36c5ce68d2757834f2954a0555a258c20dd6b62.1453060661.git.lukas@wunner.de (mailing list archive)
State Deferred, archived
Headers show

Commit Message

Lukas Wunner Jan. 17, 2016, 8:49 p.m. UTC 
Use shiny new acpi_dev_present() and remove all the boilerplate
to search for a particular ACPI device. No functional change.
Cf. 2d12b6b381ba ("ACPI / utils: Add acpi_dev_present()").

Cc: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Darren Hart <dvhart@linux.intel.com>
---
 drivers/platform/x86/eeepc-wmi.c | 24 ++----------------------
 1 file changed, 2 insertions(+), 22 deletions(-)
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Patch

diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index 14fd2ec..e1490db 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -204,30 +204,10 @@  static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
 	}
 }
 
-static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
-						 void *context, void **retval)
-{
-	pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
-	*(bool *)context = true;
-	return AE_CTRL_TERMINATE;
-}
-
-static int eeepc_wmi_check_atkd(void)
-{
-	acpi_status status;
-	bool found = false;
-
-	status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
-				  &found, NULL);
-
-	if (ACPI_FAILURE(status) || !found)
-		return 0;
-	return -1;
-}
-
 static int eeepc_wmi_probe(struct platform_device *pdev)
 {
-	if (eeepc_wmi_check_atkd()) {
+	if (acpi_dev_present(EEEPC_ACPI_HID)) {
+		pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
 		pr_warn("WMI device present, but legacy ATKD device is also "
 			"present and enabled\n");
 		pr_warn("You probably booted with acpi_osi=\"Linux\" or "