linux-kernel - [PATCH] platform: x86: Remove acpi_has

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Message-Id: <20190722031158.70311-1-skunberg.kelsey@gmail.com>
Date:   Sun, 21 Jul 2019 21:11:58 -0600
From:   Kelsey Skunberg <skunberg.kelsey@...il.com>
To:     dvhart@...radead.org, andy@...radead.org,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     bjorn@...gaas.com, rjw@...ysocki.net, skunberg.kelsey@...il.com,
        skhan@...uxfoundation.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: [PATCH] platform: x86: Remove acpi_has_method() call in wmi.c

acpi_has_method() is unnecessary within __query_block() and should be
removed to avoid extra work.

wc_status is initialized to AE_ERROR before the acpi_has_method() call.
acpi_has_method() and acpi_execute_simple_method() failing due to the
method not existing will result in the same outcome from __query_block().

Signed-off-by: Kelsey Skunberg <skunberg.kelsey@...il.com>
---
 drivers/platform/x86/wmi.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 784cea8572c2..59e9aa0f9643 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -340,9 +340,7 @@ static acpi_status __query_block(struct wmi_block *wblock, u8 instance,
 		 * expensive, but have no corresponding WCxx method. So we
 		 * should not fail if this happens.
 		 */
-		if (acpi_has_method(handle, wc_method))
-			wc_status = acpi_execute_simple_method(handle,
-								wc_method, 1);
+		wc_status = acpi_execute_simple_method(handle, wc_method, 1);
 	}
 
 	strcpy(method, "WQ");
-- 
2.20.1