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From: "Michał Kępień" <kernel@kempniu.pl>
To: Jonathan Woithe <jwoithe@just42.net>,
	Darren Hart <dvhart@infradead.org>,
	Andy Shevchenko <andy@infradead.org>
Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 04/11] platform/x86: fujitsu-laptop: simplify set_lcd_level()
Date: Wed,  5 Apr 2017 08:49:03 +0200	[thread overview]
Message-ID: <20170405064910.3162-5-kernel@kempniu.pl> (raw)
In-Reply-To: <20170405064910.3162-1-kernel@kempniu.pl>

acpi_execute_simple_method() takes a method parameter which tells it to
look for the given method underneath the given handle, so calling
acpi_get_handle() beforehand is redundant.  Replace the call to
acpi_get_handle() with a call to acpi_execute_simple_method(), thus
eliminating the need for a local variable storing the handle.  Update
debug message to reflect this change.  Also do not assign a default
value to status as it has no influence on execution flow.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
---
 drivers/platform/x86/fujitsu-laptop.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 2f563aa00592..6d4a2a36716b 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -358,8 +358,7 @@ static enum led_brightness eco_led_get(struct led_classdev *cdev)
 
 static int set_lcd_level(int level)
 {
-	acpi_status status = AE_OK;
-	acpi_handle handle = NULL;
+	acpi_status status;
 	char *method;
 
 	switch (use_alt_lcd_levels) {
@@ -377,16 +376,14 @@ static int set_lcd_level(int level)
 	if (level < 0 || level >= fujitsu_bl->max_brightness)
 		return -EINVAL;
 
-	status = acpi_get_handle(fujitsu_bl->acpi_handle, method, &handle);
+	status = acpi_execute_simple_method(fujitsu_bl->acpi_handle, method,
+					    level);
 	if (ACPI_FAILURE(status)) {
-		vdbg_printk(FUJLAPTOP_DBG_ERROR, "%s not present\n", method);
+		vdbg_printk(FUJLAPTOP_DBG_ERROR, "Failed to evaluate %s\n",
+			    method);
 		return -ENODEV;
 	}
 
-	status = acpi_execute_simple_method(handle, NULL, level);
-	if (ACPI_FAILURE(status))
-		return -ENODEV;
-
 	return 0;
 }
 
-- 
2.12.2

  parent reply	other threads:[~2017-04-05  6:49 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-05  6:48 [PATCH v2 00/11] fujitsu-laptop: backlight cleanup Michał Kępień
2017-04-05  6:49 ` [PATCH v2 01/11] platform/x86: fujitsu-laptop: only handle backlight when appropriate Michał Kępień
2017-04-05  6:49 ` [PATCH v2 02/11] platform/x86: fujitsu-laptop: switch to a managed backlight device Michał Kępień
2017-04-05  6:49 ` [PATCH v2 03/11] platform/x86: fujitsu-laptop: merge set_lcd_level_alt() into set_lcd_level() Michał Kępień
2017-04-07 11:53   ` Jonathan Woithe
2017-04-07 12:03     ` Jonathan Woithe
2017-04-05  6:49 ` Michał Kępień [this message]
2017-04-05  6:49 ` [PATCH v2 05/11] platform/x86: fujitsu-laptop: sync brightness in set_lcd_level() Michał Kępień
2017-04-05  6:49 ` [PATCH v2 06/11] platform/x86: fujitsu-laptop: clean up use_alt_lcd_levels handling Michał Kępień
2017-04-05  6:49 ` [PATCH v2 07/11] platform/x86: fujitsu-laptop: make disable_brightness_adjust a boolean Michał Kępień
2017-04-05  6:49 ` [PATCH v2 08/11] platform/x86: fujitsu-laptop: ignore errors when setting backlight power Michał Kępień
2017-04-05  6:49 ` [PATCH v2 09/11] platform/x86: fujitsu-laptop: do not log set_lcd_level() failures in bl_update_status() Michał Kępień
2017-04-05  6:49 ` [PATCH v2 10/11] platform/x86: fujitsu-laptop: account for backlight power when determining brightness Michał Kępień
2017-04-05  6:49 ` [PATCH v2 11/11] platform/x86: fujitsu-laptop: remove redundant fields from struct fujitsu_bl Michał Kępień
2017-04-05 15:36 ` [PATCH v2 00/11] fujitsu-laptop: backlight cleanup Darren Hart
2017-04-05 19:55   ` Michał Kępień
2017-04-06  0:45     ` Jonathan Woithe
2017-04-06  3:07       ` Darren Hart
2017-04-07 12:11         ` Jonathan Woithe
2017-04-07 17:57           ` Darren Hart

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