From: Matthijs van Otterdijk <thotter@gmail.com>
Date: Sat, 6 Jan 2007 00:37:03 +0000 (-0800)
Subject: [PATCH] fix the toshiba_acpi write_lcd return value
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c8af57eb76fbd70c7f5b421b065fd55d096e2bff;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] fix the toshiba_acpi write_lcd return value

write_lcd() in toshiba_acpi returns 0 on success since the big ACPI patch
merged in 2.6.20-rc2.  It should return count.

Signed-off-by: Matthijs van Otterdijk <thotter@gmail.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c
index 88aeccbafaaf..d9b651ffcdc0 100644
--- a/drivers/acpi/toshiba_acpi.c
+++ b/drivers/acpi/toshiba_acpi.c
@@ -321,13 +321,16 @@ static int set_lcd_status(struct backlight_device *bd)
 static unsigned long write_lcd(const char *buffer, unsigned long count)
 {
 	int value;
-	int ret = count;
+	int ret;
 
 	if (sscanf(buffer, " brightness : %i", &value) == 1 &&
-	    value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS)
+	    value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
 		ret = set_lcd(value);
-	else
+		if (ret == 0)
+			ret = count;
+	} else {
 		ret = -EINVAL;
+	}
 	return ret;
 }