linux-kernel - [PATCH V4 1/3] misc/pvpanic: return 0 for empty body register function

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Message-Id: <1545126403-25747-1-git-send-email-peng.hao2@zte.com.cn>
Date:   Tue, 18 Dec 2018 17:46:41 +0800
From:   Peng Hao <peng.hao2@....com.cn>
To:     gregkh@...uxfoundation.org, arnd@...db.de,
        andy.shevchenko@...il.com
Cc:     linux-kernel@...r.kernel.org, Peng Hao <peng.hao2@....com.cn>
Subject: [PATCH V4 1/3]  misc/pvpanic: return 0 for empty body register function

Return 0 for empty body register function normally.

Signed-off-by: Peng Hao <peng.hao2@....com.cn>
---
QEMU community requires additional PCI devices to simulate PVPANIC devices
so that some architectures can not occupy precious less than 4G of memory 
space.

 drivers/misc/pvpanic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic.c
index 3150dc2..f84ed30 100644
--- a/drivers/misc/pvpanic.c
+++ b/drivers/misc/pvpanic.c
@@ -125,7 +125,7 @@ static void pvpanic_unregister_acpi_driver(void)
 #else
 static int pvpanic_register_acpi_driver(void)
 {
-	return -ENODEV;
+	return 0;
 }
 
 static void pvpanic_unregister_acpi_driver(void) {}
-- 
1.8.3.1