From: Borislav Petkov <borislav.petkov@amd.com>
Date: Fri, 2 Dec 2011 15:50:04 +0000 (+0100)
Subject: x86, microcode, AMD: Add a vendor-specific exit function
X-Git-Tag: next-20111220~28^2~1^2^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f72c1a576565a4927d650218e183ab5053ab8c3a;p=karo-tx-linux.git

x86, microcode, AMD: Add a vendor-specific exit function

This will be used to do cleanup work before the driver exits.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---

diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h
index 24215072d0e1..4ebe157bf73d 100644
--- a/arch/x86/include/asm/microcode.h
+++ b/arch/x86/include/asm/microcode.h
@@ -48,6 +48,7 @@ static inline struct microcode_ops * __init init_intel_microcode(void)
 
 #ifdef CONFIG_MICROCODE_AMD
 extern struct microcode_ops * __init init_amd_microcode(void);
+extern void __exit exit_amd_microcode(void);
 
 static inline void get_ucode_data(void *to, const u8 *from, size_t n)
 {
@@ -59,6 +60,7 @@ static inline struct microcode_ops * __init init_amd_microcode(void)
 {
 	return NULL;
 }
+static inline void __exit exit_amd_microcode(void) {}
 #endif
 
 #endif /* _ASM_X86_MICROCODE_H */
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index d494799aafcd..e8a68c2a4364 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -353,3 +353,7 @@ struct microcode_ops * __init init_amd_microcode(void)
 {
 	return &microcode_amd_ops;
 }
+
+void __exit exit_amd_microcode(void)
+{
+}
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 9d46f5e43b51..9302e2d0eb4b 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -563,6 +563,8 @@ module_init(microcode_init);
 
 static void __exit microcode_exit(void)
 {
+	struct cpuinfo_x86 *c = &cpu_data(0);
+
 	microcode_dev_exit();
 
 	unregister_hotcpu_notifier(&mc_cpu_notifier);
@@ -580,6 +582,9 @@ static void __exit microcode_exit(void)
 
 	microcode_ops = NULL;
 
+	if (c->x86_vendor == X86_VENDOR_AMD)
+		exit_amd_microcode();
+
 	pr_info("Microcode Update Driver: v" MICROCODE_VERSION " removed.\n");
 }
 module_exit(microcode_exit);