From c7657ac0c3e4d4ab569296911164b7a2b0ff871a Mon Sep 17 00:00:00 2001
From: Borislav Petkov <borislav.petkov@amd.com>
Date: Mon, 1 Nov 2010 23:36:53 +0100
Subject: [PATCH] x86, microcode, AMD: Cleanup code a bit
get_ucode_data is a memcpy() wrapper which always returns 0. Move it
into the header and make it an inline. Remove all code checking its
return value and turn it into a void.
There should be no functionality change resulting from this patch.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---
arch/x86/include/asm/microcode.h | 6 ++++++
arch/x86/kernel/microcode_amd.c | 25 +++++--------------------
2 files changed, 11 insertions(+), 20 deletions(-)
diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h
index ef51b501e22a6..24215072d0e1e 100644
--- a/arch/x86/include/asm/microcode.h
+++ b/arch/x86/include/asm/microcode.h
@@ -48,6 +48,12 @@ static inline struct microcode_ops * __init init_intel_microcode(void)
#ifdef CONFIG_MICROCODE_AMD
extern struct microcode_ops * __init init_amd_microcode(void);
+
+static inline void get_ucode_data(void *to, const u8 *from, size_t n)
+{
+ memcpy(to, from, n);
+}
+
#else
static inline struct microcode_ops * __init init_amd_microcode(void)
{
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index 383d4f8ec9e11..15831336bda83 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -155,12 +155,6 @@ static int apply_microcode_amd(int cpu)
return 0;
}
-static int get_ucode_data(void *to, const u8 *from, size_t n)
-{
- memcpy(to, from, n);
- return 0;
-}
-
static void *
get_next_ucode(const u8 *buf, unsigned int size, unsigned int *mc_size)
{
@@ -168,8 +162,7 @@ get_next_ucode(const u8 *buf, unsigned int size, unsigned int *mc_size)
u8 section_hdr[UCODE_CONTAINER_SECTION_HDR];
void *mc;
- if (get_ucode_data(section_hdr, buf, UCODE_CONTAINER_SECTION_HDR))
- return NULL;
+ get_ucode_data(section_hdr, buf, UCODE_CONTAINER_SECTION_HDR);
if (section_hdr[0] != UCODE_UCODE_TYPE) {
pr_err("error: invalid type field in container file section header\n");
@@ -187,12 +180,8 @@ get_next_ucode(const u8 *buf, unsigned int size, unsigned int *mc_size)
if (!mc)
return NULL;
- if (get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR, total_size)) {
- vfree(mc);
- mc = NULL;
- } else {
- *mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
- }
+ get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR, total_size);
+ *mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
return mc;
}
@@ -203,8 +192,7 @@ static int install_equiv_cpu_table(const u8 *buf)
unsigned int *buf_pos = (unsigned int *)container_hdr;
unsigned long size;
- if (get_ucode_data(&container_hdr, buf, UCODE_CONTAINER_HEADER_SIZE))
- return 0;
+ get_ucode_data(&container_hdr, buf, UCODE_CONTAINER_HEADER_SIZE);
size = buf_pos[2];
@@ -220,10 +208,7 @@ static int install_equiv_cpu_table(const u8 *buf)
}
buf += UCODE_CONTAINER_HEADER_SIZE;
- if (get_ucode_data(equiv_cpu_table, buf, size)) {
- vfree(equiv_cpu_table);
- return 0;
- }
+ get_ucode_data(equiv_cpu_table, buf, size);
return size + UCODE_CONTAINER_HEADER_SIZE; /* add header length */
}
--
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