x86: microcode_amd: fix compile warning
Impact: fix build warning
CC arch/x86/kernel/microcode_amd.o
arch/x86/kernel/microcode_amd.c: In function ‘request_microcode_fw’:
arch/x86/kernel/microcode_amd.c:393: warning: passing argument 2 of ‘generic_load_microcode’ discards qualifiers from pointer target type
(Respect "const" qualifier of firmware->data.)
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index a8a0ec6..89b386c 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -225,8 +225,8 @@
uci->cpu_sig.rev = rev;
}
-static void *get_next_ucode(u8 *buf, unsigned int size,
- int (*get_ucode_data)(void *, const void *, size_t),
+static void *get_next_ucode(const u8 *buf, unsigned int size,
+ int (*get_ucode_data)(void *, const u8 *, size_t),
unsigned int *mc_size)
{
unsigned int total_size;
@@ -268,8 +268,8 @@
}
-static int install_equiv_cpu_table(u8 *buf,
- int (*get_ucode_data)(void *, const void *, size_t))
+static int install_equiv_cpu_table(const u8 *buf,
+ int (*get_ucode_data)(void *, const u8 *, size_t))
{
#define UCODE_CONTAINER_HEADER_SIZE 12
u8 *container_hdr[UCODE_CONTAINER_HEADER_SIZE];
@@ -311,11 +311,13 @@
}
}
-static int generic_load_microcode(int cpu, void *data, size_t size,
- int (*get_ucode_data)(void *, const void *, size_t))
+static int generic_load_microcode(int cpu, const u8 *data, size_t size,
+ int (*get_ucode_data)(void *, const u8 *, size_t))
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
- u8 *ucode_ptr = data, *new_mc = NULL, *mc;
+ const u8 *ucode_ptr = data;
+ void *new_mc = NULL;
+ void *mc;
int new_rev = uci->cpu_sig.rev;
unsigned int leftover;
unsigned long offset;
@@ -368,7 +370,7 @@
return (int)leftover;
}
-static int get_ucode_fw(void *to, const void *from, size_t n)
+static int get_ucode_fw(void *to, const u8 *from, size_t n)
{
memcpy(to, from, n);
return 0;
@@ -390,7 +392,7 @@
return ret;
}
- ret = generic_load_microcode(cpu, (void*)firmware->data, firmware->size,
+ ret = generic_load_microcode(cpu, firmware->data, firmware->size,
&get_ucode_fw);
release_firmware(firmware);