arm64: alternative: simplify passing alt_region

In __apply_alternatives() we take a pointer to void which we later
assign to a pointer to struct alt_region. As all callers are passing a
pointer to struct alt_region to begin with, it's simpler and more robust
to take a pointer to struct alt region, so let's do so and avoid the
need for a temporary variable.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210416163032.10857-1-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c
index 1184c44..f6fd161 100644 (file)
--- a/arch/arm64/kernel/alternative.c
+++ b/arch/arm64/kernel/alternative.c
@@ -133,11 +133,10 @@ static void clean_dcache_range_nopatch(u64 start, u64 end)
        } while (cur += d_size, cur < end);
 }
 
-static void __apply_alternatives(void *alt_region,  bool is_module,
+static void __apply_alternatives(struct alt_region *region, bool is_module,
                                 unsigned long *feature_mask)
 {
        struct alt_instr *alt;
-       struct alt_region *region = alt_region;
        __le32 *origptr, *updptr;
        alternative_cb_t alt_cb;