x86/vdso: Use __arch_get_vdso_data() to access vdso data

The implementation details of the vdso_data access will change.
Prepare for that by using the existing helper function.

Signed-off-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/all/[email protected]

Author: t-8ch

arch/x86/include/asm/vdso/getrandom.h

@@ -32,8 +32,8 @@ static __always_inline ssize_t getrandom_syscall(void *buffer, size_t len, unsig
 
 static __always_inline const struct vdso_rng_data *__arch_get_vdso_rng_data(void)
 {
-	if (IS_ENABLED(CONFIG_TIME_NS) && __vdso_data->clock_mode == VDSO_CLOCKMODE_TIMENS)
-		return (void *)&__vdso_rng_data + ((void *)&__timens_vdso_data - (void *)&__vdso_data);
+	if (IS_ENABLED(CONFIG_TIME_NS) && __arch_get_vdso_data()->clock_mode == VDSO_CLOCKMODE_TIMENS)
+		return (void *)&__vdso_rng_data + ((void *)&__timens_vdso_data - (void *)__arch_get_vdso_data());
 	return &__vdso_rng_data;
 }