[PATCH 1/3] cmd: avoid duplicate weak flush_dcache_all()

[Heinrich Schuchardt]

If we have multiple weak implementations of functions, the linker might
choose any of these. ARM and RISC-V already provide a weak implementation
of flush_dcache_all().

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 cmd/cache.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmd/cache.c b/cmd/cache.c
index 0254ff17f9b..16fa0f7c652 100644
--- a/cmd/cache.c
+++ b/cmd/cache.c
@@ -52,11 +52,14 @@ static int do_icache(struct cmd_tbl *cmdtp, int flag, int argc,
 	return 0;
 }
 
+/* ARM and RISC-V define a weak flush_dcache_all() themselves. */
+#if !defined(CONFIG_ARM) && !defined(CONFIG_RISCV)
 void __weak flush_dcache_all(void)
 {
 	puts("No arch specific flush_dcache_all available!\n");
 	/* please define arch specific flush_dcache_all */
 }
+#endif
 
 static int do_dcache(struct cmd_tbl *cmdtp, int flag, int argc,
 		     char *const argv[])
-- 
2.43.0