There's currently no user of %p[iI]6, so including ip6_addr_string() in the image is a waste of bytes. It's easy enough to have the compiler elide it without removing the code completely.
The closest I can find to anybody "handling" ipv6 in U-Boot currently is in efi_net.c which does
if (ipv6) { ret = EFI_UNSUPPORTED;
As indicated in the comment, it can easily be put back, but preferably under a config knob.
Reviewed-by: Simon Glass sjg@chromium.org Signed-off-by: Rasmus Villemoes rasmus.villemoes@prevas.dk --- lib/vsprintf.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index af0a6e1dcf..c14176dd39 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -434,6 +434,9 @@ static char *uuid_string(char *buf, char *end, u8 *addr, int field_width, * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is * currently the same * + * Note: IPv6 support is currently if(0)'ed out. If you ever need + * %pI6, please add an IPV6 Kconfig knob, make your code select or + * depend on that, and change the 0 below to CONFIG_IS_ENABLED(IPV6). */ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field_width, int precision, int flags) @@ -478,7 +481,8 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, flags |= SPECIAL; /* Fallthrough */ case 'I': - if (fmt[1] == '6') + /* %pI6 currently unused */ + if (0 && fmt[1] == '6') return ip6_addr_string(buf, end, ptr, field_width, precision, flags); if (fmt[1] == '4')