tiny-printf variant doesn't know how to handle %llu format string, but both tiny-printf and print_size can meet in SPL when TFTP is used to obtain main u-boot image. This is known to lead to critical boot issue at AM335x platform when printf is catched in infinite loop.
To avoid such issues and make print_size function tiny-printf friendly, use %u instead of %luu. Note, that the size value is guaranteed to be less than 1024 in this conditional branch, so the cast to unsigned int is safe.
Signed-off-by: Matwey V. Kornilov matwey.kornilov@gmail.com --- lib/display_options.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/display_options.c b/lib/display_options.c index c08a87e316..4da1f5244f 100644 --- a/lib/display_options.c +++ b/lib/display_options.c @@ -107,7 +107,12 @@ void print_size(uint64_t size, const char *s) }
if (!c) { - printf("%llu Bytes%s", size, s); + /* + * SPL tiny-printf is not capable for printing uint64_t. + * We have just checked that the size is small enought to fit + * unsigned int safely. + */ + printf("%u Bytes%s", (unsigned int)size, s); return; }