Dan Williams wrote:
Weird, does the kernel not do something that fprintf() _does_ do here? I tested with a short C program that mimics the behavior of this chunk of code, and "%.2x" didn't work, but "%.2hhx" certainly did. "hh" is supposed to mean "A following integer conversion corresponds to a signed char or unsigned char argument". The original conversion was converting stuff from la-la land after the first 4 bytes (in both softmac and my testcase), and "hh" solved it in the testcase. I did try casting to char, but glibc pretty much ignored that.
I also found that casting with char gave the same result as no cast, but that a u8 cast worked. I guess printk is _almost_ like fprintf.
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