Michael Ellerman f7a678a8fa powerpc/udbg: Make it safe to call udbg_printf() always ...

Make udbg_printf() check if udbg_putc is set, and if not just return.
This makes it safe to call udbg_printf() anytime, even when a udbg
backend has not been registered, which means we can avoid some ifdefs
at call sites.

Signed-off-by: Qian Cai <cai@lca.pw>
[mpe: Split out of larger patch, write change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2019-10-11 19:33:25 +11:00

3.9 KiB

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