cmd: date: Handle -ENOSYS return from dm_rtc_reset()

In case dm_rtc_reset() returns -ENOSYS, it means the .reset callback
in RTC driver is not implemented, likely because the callback is not
needed. Handle the -ENOSYS return code as success and proceed, else
the 'date reset' invocation incorrectly prints a bogus warning:
"## Failed to set date after RTC reset".

Signed-off-by: Marek Vasut <marex@nabladev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/cmd/date.c b/cmd/date.c
index 67cfaed0d48ff3d04f4ed7b817d04de9f60902e2..8d15018253bef98f8b658933fe0e285b6300f838 100644 (file)
--- a/cmd/date.c
+++ b/cmd/date.c
@@ -44,7 +44,7 @@ static int do_date(struct cmd_tbl *cmdtp, int flag, int argc,
                if (strcmp(argv[1],"reset") == 0) {
                        puts ("Reset RTC...\n");
                        rcode = dm_rtc_reset(dev);
-                       if (!rcode)
+                       if (!rcode || rcode == -ENOSYS)
                                rcode = dm_rtc_set(dev, &default_tm);
                        if (rcode)
                                puts("## Failed to set date after RTC reset\n");