The patch titled Char: ds1286, eliminate busy waiting has been removed from the -mm tree. Its filename was char-ds1286-eliminate-busy-waiting.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: Char: ds1286, eliminate busy waiting From: Jiri Slaby <jirislaby@xxxxxxxxx> ds1286_get_time(); is not called from atomic context, sleep for 20 ms is better choice than a (home-made) busy waiting for such a situation. Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx> Acked-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/char/ds1286.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff -puN drivers/char/ds1286.c~char-ds1286-eliminate-busy-waiting drivers/char/ds1286.c --- a/drivers/char/ds1286.c~char-ds1286-eliminate-busy-waiting +++ a/drivers/char/ds1286.c @@ -443,7 +443,6 @@ static void ds1286_get_time(struct rtc_t { unsigned char save_control; unsigned long flags; - unsigned long uip_watchdog = jiffies; /* * read RTC once any update in progress is done. The update @@ -456,8 +455,7 @@ static void ds1286_get_time(struct rtc_t */ if (ds1286_is_updating() != 0) - while (time_before(jiffies, uip_watchdog + 2*HZ/100)) - barrier(); + msleep(20); /* * Only the values that we read from the RTC are set. We leave _ Patches currently in -mm which might be from jirislaby@xxxxxxxxx are origin.patch char-sx-remove-bogus-iomap.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html