From ecec74bbfc6fb1885355aa0337f3452146e8caff Mon Sep 17 00:00:00 2001 From: Peter Oberparleiter Date: Thu, 20 Jun 2024 14:20:26 +0200 Subject: s390/sclp: Suppress unnecessary Store Data warning On systems that do not support Store Data events (such as when running as KVM guest) the following warning message appears during boot: sclp_sd: Store Data request failed (eq=2, di=3, response=0x40f0, flags=0x00, status=0, rc=-5) This warning does not add any useful information since the result is expected due to missing support for that event type. Suppress this message by checking the associated masks of supported events before issuing a Store Data event. Suggested-by: Heiko Carstens Reviewed-by: Heiko Carstens Signed-off-by: Peter Oberparleiter Signed-off-by: Alexander Gordeev --- drivers/s390/char/sclp_sd.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/s390/char') diff --git a/drivers/s390/char/sclp_sd.c b/drivers/s390/char/sclp_sd.c index f9e164be7568..5aeb7e094a1c 100644 --- a/drivers/s390/char/sclp_sd.c +++ b/drivers/s390/char/sclp_sd.c @@ -194,6 +194,10 @@ static int sclp_sd_sync(unsigned long page, u8 eq, u8 di, u64 sat, u64 sa, struct sclp_sd_evbuf *evbuf; int rc; + if (!sclp_sd_register.sclp_send_mask || + !sclp_sd_register.sclp_receive_mask) + return -EIO; + sclp_sd_listener_init(&listener, __pa(sccb)); sclp_sd_listener_add(&listener); -- cgit v1.2.3