From 83119ad4a1ceacd99f380086c2855ae2c4268afc Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Tue, 10 Jul 2007 11:24:10 +0200 Subject: [S390] sclp: Test facility list before executing a service call. Check if a command is available before executing. Saves some superfluous service calls that won't succeed anyway. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- drivers/s390/char/sclp.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/s390/char/sclp.h') diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h index cb5888f79007..c7318a125852 100644 --- a/drivers/s390/char/sclp.h +++ b/drivers/s390/char/sclp.h @@ -79,6 +79,11 @@ struct sccb_header { u16 response_code; } __attribute__((packed)); +extern u64 sclp_facilities; + +#define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) +#define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) + struct gds_subvector { u8 length; u8 key; -- cgit v1.2.3