From bf4ec24ff8ab54d56c835eb61212a1e87270d7c8 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 31 Jan 2013 19:53:12 +0100 Subject: [PATCH] s390/pci: cleanup clp inline assembly Tell gcc that the memory region pointed to by req will be used (and changed). Also remove the (now) superfluous memory constraint. Acked-by: Gerald Schaefer Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- arch/s390/pci/pci_clp.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 2c847143..702bd26 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -19,18 +19,19 @@ * Call Logical Processor * Retry logic is handled by the caller. */ -static inline u8 clp_instr(void *req) +static inline u8 clp_instr(void *data) { - u64 ilpm; + struct { u8 _[CLP_BLK_SIZE]; } *req = data; + u64 ignored; u8 cc; asm volatile ( - " .insn rrf,0xb9a00000,%[ilpm],%[req],0x0,0x2\n" + " .insn rrf,0xb9a00000,%[ign],%[req],0x0,0x2\n" " ipm %[cc]\n" " srl %[cc],28\n" - : [cc] "=d" (cc), [ilpm] "=d" (ilpm) + : [cc] "=d" (cc), [ign] "=d" (ignored), "+m" (*req) : [req] "a" (req) - : "cc", "memory"); + : "cc"); return cc; } -- 2.7.4