diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-01-31 19:53:12 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-02-14 15:55:16 +0100 |
| commit | bf4ec24ff8ab54d56c835eb61212a1e87270d7c8 (patch) | |
| tree | 55bdbf0d137cbfe09bb9b566980a25cd963a57e6 /arch/s390 | |
| parent | s390/perf: cpum_cf: fallback to software sampling events (diff) | |
| download | linux-bf4ec24ff8ab54d56c835eb61212a1e87270d7c8.tar.xz linux-bf4ec24ff8ab54d56c835eb61212a1e87270d7c8.zip | |
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 <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/pci/pci_clp.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 2c847143cbd1..702bd2693689 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; } |