diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-06-20 14:03:25 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-06-28 09:32:32 +0200 |
| commit | 7b411ac6b755b211423dfd37c59a7dad5a5e0bf1 (patch) | |
| tree | 3ee3c61f8dc7a5025238aec62925c5d1a5440a94 /arch | |
| parent | s390/iucv: use basic blocks for iucv inline assemblies (diff) | |
| download | linux-7b411ac6b755b211423dfd37c59a7dad5a5e0bf1.tar.xz linux-7b411ac6b755b211423dfd37c59a7dad5a5e0bf1.zip | |
s390/pci: use basic blocks for pci inline assemblies
Use only simple inline assemblies which consist of a single basic
block if the register asm construct is being used.
Otherwise gcc would generate broken code if the compiler option
--sanitize-coverage=trace-pc would be used.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/pci/pci_insn.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/pci/pci_insn.c b/arch/s390/pci/pci_insn.c index 10ca15dcab11..fa8d7d4b9751 100644 --- a/arch/s390/pci/pci_insn.c +++ b/arch/s390/pci/pci_insn.c @@ -99,7 +99,7 @@ void zpci_set_irq_ctrl(u16 ctl, char *unused, u8 isc) } /* PCI Load */ -static inline int __pcilg(u64 *data, u64 req, u64 offset, u8 *status) +static inline int ____pcilg(u64 *data, u64 req, u64 offset, u8 *status) { register u64 __req asm("2") = req; register u64 __offset asm("3") = offset; @@ -116,6 +116,16 @@ static inline int __pcilg(u64 *data, u64 req, u64 offset, u8 *status) : "d" (__offset) : "cc"); *status = __req >> 24 & 0xff; + *data = __data; + return cc; +} + +static inline int __pcilg(u64 *data, u64 req, u64 offset, u8 *status) +{ + u64 __data; + int cc; + + cc = ____pcilg(&__data, req, offset, status); if (!cc) *data = __data; |