diff options
Diffstat (limited to 'drivers/s390/cio/ioasm.c')
| -rw-r--r-- | drivers/s390/cio/ioasm.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/s390/cio/ioasm.c b/drivers/s390/cio/ioasm.c index 08eb10283b18..4c5244d6052b 100644 --- a/drivers/s390/cio/ioasm.c +++ b/drivers/s390/cio/ioasm.c @@ -12,6 +12,7 @@ #include "ioasm.h" #include "orb.h" #include "cio.h" +#include "cio_inject.h" static inline int __stsch(struct subchannel_id schid, struct schib *addr) { @@ -260,7 +261,7 @@ int xsch(struct subchannel_id schid) return ccode; } -int stcrw(struct crw *crw) +static inline int __stcrw(struct crw *crw) { int ccode; @@ -271,6 +272,26 @@ int stcrw(struct crw *crw) : "=d" (ccode), "=m" (*crw) : "a" (crw) : "cc"); + return ccode; +} + +static inline int _stcrw(struct crw *crw) +{ +#ifdef CONFIG_CIO_INJECT + if (static_branch_unlikely(&cio_inject_enabled)) { + if (stcrw_get_injected(crw) == 0) + return 0; + } +#endif + + return __stcrw(crw); +} + +int stcrw(struct crw *crw) +{ + int ccode; + + ccode = _stcrw(crw); trace_s390_cio_stcrw(crw, ccode); return ccode; |