diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/char/sclp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index f2e42c1d51aa..98e334724a62 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -77,6 +77,13 @@ unsigned long sclp_console_full; /* The currently active SCLP command word. */ static sclp_cmdw_t active_cmd; +static inline struct sccb_header *sclpint_to_sccb(u32 sccb_int) +{ + if (sccb_int) + return __va(sccb_int); + return NULL; +} + static inline void sclp_trace(int prio, char *id, u32 a, u64 b, bool err) { struct sclp_trace_entry e; @@ -620,7 +627,7 @@ __sclp_find_req(u32 sccb) static bool ok_response(u32 sccb_int, sclp_cmdw_t cmd) { - struct sccb_header *sccb = (struct sccb_header *)__va(sccb_int); + struct sccb_header *sccb = sclpint_to_sccb(sccb_int); struct evbuf_header *evbuf; u16 response; @@ -659,7 +666,7 @@ static void sclp_interrupt_handler(struct ext_code ext_code, /* INT: Interrupt received (a=intparm, b=cmd) */ sclp_trace_sccb(0, "INT", param32, active_cmd, active_cmd, - (struct sccb_header *)__va(finished_sccb), + sclpint_to_sccb(finished_sccb), !ok_response(finished_sccb, active_cmd)); if (finished_sccb) { |