diff options
Diffstat (limited to 'arch/s390/kernel/head.S')
| -rw-r--r-- | arch/s390/kernel/head.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index d12cff11b4b..2710e66fefb 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -346,6 +346,13 @@ iplstart: la %r2,.Lreset lhi %r3,26 diag %r2,%r3,8 + la %r5,.Lirb + stsch 0(%r5) # check if irq is pending + tm 30(%r5),0x0f # by verifying if any of the + bnz .Lwaitforirq # activity or status control + tm 31(%r5),0xff # bits is set in the schib + bz .Lnoreset +.Lwaitforirq: mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw .Lwaitrdrirq: lpsw .Lrdrwaitpsw |