diff options
Diffstat (limited to 'drivers/s390/s390mach.c')
| -rw-r--r-- | drivers/s390/s390mach.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c index 432136f96e6..5399c5d99b8 100644 --- a/drivers/s390/s390mach.c +++ b/drivers/s390/s390mach.c @@ -111,6 +111,16 @@ repeat: break; case CRW_RSC_CPATH: pr_debug("source is channel path %02X\n", crw[0].rsid); + /* + * Check for solicited machine checks. These are + * created by reset channel path and need not be + * reported to the common I/O layer. + */ + if (crw[chain].slct) { + DBG(KERN_INFO"solicited machine check for " + "channel path %02X\n", crw[0].rsid); + break; + } switch (crw[0].erc) { case CRW_ERC_IPARM: /* Path has come. */ ret = chp_process_crw(crw[0].rsid, 1); @@ -378,6 +388,8 @@ s390_do_machine_check(struct pt_regs *regs) struct mcck_struct *mcck; int umode; + lockdep_off(); + mci = (struct mci *) &S390_lowcore.mcck_interruption_code; mcck = &__get_cpu_var(cpu_mcck); umode = user_mode(regs); @@ -482,6 +494,7 @@ s390_do_machine_check(struct pt_regs *regs) mcck->warning = 1; set_thread_flag(TIF_MCCK_PENDING); } + lockdep_on(); } /* |