[PATCH] uml: SIGIO cleanups

[linux-2.6-omap-h63xx.git] / arch / s390 / kernel / process.c

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 1f9399191794dbe97bccf7f849c0ff97bf2b4f78..d3cbfa3005eca0017fb63ca6ddfe88d979659bcc 100644 (file)
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -142,6 +142,7 @@ static void default_idle(void)
                return;
        }
 
+       trace_hardirqs_on();
        /* Wait for external, I/O or machine check interrupt. */
        __load_psw_mask(PSW_KERNEL_BITS | PSW_MASK_WAIT |
                        PSW_MASK_IO | PSW_MASK_EXT);
@@ -171,7 +172,7 @@ void show_regs(struct pt_regs *regs)
        show_registers(regs);
        /* Show stack backtrace if pt_regs is from kernel mode */
        if (!(regs->psw.mask & PSW_MASK_PSTATE))
-               show_trace(0,(unsigned long *) regs->gprs[15]);
+               show_trace(NULL, (unsigned long *) regs->gprs[15]);
 }
 
 extern void kernel_thread_starter(void);