diff options
Diffstat (limited to 'arch/powerpc/kernel/time.c')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index bc0503ef9c9c..694522308cd5 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Common time routines among all ppc machines. * @@ -24,11 +25,6 @@ * * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 * "A Kernel Model for Precision Timekeeping" by Dave Mills - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/errno.h> @@ -43,7 +39,6 @@ #include <linux/timex.h> #include <linux/kernel_stat.h> #include <linux/time.h> -#include <linux/clockchips.h> #include <linux/init.h> #include <linux/profile.h> #include <linux/cpu.h> @@ -151,6 +146,8 @@ EXPORT_SYMBOL_GPL(ppc_proc_freq); unsigned long ppc_tb_freq; EXPORT_SYMBOL_GPL(ppc_tb_freq); +bool tb_invalid; + #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE /* * Factor for converting from cputime_t (timebase ticks) to @@ -460,6 +457,13 @@ void __delay(unsigned long loops) diff += 1000000000; spin_cpu_relax(); } while (diff < loops); + } else if (tb_invalid) { + /* + * TB is in error state and isn't ticking anymore. + * HMI handler was unable to recover from TB error. + * Return immediately, so that kernel won't get stuck here. + */ + spin_cpu_relax(); } else { start = get_tbl(); while (get_tbl() - start < loops) |