From 77e844b9644026c11c5883144540155de39af767 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 29 Aug 2013 19:36:49 +0200 Subject: [PATCH] s390/hibernate: add early resume function Some functions that do arch specific resume actions are called directly from swsusp_asm64.S . Before we add another function call provide a generic s390_early_resume function which can be used for this purpose. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/cio.h | 1 + arch/s390/kernel/suspend.c | 9 +++++++++ arch/s390/kernel/swsusp_asm64.S | 7 ++----- drivers/s390/cio/css.h | 2 -- 4 files changed, 12 insertions(+), 7 deletions(-) diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h index ffb898961c8d..d42625053c37 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -296,6 +296,7 @@ static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, return 0; } +void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); extern void reipl_ccw_dev(struct ccw_dev_id *id); diff --git a/arch/s390/kernel/suspend.c b/arch/s390/kernel/suspend.c index c479d2f9605b..eebab9f83f1d 100644 --- a/arch/s390/kernel/suspend.c +++ b/arch/s390/kernel/suspend.c @@ -10,6 +10,8 @@ #include #include #include +#include +#include /* * References to section boundaries @@ -211,3 +213,10 @@ void restore_processor_state(void) __ctl_set_bit(0,28); local_mcck_enable(); } + +/* Called at the end of swsusp_arch_resume */ +void s390_early_resume(void) +{ + lgr_info_log(); + channel_subsystem_reinit(); +} diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S index c487be4cfc81..6b09fdffbd2f 100644 --- a/arch/s390/kernel/swsusp_asm64.S +++ b/arch/s390/kernel/swsusp_asm64.S @@ -281,11 +281,8 @@ restore_registers: lghi %r2,0 brasl %r14,arch_set_page_states - /* Log potential guest relocation */ - brasl %r14,lgr_info_log - - /* Reinitialize the channel subsystem */ - brasl %r14,channel_subsystem_reinit + /* Call arch specific early resume code */ + brasl %r14,s390_early_resume /* Return 0 */ lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index b1de60335238..29351321bad6 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -130,8 +130,6 @@ struct channel_subsystem { extern struct channel_subsystem *channel_subsystems[]; -void channel_subsystem_reinit(void); - /* Helper functions to build lists for the slow path. */ void css_schedule_eval(struct subchannel_id schid); void css_schedule_eval_all(void); -- 2.39.5