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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-08-29 19:36:49 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-30 08:57:15 +0200 |
| commit | 77e844b9644026c11c5883144540155de39af767 (patch) | |
| tree | 704f30cb7e9a30ade37e20c0f0bc9688f05ac0b0 /arch/s390 | |
| parent | 0ff70ec88ba61f72b05b365a21fbd8aa60436254 (diff) | |
| download | linux-77e844b9644026c11c5883144540155de39af767.tar.bz2 | |
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 <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/cio.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/suspend.c | 9 | ||||
| -rw-r--r-- | arch/s390/kernel/swsusp_asm64.S | 7 |
3 files changed, 12 insertions, 5 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 <linux/suspend.h> #include <linux/mm.h> #include <asm/ctl_reg.h> +#include <asm/ipl.h> +#include <asm/cio.h> /* * 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) |