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[S390] add hook to reenable mss after hibernation

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Reenable multiple subchannel sets after hibernation,
prior to the device callbacks.

Cc: <stable@kernel.org>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2010-04-22 17:17:04 +02:00 committed by Martin Schwidefsky
parent 818c272bd7
commit 889ee9556c
2 changed files with 8 additions and 0 deletions
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3
arch/s390/kernel/swsusp_asm64.S
View file

@ -256,6 +256,9 @@ restore_registers:
lghi %r2,0
brasl %r14,arch_set_page_states
/* Reinitialize the channel subsystem */
brasl %r14,channel_subsystem_reinit
/* Return 0 */
lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
lghi %r2,0

5
drivers/s390/cio/css.c
View file

@ -1043,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void)
}
subsys_initcall_sync(channel_subsystem_init_sync);
void channel_subsystem_reinit(void)
{
chsc_enable_facility(CHSC_SDA_OC_MSS);
}
#ifdef CONFIG_PROC_FS
static ssize_t cio_settle_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)