Commit 889ee955 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky

[S390] add hook to reenable mss after hibernation

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

Cc: <stable@kernel.org>
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 818c272b
...@@ -256,6 +256,9 @@ restore_registers: ...@@ -256,6 +256,9 @@ restore_registers:
lghi %r2,0 lghi %r2,0
brasl %r14,arch_set_page_states brasl %r14,arch_set_page_states
/* Reinitialize the channel subsystem */
brasl %r14,channel_subsystem_reinit
/* Return 0 */ /* Return 0 */
lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
lghi %r2,0 lghi %r2,0
......
...@@ -1043,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void) ...@@ -1043,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void)
} }
subsys_initcall_sync(channel_subsystem_init_sync); subsys_initcall_sync(channel_subsystem_init_sync);
void channel_subsystem_reinit(void)
{
chsc_enable_facility(CHSC_SDA_OC_MSS);
}
#ifdef CONFIG_PROC_FS #ifdef CONFIG_PROC_FS
static ssize_t cio_settle_write(struct file *file, const char __user *buf, static ssize_t cio_settle_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos) size_t count, loff_t *ppos)
......
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