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[S390] css: update descriptor after hibernate

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Update the channel path descriptors after hibernation.
This is done unlocked, since we are the only active
task at this time.

Note: chsc_determine_base_channel_path_desc is changed
to use spin_lock_irqsave, since it's called with
interrupts disabled in this case.

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
2010-10-25 16:10:32 +02:00
committed by Martin Schwidefsky
parent c38a90a34c
commit 62da177ac2
2 changed files with 12 additions and 2 deletions
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9
drivers/s390/cio/css.c
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@@ -1030,7 +1030,16 @@ subsys_initcall_sync(channel_subsystem_init_sync);
void channel_subsystem_reinit(void)
{
struct channel_path *chp;
struct chp_id chpid;
chsc_enable_facility(CHSC_SDA_OC_MSS);
chp_id_for_each(&chpid) {
chp = chpid_to_chp(chpid);
if (!chp)
continue;
chsc_determine_base_channel_path_desc(chpid, &chp->desc);
}
}
#ifdef CONFIG_PROC_FS