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[S390] cio: update descriptor in chsc_chp_vary

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Update the channel path descriptor at the beginning of to the
vary_on operation.

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 16:10:31 +02:00
committed by Martin Schwidefsky
parent 906c9768c7
commit c38a90a34c
3 changed files with 11 additions and 9 deletions
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6
drivers/s390/cio/chp.c
View File

@@ -54,12 +54,6 @@ static struct work_struct cfg_work;
/* Wait queue for configure completion events. */ /* Wait queue for configure completion events. */
static wait_queue_head_t cfg_wait_queue; static wait_queue_head_t cfg_wait_queue;
/* Return channel_path struct for given chpid. */
static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
{
return channel_subsystems[chpid.cssid]->chps[chpid.id];
}
/* Set vary state for given chpid. */ /* Set vary state for given chpid. */
static void set_chp_logically_online(struct chp_id chpid, int onoff) static void set_chp_logically_online(struct chp_id chpid, int onoff)
{ {

6
drivers/s390/cio/chp.h
View File

@@ -52,6 +52,12 @@ struct channel_path {
void *cmg_chars; void *cmg_chars;
}; };
/* Return channel_path struct for given chpid. */
static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
{
return channel_subsystems[chpid.cssid]->chps[chpid.id];
}
int chp_get_status(struct chp_id chpid); int chp_get_status(struct chp_id chpid);
u8 chp_get_sch_opm(struct subchannel *sch); u8 chp_get_sch_opm(struct subchannel *sch);
int chp_is_registered(struct chp_id chpid); int chp_is_registered(struct chp_id chpid);

8
drivers/s390/cio/chsc.c
View File

@@ -495,6 +495,7 @@ __s390_vary_chpid_on(struct subchannel_id schid, void *data)
*/ */
int chsc_chp_vary(struct chp_id chpid, int on) int chsc_chp_vary(struct chp_id chpid, int on)
{ {
struct channel_path *chp = chpid_to_chp(chpid);
struct chp_link link; struct chp_link link;
memset(&link, 0, sizeof(struct chp_link)); memset(&link, 0, sizeof(struct chp_link));
@@ -504,11 +505,12 @@ int chsc_chp_vary(struct chp_id chpid, int on)
/* /*
* Redo PathVerification on the devices the chpid connects to * Redo PathVerification on the devices the chpid connects to
*/ */
if (on) {
if (on) /* Try to update the channel path descritor. */
chsc_determine_base_channel_path_desc(chpid, &chp->desc);
for_each_subchannel_staged(s390_subchannel_vary_chpid_on, for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
__s390_vary_chpid_on, &link); __s390_vary_chpid_on, &link);
else } else
for_each_subchannel_staged(s390_subchannel_vary_chpid_off, for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
NULL, &link); NULL, &link);