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| author | Peter Oberparleiter <peter.oberparleiter@de.ibm.com> | 2013-03-11 12:58:18 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-04-17 14:07:26 +0200 |
| commit | cce0eacc225b402824e2fc72936b3796e7659fc6 (patch) | |
| tree | ce22f4ddf3f5fe003b21f8d1a2d27353c0293926 /drivers/s390/cio/chsc.c | |
| parent | s390/monreader: Remove redundant NULL check before kfree (diff) | |
| download | linux-cce0eacc225b402824e2fc72936b3796e7659fc6.tar.xz linux-cce0eacc225b402824e2fc72936b3796e7659fc6.zip | |
s390/cio: collect format 1 channel-path description data
Collect format 1 channel-path description data for each CHPID
and update the information in one place.
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chsc.c')
| -rw-r--r-- | drivers/s390/cio/chsc.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index e16c553f6556..8ea7d9b2c671 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -376,7 +376,7 @@ static void chsc_process_sei_chp_avail(struct chsc_sei_nt0_area *sei_area) continue; } mutex_lock(&chp->lock); - chsc_determine_base_channel_path_desc(chpid, &chp->desc); + chp_update_desc(chp); mutex_unlock(&chp->lock); } } @@ -631,8 +631,8 @@ int chsc_chp_vary(struct chp_id chpid, int on) * Redo PathVerification on the devices the chpid connects to */ if (on) { - /* Try to update the channel path descritor. */ - chsc_determine_base_channel_path_desc(chpid, &chp->desc); + /* Try to update the channel path description. */ + chp_update_desc(chp); for_each_subchannel_staged(s390_subchannel_vary_chpid_on, __s390_vary_chpid_on, &chpid); } else @@ -825,9 +825,10 @@ int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, { struct chsc_response_struct *chsc_resp; struct chsc_scpd *scpd_area; + unsigned long flags; int ret; - spin_lock_irq(&chsc_page_lock); + spin_lock_irqsave(&chsc_page_lock, flags); scpd_area = chsc_page; ret = chsc_determine_channel_path_desc(chpid, 0, 0, 1, 0, scpd_area); if (ret) @@ -835,7 +836,7 @@ int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, chsc_resp = (void *)&scpd_area->response; memcpy(desc, &chsc_resp->data, sizeof(*desc)); out: - spin_unlock_irq(&chsc_page_lock); + spin_unlock_irqrestore(&chsc_page_lock, flags); return ret; } |