diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-06-17 19:45:23 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-01-16 07:27:52 +0100 |
| commit | e2e0de9b579d4772c2b86e6c9517723ad1e2b22a (patch) | |
| tree | c33b0c30c4adcc7f4548ab9ecf68a61684b9cbd9 /drivers/s390/cio/css.c | |
| parent | s390/cio: clarify cssid usage (diff) | |
| download | linux-e2e0de9b579d4772c2b86e6c9517723ad1e2b22a.tar.xz linux-e2e0de9b579d4772c2b86e6c9517723ad1e2b22a.zip | |
s390/cio: use cssid for pgid generation
Obtain the real channel subsystem id and use that for the generation
of a unique path group id. Note that this change does not affect the
channel subsystem id as used in the user-visible naming of subchannels
and friends.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshik@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/css.c')
| -rw-r--r-- | drivers/s390/cio/css.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 065c4e1d4cf4..13fea905c61a 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -703,7 +703,8 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high) if (css_general_characteristics.mcss) { css->global_pgid.pgid_high.ext_cssid.version = 0x80; - css->global_pgid.pgid_high.ext_cssid.cssid = css->cssid; + css->global_pgid.pgid_high.ext_cssid.cssid = + (css->cssid < 0) ? 0 : css->cssid; } else { css->global_pgid.pgid_high.cpu_addr = stap(); } @@ -794,7 +795,8 @@ static int __init setup_css(int nr) } mutex_init(&css->mutex); css->valid = 1; - css->cssid = nr; + css->cssid = chsc_get_cssid(nr); + dev_set_name(&css->device, "css%x", nr); css->device.release = channel_subsystem_release; tod_high = (u32) (get_tod_clock() >> 32); |