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path: root/drivers/s390/cio/css.c
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-rw-r--r--drivers/s390/cio/css.c6
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);