[PULL 02/37] s390x/css: Fix css stsch detection to go beyond 8192 devices

[Eric Farman <farman@linux.ibm.com>]

From: Christian Borntraeger <borntraeger@linux.ibm.com>

find_last_bit expects a size in bits and not in words. the calculation
limits the number of guest devices to 8192.  This probably does not
matter in reality, its wrong anyway.

Fixes: df1fe5bb49241 ("s390: Virtual channel subsystem support")
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20260814152226.1834819-1-borntraeger@de.ibm.com
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 hw/s390x/css.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 3a67b67053..76dbca3bb9 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -2023,8 +2023,7 @@ bool css_schid_final(int m, uint8_t cssid, uint8_t ssid, uint16_t schid)
         return true;
     }
     set = channel_subsys.css[real_cssid]->sch_set[ssid];
-    return schid > find_last_bit(set->schids_used,
-                                 (MAX_SCHID + 1) / sizeof(unsigned long));
+    return schid > find_last_bit(set->schids_used, (MAX_SCHID + 1));
 }
 
 unsigned int css_find_free_chpid(uint8_t cssid)
-- 
2.55.0