[xen stable-4.16] ehci-dbgp: fix selecting n-th ehci controller

[patchbot@xxxxxxx]

commit 5cb8142076ce1ce53eafd7e00acb4d0eac4e7784
Author:     Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
AuthorDate: Tue Jul 12 11:11:35 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jul 12 11:11:35 2022 +0200

    ehci-dbgp: fix selecting n-th ehci controller
    
    The ehci<n> number was parsed but ignored.
    
    Fixes: 322ecbe4ac85 ("console: add EHCI debug port based serial console")
    Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: d6d0cb659fda64430d4649f8680c5cead32da8fd
    master date: 2022-06-16 14:23:37 +0100
---
 xen/drivers/char/ehci-dbgp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/char/ehci-dbgp.c b/xen/drivers/char/ehci-dbgp.c
index c893d246de..66b4811af2 100644
--- a/xen/drivers/char/ehci-dbgp.c
+++ b/xen/drivers/char/ehci-dbgp.c
@@ -1478,7 +1478,7 @@ void __init ehci_dbgp_init(void)
         unsigned int num = 0;
 
         if ( opt_dbgp[4] )
-            simple_strtoul(opt_dbgp + 4, &e, 10);
+            num = simple_strtoul(opt_dbgp + 4, &e, 10);
 
         dbgp->cap = find_dbgp(dbgp, num);
         if ( !dbgp->cap )
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.16