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[PATCH 1/2] xen/arm: domain_build: Check return code of domain_vpl011_init


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Michal Orzel <michal.orzel@xxxxxxx>
  • Date: Wed, 22 Mar 2023 11:29:40 +0100
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  • Cc: Michal Orzel <michal.orzel@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
  • Delivery-date: Wed, 22 Mar 2023 10:30:00 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

We are assigning return code of domain_vpl011_init() to a variable
without checking it for an error. Fix it.

Fixes: 3580c8b2dfc3 ("xen/arm: if direct-map domain use native UART address and 
IRQ number for vPL011")
Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
---
 xen/arch/arm/domain_build.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 9707eb7b1bb1..3195c5b6d6ac 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -3826,7 +3826,11 @@ static int __init construct_domU(struct domain *d,
      * shall be done first.
      */
     if ( kinfo.vpl011 )
+    {
         rc = domain_vpl011_init(d, NULL);
+        if ( rc < 0 )
+            return rc;
+    }
 
     rc = prepare_dtb_domU(d, &kinfo);
     if ( rc < 0 )
-- 
2.25.1




 


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