If acpi_map_os_memory has failed, return early with AE_ERROR.
Coverity-ID: 1401601
Coverity-ID: 1401602
Signed-off-by: Wei Liu <wei.l...@citrix.com>
---
Cc: Jan Beulich <jbeul...@suse.com>
---
xen/drivers/acpi/osl.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/xen/drivers/acpi/osl.c b/xen/drivers/acpi/osl.c
index 94dbf0406f..9881db19da 100644
--- a/xen/drivers/acpi/osl.c
+++ b/xen/drivers/acpi/osl.c
@@ -155,6 +155,9 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 *
value, u32 width)
u32 dummy;
void __iomem *virt_addr = acpi_os_map_memory(phys_addr, width >> 3);
+ if (!virt_addr)
+ return AE_ERROR;
+
if (!value)
value = &dummy;
@@ -182,6 +185,9 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u32
value, u32 width)
{
void __iomem *virt_addr = acpi_os_map_memory(phys_addr, width >> 3);
+ if (!virt_addr)
+ return AE_ERROR;
+
switch (width) {
case 8:
writeb(value, virt_addr);
--
2.11.0
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
