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-rw-r--r--drivers/misc/swap_case.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/swap_case.c b/drivers/misc/swap_case.c
index 7093ad1cd4..ee5c12bd0a 100644
--- a/drivers/misc/swap_case.c
+++ b/drivers/misc/swap_case.c
@@ -165,6 +165,9 @@ static int sandbox_swap_case_read_config(const struct udevice *emul,
case PCI_CAP_ID_EXP_OFFSET + PCI_CAP_LIST_NEXT:
*valuep = PCI_CAP_ID_MSIX_OFFSET;
break;
+ case PCI_CAP_ID_EXP_OFFSET + PCI_EXP_DEVCAP:
+ *valuep = PCI_EXP_DEVCAP_PAYLOAD_256B;
+ break;
case PCI_CAP_ID_MSIX_OFFSET:
if (sandbox_swap_case_use_ea(emul))
*valuep = (PCI_CAP_ID_EA_OFFSET << 8) | PCI_CAP_ID_MSIX;