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-rw-r--r--payloads/libpayload/drivers/usb/xhci_private.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/usb/xhci_private.h b/payloads/libpayload/drivers/usb/xhci_private.h
index 8e11937ac5..b4c8825dc6 100644
--- a/payloads/libpayload/drivers/usb/xhci_private.h
+++ b/payloads/libpayload/drivers/usb/xhci_private.h
@@ -363,7 +363,7 @@ typedef struct erst_entry {
#define CAP_CSZ_LEN 1
#define CAP_MASK(tok) MASK(CAP_##tok##_START, CAP_##tok##_LEN)
-#define CAP_GET(tok, cap) (((cap)->CAP_##tok##_FIELD & CAP_MASK(tok)) \
+#define CAP_GET(tok, cap) ((read32(&(cap)->CAP_##tok##_FIELD) & CAP_MASK(tok)) \
>> CAP_##tok##_START)
#define CTXSIZE(xhci) (CAP_GET(CSZ, (xhci)->capreg) ? 64 : 32)