From a39d7ebfd504110ab3e84fa3990bd79f7ba2271f Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sun, 12 Oct 2025 12:44:58 -0400
Subject: kern: xhci: Add NULL check to xhci_init_dcbaap()

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/io/usb/hcd/xhci.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/sys/io/usb/hcd/xhci.c')

diff --git a/src/sys/io/usb/hcd/xhci.c b/src/sys/io/usb/hcd/xhci.c
index 0300367..e5a794a 100644
--- a/src/sys/io/usb/hcd/xhci.c
+++ b/src/sys/io/usb/hcd/xhci.c
@@ -150,6 +150,10 @@ xhci_init_dcbaap(struct xhci_hcd *hcd)
     uint32_t npages;
     void *va;
 
+    if (hcd == NULL) {
+        return -EINVAL;
+    }
+
     npages = BYTES_TO_PAGES(hcd->max_slots * XHCI_CTX_SIZE);
     hcd->dcbaap_pa = vm_alloc_frame(npages);
     if (hcd->dcbaap_pa == 0) {
-- 
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