git: 850203655b7d - main - thunderbolt: Fix v2.0 reset to reliably wait for the reset to finish

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=850203655b7d25d7309601a32b44011a21e850c6

commit 850203655b7d25d7309601a32b44011a21e850c6
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2026-08-20 19:49:36 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2026-08-20 19:49:36 +0000

    thunderbolt: Fix v2.0 reset to reliably wait for the reset to finish
    
    The `reg` value was never initialized, so the loop could potentially
    abort without a single read of the register.  This was found by the
    following warning from GCC:
    
    sys/dev/thunderbolt/nhi.c: In function 'nhi_reset_v2':
    sys/dev/thunderbolt/nhi.c:272:35: error: 'reg' is used uninitialized [-Werror=uninitialized]
      272 |         for (size_t i = 0; i < 10 && reg; i++) {
          |                                   ^~
    sys/dev/thunderbolt/nhi.c:257:18: note: 'reg' was declared here
      257 |         uint32_t reg;
          |                  ^~~
    
    Reported by:    GCC 15
    Fixes:          efdb82413963 ("thunderbolt: Reset controllers")
---
 sys/dev/thunderbolt/nhi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/dev/thunderbolt/nhi.c b/sys/dev/thunderbolt/nhi.c
index 22427cf324fb..e8221136a8e5 100644
--- a/sys/dev/thunderbolt/nhi.c
+++ b/sys/dev/thunderbolt/nhi.c
@@ -269,6 +269,7 @@ nhi_reset_v2(struct nhi_softc *sc)
 	 * "The Host Router is required to complete its reset within 500ms
 	 * after the Host Router Reset bit is set to 1b."
 	 */
+	reg = 1;
 	for (size_t i = 0; i < 10 && reg; i++) {
 		/*
 		 * Wait at least 50 ms after writing before reading this