git: 296156264072 - stable/15 - nvme: Tweak completion timeout loop

The branch stable/15 has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=29615626407279b9c995ffe9aa0f577de4752634

commit 29615626407279b9c995ffe9aa0f577de4752634
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2025-10-08 10:07:13 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2025-10-09 12:16:05 +0000

    nvme: Tweak completion timeout loop
    
    * Rename delta_t to avoid misleading simplistic syntax highlighters
    * Simplify the increment calculation
    
    Sponsored by:   Klara, Inc.
    Sponsored by:   NetApp, Inc.
    Reviewed by:    imp
    Differential Revision:  https://reviews.freebsd.org/D52973
    
    (cherry picked from commit 4070ae0e9a60715199f83004e7ebdfb169fc8cfc)
---
 sys/dev/nvme/nvme_private.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/dev/nvme/nvme_private.h b/sys/dev/nvme/nvme_private.h
index 52f9e12f8f9a..52e9fcbbebcd 100644
--- a/sys/dev/nvme/nvme_private.h
+++ b/sys/dev/nvme/nvme_private.h
@@ -463,13 +463,13 @@ static __inline void
 nvme_completion_poll(struct nvme_completion_poll_status *status)
 {
 	int timeout = ticks + 10 * hz;
-	sbintime_t delta_t = SBT_1US;
+	sbintime_t delta = SBT_1US;
 
 	while (!atomic_load_acq_int(&status->done)) {
 		if (timeout - ticks < 0)
 			panic("NVME polled command failed to complete within 10s.");
-		pause_sbt("nvme", delta_t, 0, C_PREL(1));
-		delta_t = min(SBT_1MS, delta_t * 3 / 2);
+		pause_sbt("nvme", delta, 0, C_PREL(1));
+		delta = min(SBT_1MS, delta + delta / 2);
 	}
 }