From 6e081f10fcb3eeb3b6b3108472978ecbbbd112f9 Mon Sep 17 00:00:00 2001
From: Ian Lepore <ian@FreeBSD.org>
Date: Fri, 18 Dec 2015 01:32:43 +0000
Subject: [PATCH] Flag sysctl hw.mmc.debug as a tunable, since often you want
 to debug the bus probing during system startup.

---
 sys/dev/mmc/mmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/mmc/mmc.c b/sys/dev/mmc/mmc.c
index eb762562c4b..a65ff41827b 100644
--- a/sys/dev/mmc/mmc.c
+++ b/sys/dev/mmc/mmc.c
@@ -118,7 +118,7 @@ struct mmc_ivars {
 static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
 
 static int mmc_debug;
-SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
+SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RWTUN, &mmc_debug, 0, "Debug level");
 
 /* bus entry points */
 static int mmc_acquire_bus(device_t busdev, device_t dev);