[src/trunk]: src/sys/arch/arm/sunxi Only set signal voltage if the regulator ...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a97273e8172c
branches:  trunk
changeset: 447169:a97273e8172c
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Wed Jan 02 18:39:01 2019 +0000

description:
Only set signal voltage if the regulator can handle it

diffstat:

 sys/arch/arm/sunxi/sunxi_mmc.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r 4310254c2b7b -r a97273e8172c sys/arch/arm/sunxi/sunxi_mmc.c
--- a/sys/arch/arm/sunxi/sunxi_mmc.c    Wed Jan 02 18:38:43 2019 +0000
+++ b/sys/arch/arm/sunxi/sunxi_mmc.c    Wed Jan 02 18:39:01 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sunxi_mmc.c,v 1.29 2019/01/02 17:28:18 jmcneill Exp $ */
+/* $NetBSD: sunxi_mmc.c,v 1.30 2019/01/02 18:39:01 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2014-2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
 #include "opt_sunximmc.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sunxi_mmc.c,v 1.29 2019/01/02 17:28:18 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sunxi_mmc.c,v 1.30 2019/01/02 18:39:01 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -911,6 +911,10 @@
                return EINVAL;
        }
 
+       error = fdtbus_regulator_supports_voltage(sc->sc_reg_vqmmc, uvol, uvol);
+       if (error != 0)
+               return 0;
+
        error = fdtbus_regulator_set_voltage(sc->sc_reg_vqmmc, uvol, uvol);
        if (error != 0)
                return error;