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[Qemu-devel] [PATCH 1/4] hw/sd/pl181: Reset SD card on controller reset

From: Peter Maydell
Subject: [Qemu-devel] [PATCH 1/4] hw/sd/pl181: Reset SD card on controller reset
Date: Tue, 9 Jan 2018 14:01:50 +0000

Since pl181 is still using the legacy SD card API, the SD
card created by sd_init() is not plugged into any bus. This
means that the controller has to reset it manually.

Failing to do this mostly didn't affect the guest since the
guest typically does a programmed SD card reset as part of
its SD controller driver initialization, but meant that
migration failed because it's only in sd_reset() that we
set up the wpgrps_size field.

Cc: address@hidden
Fixes: https://bugs.launchpad.net/qemu/+bug/1739378
Signed-off-by: Peter Maydell <address@hidden>
 hw/sd/pl181.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c
index 55c8098..3ba1f7d 100644
--- a/hw/sd/pl181.c
+++ b/hw/sd/pl181.c
@@ -480,6 +480,10 @@ static void pl181_reset(DeviceState *d)
     /* We can assume our GPIO outputs have been wired up now */
     sd_set_cb(s->card, s->cardstatus[0], s->cardstatus[1]);
+    /* Since we're still using the legacy SD API the card is not plugged
+     * into any bus, and we must reset it manually.
+     */
+    device_reset(DEVICE(s->card));
 static void pl181_init(Object *obj)

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