[15/54] hw/sd/pl181: Reset SD card on controller reset

Message ID 20180206191515.25830-16-mdroth@linux.vnet.ibm.com
State New
Headers show
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Commit Message

Michael Roth Feb. 6, 2018, 7:14 p.m.
From: Peter Maydell <peter.maydell@linaro.org>

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: qemu-stable@nongnu.org
Fixes: https://bugs.launchpad.net/qemu/+bug/1739378
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Message-id: 1515506513-31961-2-git-send-email-peter.maydell@linaro.org
(cherry picked from commit 0cb57cc701839e7358918d5f2922ccbc04d28d17)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

 hw/sd/pl181.c | 4 ++++
 1 file changed, 4 insertions(+)



diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c
index 55c8098ecd..3ba1f7dd23 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)