hw/sd/milkymist-memcard: Reset SD card on controller reset

Since milkymist-memcard 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
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: 1515506513-31961-3-git-send-email-peter.maydell@linaro.org

diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c
index 4008c8100277f30c99f77267fef0a94f2369990e..341da88552ca5764093723bc24b0d76ebc54a29a 100644 (file)
--- a/hw/sd/milkymist-memcard.c
+++ b/hw/sd/milkymist-memcard.c
@@ -248,6 +248,10 @@ static void milkymist_memcard_reset(DeviceState *d)
     for (i = 0; i < R_MAX; i++) {
         s->regs[i] = 0;
     }
+    /* 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 int milkymist_memcard_init(SysBusDevice *dev)