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[PATCH] hw/arm/aspeed: Do not create and attach empty SD cards by defaul

From: Philippe Mathieu-Daudé
Subject: [PATCH] hw/arm/aspeed: Do not create and attach empty SD cards by default
Date: Sun, 5 Jul 2020 19:34:02 +0200

Since added in commit 2bea128c3d, each SDHCI is wired with a SD
card, using empty card when no block drive provided. This is not
the desired behavior. The SDHCI exposes a SD bus to plug cards
on, if no card available, it is fine to have an unplugged bus.

Avoid creating unnecessary SD card device when no block drive

Fixes: 2bea128c3d ("hw/sd/aspeed_sdhci: New device")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Eddie James <eajames@linux.ibm.com>
Cc: Cédric Le Goater <clg@kaod.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
 hw/arm/aspeed.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 379f9672a5..11521c4be1 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -246,11 +246,12 @@ static void sdhci_attach_drive(SDHCIState *sdhci, 
DriveInfo *dinfo)
         DeviceState *card;
-        card = qdev_new(TYPE_SD_CARD);
-        if (dinfo) {
-            qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
-                                    &error_fatal);
+        if (!dinfo) {
+            return;
+        card = qdev_new(TYPE_SD_CARD);
+        qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
+                                &error_fatal);
                                qdev_get_child_bus(DEVICE(sdhci), "sd-bus"),

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