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From: Markus Armbruster <armbru@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
	berrange@redhat.com, ehabkost@redhat.com,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	qemu-arm@nongnu.org, pbonzini@redhat.com
Subject: [PATCH v3 03/24] sd/pxa2xx_mmci: Fix to realize "pxa2xx-mmci" device
Date: Tue,  9 Jun 2020 14:23:18 +0200	[thread overview]
Message-ID: <20200609122339.937862-4-armbru@redhat.com> (raw)
In-Reply-To: <20200609122339.937862-1-armbru@redhat.com>

pxa2xx_mmci_init() creates a "pxa2xx-mmci" device, but neglects to
realize it.  Affects machines akita, borzoi, connex, mainstone, spitz,
terrier, tosa, verdex, and z2.

In theory, a device becomes real only on realize.  In practice, the
transition from unreal to real is a fuzzy one.  The work to make a
device real can be spread between realize methods (fine),
instance_init methods (wrong), and board code wiring up the device
(fine as long as it effectively happens on realize).  Depending on
what exactly is done where, a device can work even when we neglect
to realize it.

This one appears to work.  Nevertheless, it's a clear misuse of the
interface.  Even when it works today (more or less by chance), it can
break tomorrow.

Fix by realizing it right away.  Visible in "info qom-tree"; here's
the change for akita:

     /machine (akita-machine)
       [...]
       /unattached (container)
         [...]
    +    /device[5] (pxa2xx-mmci)
    +      /pxa2xx-mmci[0] (qemu:memory-region)
    +      /sd-bus (pxa2xx-mmci-bus)
         [rest of device[*] renumbered...]

Fixes: 7a9468c92517e19037bfe2272f64f5dadaf9db15
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/sd/pxa2xx_mmci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/sd/pxa2xx_mmci.c b/hw/sd/pxa2xx_mmci.c
index f9c50ddda5..c32df1b8f9 100644
--- a/hw/sd/pxa2xx_mmci.c
+++ b/hw/sd/pxa2xx_mmci.c
@@ -492,6 +492,7 @@ PXA2xxMMCIState *pxa2xx_mmci_init(MemoryRegion *sysmem,
     sysbus_connect_irq(sbd, 0, irq);
     qdev_connect_gpio_out_named(dev, "rx-dma", 0, rx_dma);
     qdev_connect_gpio_out_named(dev, "tx-dma", 0, tx_dma);
+    qdev_init_nofail(dev);
 
     /* Create and plug in the sd card */
     carddev = qdev_create(qdev_get_child_bus(dev, "sd-bus"), TYPE_SD_CARD);
-- 
2.26.2



  parent reply	other threads:[~2020-06-09 12:26 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-09 12:23 [PATCH v3 00/24] Fixes around device realization Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 01/24] arm/stm32f405: Fix realization of "stm32f2xx-adc" devices Markus Armbruster
2020-06-09 23:14   ` Alistair Francis
2020-06-09 12:23 ` [PATCH v3 02/24] display/xlnx_dp: Fix to realize "i2c-ddc" and "aux-to-i2c-bridge" Markus Armbruster
2020-06-09 12:23 ` Markus Armbruster [this message]
2020-06-09 12:23 ` [PATCH v3 04/24] arm/aspeed: Compute the number of CPUs from the SoC definition Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 05/24] arm/aspeed: Rework NIC attachment Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 06/24] armv7m: Delete unused "ARM,bitband-memory" devices Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 07/24] auxbus: Fix aux-to-i2c-bridge to be a subtype of aux-slave Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 08/24] mac_via: Fix to realize "mos6522-q800-via*" devices Markus Armbruster
2020-06-10 15:46   ` Laurent Vivier
2020-06-09 12:23 ` [PATCH v3 09/24] macio: Fix to realize "mos6522-cuda" and "mos6522-pmu" devices Markus Armbruster
2020-06-15  5:26   ` Markus Armbruster
2020-06-15  6:15     ` Philippe Mathieu-Daudé
2020-06-09 12:23 ` [PATCH v3 10/24] macio: Delete unused "macio-gpio" devices Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 11/24] pnv/phb4: Delete unused "pnv-phb4-pec-stack" devices Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 12/24] MAINTAINERS: Make section PowerNV cover pci-host/pnv* as well Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 13/24] ppc4xx: Drop redundant device realization Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 14/24] macio: Put "macio-nvram" device on the macio bus Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 15/24] macio: Fix macio-bus to be a subtype of System bus Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 16/24] ppc/pnv: Put "*-pnv-chip" and "pnv-xive" on the main system bus Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 17/24] pnv/psi: Correct the pnv-psi* devices not to be sysbus devices Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 18/24] display/sm501 display/ati: Fix to realize "i2c-ddc" Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 19/24] riscv: Fix to put "riscv.hart_array" devices on sysbus Markus Armbruster
2020-06-09 12:23   ` Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 20/24] riscv: Fix type of SiFive[EU]SocState, member parent_obj Markus Armbruster
2020-06-09 12:23   ` Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 21/24] sparc/leon3: Fix to put grlib,* devices on sysbus Markus Armbruster
2020-06-09 13:07   ` [PATCH v3 21/24] sparc/leon3: Fix to put grlib, * " Artyom Tarasenko
2020-06-09 12:23 ` [PATCH v3 22/24] qdev: Assert devices are plugged into a bus that can take them Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 23/24] sd: Hide the qdev-but-not-quite thing created by sd_init() Markus Armbruster
2020-06-09 12:23 ` [PATCH v3 24/24] qdev: Assert onboard devices all get realized properly Markus Armbruster

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