QOM patches for 2020-06-15

[PULL 55/84] usb: Eliminate usb_try_create_simple()

Markus Armbruster posted 84 patches 5 years, 5 months ago

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Maintainers: Eduardo Habkost <ehabkost@redhat.com>, Leif Lindholm <leif@nuviainc.com>, Michael Walle <michael@walle.cc>, Chris Wulff <crwulff@gmail.com>, Matthew Rosato <mjrosato@linux.ibm.com>, Max Filippov <jcmvbkbc@gmail.com>, Juan Quintela <quintela@redhat.com>, Aurelien Jarno <aurelien@aurel32.net>, Fam Zheng <fam@euphon.net>, "Cédric Le Goater" <clg@kaod.org>, Fabien Chouteau <chouteau@adacore.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, BALATON Zoltan <balaton@eik.bme.hu>, Sagar Karandikar <sagark@eecs.berkeley.edu>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Andrzej Zaborowski <balrogg@gmail.com>, Andrew Jeffery <andrew@aj.id.au>, Cornelia Huck <cohuck@redhat.com>, Alistair Francis <Alistair.Francis@wdc.com>, Paul Burton <pburton@wavecomp.com>, Stefano Stabellini <sstabellini@kernel.org>, Subbaraya Sundeep <sundeep.lkml@gmail.com>, Helge Deller <deller@gmx.de>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Radoslaw Biernacki <radoslaw.biernacki@linaro.org>, John Snow <jsnow@redhat.com>, Halil Pasic <pasic@linux.ibm.com>, Anthony Perard <anthony.perard@citrix.com>, Jan Kiszka <jan.kiszka@web.de>, "Michael S. Tsirkin" <mst@redhat.com>, Tony Krowiak <akrowiak@linux.ibm.com>, Joel Stanley <joel@jms.id.au>, Rob Herring <robh@kernel.org>, Paul Durrant <paul@xen.org>, Jason Wang <jasowang@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, Jean-Christophe Dubois <jcd@tribudubois.net>, Peter Maydell <peter.maydell@linaro.org>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Samuel Thibault <samuel.thibault@ens-lyon.org>, "Philippe Mathieu-Daudé" <philmd@redhat.com>, David Hildenbrand <david@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Thomas Huth <thuth@redhat.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Jia Liu <proljc@gmail.com>, Andrey Smirnov <andrew.smirnov@gmail.com>, KONRAD Frederic <frederic.konrad@adacore.com>, Beniamino Galvani <b.galvani@gmail.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Laurent Vivier <laurent@vivier.eu>, Max Reitz <mreitz@redhat.com>, Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Richard Henderson <rth@twiddle.net>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Corey Minyard <cminyard@mvista.com>, Huacai Chen <chenhc@lemote.com>, Gerd Hoffmann <kraxel@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Peter Chubb <peter.chubb@nicta.com.au>, Paolo Bonzini <pbonzini@redhat.com>, Magnus Damm <magnus.damm@gmail.com>, Igor Mammedov <imammedo@redhat.com>, Pierre Morel <pmorel@linux.ibm.com>, Alistair Francis <alistair@alistair23.me>, Laszlo Ersek <lersek@redhat.com>, Andrew Baumann <Andrew.Baumann@microsoft.com>, Marek Vasut <marex@denx.de>, "Hervé Poussineau" <hpoussin@reactos.org>, Thomas Huth <huth@tuxfamily.org>, Stafford Horne <shorne@gmail.com>, Igor Mitsyanko <i.mitsyanko@gmail.com>, Palmer Dabbelt <palmer@dabbelt.com>, Artyom Tarasenko <atar4qemu@gmail.com>, Niek Linnenbank <nieklinnenbank@gmail.com>, Antony Pavlov <antonynpavlov@gmail.com>

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[PULL 55/84] usb: Eliminate usb_try_create_simple()

Posted by Markus Armbruster 5 years, 5 months ago

usb_try_create_simple() is qdev_try_new() and qdev_realize_and_unref()
with more verbose error messages.  Of its two users, one ignores
errors, and the other asserts they are impossible.

Make them use qdev_try_new() and qdev_realize_and_unref() directly,
and eliminate usb_try_create_simple

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-30-armbru@redhat.com>
---
 hw/usb/bus.c | 37 ++++++++++++++-----------------------
 1 file changed, 14 insertions(+), 23 deletions(-)

diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index 5c4d31614e..a81aee2051 100644
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -318,35 +318,22 @@ USBDevice *usb_new(const char *name)
     return USB_DEVICE(qdev_new(name));
 }
 
+static USBDevice *usb_try_new(const char *name)
+{
+    return USB_DEVICE(qdev_try_new(name));
+}
+
 bool usb_realize_and_unref(USBDevice *dev, USBBus *bus, Error **errp)
 {
     return qdev_realize_and_unref(&dev->qdev, &bus->qbus, errp);
 }
 
-static USBDevice *usb_try_create_simple(USBBus *bus, const char *name,
-                                        Error **errp)
-{
-    Error *err = NULL;
-    DeviceState *dev;
-
-    dev = qdev_try_new(name);
-    if (!dev) {
-        error_setg(errp, "Failed to create USB device '%s'", name);
-        return NULL;
-    }
-    qdev_realize_and_unref(dev, &bus->qbus, &err);
-    if (err) {
-        error_propagate_prepend(errp, err,
-                                "Failed to initialize USB device '%s': ",
-                                name);
-        return NULL;
-    }
-    return USB_DEVICE(dev);
-}
-
 USBDevice *usb_create_simple(USBBus *bus, const char *name)
 {
-    return usb_try_create_simple(bus, name, &error_abort);
+    USBDevice *dev = usb_new(name);
+
+    usb_realize_and_unref(dev, bus, &error_abort);
+    return dev;
 }
 
 static void usb_fill_port(USBPort *port, void *opaque, int index,
@@ -426,6 +413,7 @@ void usb_claim_port(USBDevice *dev, Error **errp)
 {
     USBBus *bus = usb_bus_from_device(dev);
     USBPort *port;
+    USBDevice *hub;
 
     assert(dev->port == NULL);
 
@@ -443,7 +431,10 @@ void usb_claim_port(USBDevice *dev, Error **errp)
     } else {
         if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) {
             /* Create a new hub and chain it on */
-            usb_try_create_simple(bus, "usb-hub", NULL);
+            hub = usb_try_new("usb-hub");
+            if (hub) {
+                usb_realize_and_unref(hub, bus, NULL);
+            }
         }
         if (bus->nfree == 0) {
             error_setg(errp, "tried to attach usb device %s to a bus "
-- 
2.26.2