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authorPhilippe Mathieu-Daudé <f4bug@amsat.org>2021-04-25 00:41:10 +0200
committerGerd Hoffmann <kraxel@redhat.com>2021-05-04 08:38:23 +0200
commit9c3c834bdda5ca6d58c0e61508737683d12968b5 (patch)
treefb9bfcc25adfaea88177e24943acdbd2ebc27545
parent1081607bfab94a0b6149c4a2195737107aed265f (diff)
hw/usb: Do not build USB subsystem if not required
If the Kconfig 'USB' value is not selected, it is pointless to build the USB core components. Add a stub for the HMP commands and usbdevice_create() which is called by usb_device_add in softmmu/vl.c. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210424224110.3442424-3-f4bug@amsat.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-rw-r--r--MAINTAINERS1
-rw-r--r--hw/usb/meson.build9
-rw-r--r--stubs/meson.build1
-rw-r--r--stubs/usb-dev-stub.c25
4 files changed, 30 insertions, 6 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 4c05ff8bba..6f7e5db3b1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1804,6 +1804,7 @@ USB
M: Gerd Hoffmann <kraxel@redhat.com>
S: Maintained
F: hw/usb/*
+F: stubs/usb-dev-stub.c
F: tests/qtest/usb-*-test.c
F: docs/usb2.txt
F: docs/usb-storage.txt
diff --git a/hw/usb/meson.build b/hw/usb/meson.build
index fb7a74e73a..f357270d0b 100644
--- a/hw/usb/meson.build
+++ b/hw/usb/meson.build
@@ -1,17 +1,14 @@
hw_usb_modules = {}
# usb subsystem core
-softmmu_ss.add(files(
+softmmu_ss.add(when: 'CONFIG_USB', if_true: files(
'bus.c',
'combined-packet.c',
'core.c',
- 'pcap.c',
- 'libhw.c'
-))
-
-softmmu_ss.add(when: 'CONFIG_USB', if_true: files(
'desc.c',
'desc-msos.c',
+ 'libhw.c',
+ 'pcap.c',
))
# usb host adapters
diff --git a/stubs/meson.build b/stubs/meson.build
index be6f6d609e..3faef16892 100644
--- a/stubs/meson.build
+++ b/stubs/meson.build
@@ -50,6 +50,7 @@ if have_block
endif
if have_system
stub_ss.add(files('semihost.c'))
+ stub_ss.add(files('usb-dev-stub.c'))
stub_ss.add(files('xen-hw-stub.c'))
else
stub_ss.add(files('qdev.c'))
diff --git a/stubs/usb-dev-stub.c b/stubs/usb-dev-stub.c
new file mode 100644
index 0000000000..b1adeeb454
--- /dev/null
+++ b/stubs/usb-dev-stub.c
@@ -0,0 +1,25 @@
+/*
+ * QEMU USB device emulation stubs
+ *
+ * Copyright (C) 2021 Philippe Mathieu-Daudé <f4bug@amsat.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "sysemu/sysemu.h"
+#include "monitor/monitor.h"
+#include "hw/usb.h"
+
+USBDevice *usbdevice_create(const char *driver)
+{
+ error_report("Support for USB devices not built-in");
+
+ return NULL;
+}
+
+void hmp_info_usb(Monitor *mon, const QDict *qdict)
+{
+ monitor_printf(mon, "Support for USB devices not built-in\n");
+}