[Qemu-devel] [PATCH v2 0/2] Eliminate usb_enabled()

[Qemu-devel] [PATCH v2 0/2] Eliminate usb_enabled()

[Eduardo Habkost]

usb_enabled() is just a wrapper for machine_usb(current_machine)
and is not necessary, replace all usages of usb_enabled() with
machine_usb().

In the case of pxa2xx, just remove usb_enabled() usage
completely.

Eduardo Habkost (2):
  pxa2xx: Unconditionally enable USB controller
  vl: Eliminate usb_enabled()

 hw/arm/nseries.c        |  2 +-
 hw/arm/pxa2xx.c         | 12 ++++--------
 hw/arm/realview.c       |  2 +-
 hw/arm/versatilepb.c    |  2 +-
 hw/i386/pc_piix.c       |  2 +-
 hw/i386/pc_q35.c        |  2 +-
 hw/ppc/mac_oldworld.c   |  2 +-
 hw/ppc/prep.c           |  2 +-
 include/sysemu/sysemu.h |  1 -
 vl.c                    | 11 +++--------
 10 files changed, 14 insertions(+), 24 deletions(-)

-- 
2.5.5

[Qemu-devel] [PATCH v2 1/2] pxa2xx: Unconditionally enable USB controller

[Eduardo Habkost]

Simplify initialization logic by removing the usb_enabled()
check. The USB controller is part of the SoC, so it doesn't make
sense to create a system where it is not present.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: qemu-arm@nongnu.org,
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/arm/pxa2xx.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index e41a7c9..cb55704 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -2165,10 +2165,8 @@ PXA2xxState *pxa270_init(MemoryRegion *address_space,
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
-    if (usb_enabled()) {
-        sysbus_create_simple("sysbus-ohci", 0x4c000000,
-                        qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
-    }
+    sysbus_create_simple("sysbus-ohci", 0x4c000000,
+                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
 
     s->pcmcia[0] = pxa2xx_pcmcia_init(address_space, 0x20000000);
     s->pcmcia[1] = pxa2xx_pcmcia_init(address_space, 0x30000000);
@@ -2298,10 +2296,8 @@ PXA2xxState *pxa255_init(MemoryRegion *address_space, unsigned int sdram_size)
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
-    if (usb_enabled()) {
-        sysbus_create_simple("sysbus-ohci", 0x4c000000,
-                        qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
-    }
+    sysbus_create_simple("sysbus-ohci", 0x4c000000,
+                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
 
     s->pcmcia[0] = pxa2xx_pcmcia_init(address_space, 0x20000000);
     s->pcmcia[1] = pxa2xx_pcmcia_init(address_space, 0x30000000);
-- 
2.5.5

Re: [Qemu-devel] [PATCH v2 1/2] pxa2xx: Unconditionally enable USB controller

[Peter Maydell]

On 8 June 2016 at 21:50, Eduardo Habkost <ehabkost@redhat.com> wrote:
> Simplify initialization logic by removing the usb_enabled()
> check. The USB controller is part of the SoC, so it doesn't make
> sense to create a system where it is not present.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Andrzej Zaborowski <balrogg@gmail.com>
> Cc: qemu-arm@nongnu.org,
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM

[Qemu-devel] [PATCH v2 2/2] vl: Eliminate usb_enabled()

[Eduardo Habkost]

This wrapper for machine_usb(current_machine) is not necessary,
replace all usages of usb_enabled() with machine_usb().

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-arm@nongnu.org
Cc: qemu-ppc@nongnu.org
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
Changes v1 -> v2:
* pxa2xx doesn't have a usb_enabled() check anymore
---
 hw/arm/nseries.c        |  2 +-
 hw/arm/realview.c       |  2 +-
 hw/arm/versatilepb.c    |  2 +-
 hw/i386/pc_piix.c       |  2 +-
 hw/i386/pc_q35.c        |  2 +-
 hw/ppc/mac_oldworld.c   |  2 +-
 hw/ppc/prep.c           |  2 +-
 include/sysemu/sysemu.h |  1 -
 vl.c                    | 11 +++--------
 9 files changed, 10 insertions(+), 16 deletions(-)

diff --git a/hw/arm/nseries.c b/hw/arm/nseries.c
index d4eb141..fea911e 100644
--- a/hw/arm/nseries.c
+++ b/hw/arm/nseries.c
@@ -1351,7 +1351,7 @@ static void n8x0_init(MachineState *machine,
     n8x0_dss_setup(s);
     n8x0_cbus_setup(s);
     n8x0_uart_setup(s);
-    if (usb_enabled()) {
+    if (machine_usb(machine)) {
         n8x0_usb_setup(s);
     }
 
diff --git a/hw/arm/realview.c b/hw/arm/realview.c
index 7d0aa6f..8eafcca 100644
--- a/hw/arm/realview.c
+++ b/hw/arm/realview.c
@@ -254,7 +254,7 @@ static void realview_init(MachineState *machine,
         sysbus_connect_irq(busdev, 2, pic[50]);
         sysbus_connect_irq(busdev, 3, pic[51]);
         pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
-        if (usb_enabled()) {
+        if (machine_usb(machine)) {
             pci_create_simple(pci_bus, -1, "pci-ohci");
         }
         n = drive_get_max_bus(IF_SCSI);
diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
index 20dd356..8ae5392 100644
--- a/hw/arm/versatilepb.c
+++ b/hw/arm/versatilepb.c
@@ -276,7 +276,7 @@ static void versatile_init(MachineState *machine, int board_id)
             pci_nic_init_nofail(nd, pci_bus, "rtl8139", NULL);
         }
     }
-    if (usb_enabled()) {
+    if (machine_usb(machine)) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
     n = drive_get_max_bus(IF_SCSI);
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 14dd0cc..82c7c0a 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -262,7 +262,7 @@ static void pc_init1(MachineState *machine,
 
     pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
 
-    if (pcmc->pci_enabled && usb_enabled()) {
+    if (pcmc->pci_enabled && machine_usb(machine)) {
         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
     }
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 04aae89..31a6a59 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -234,7 +234,7 @@ static void pc_q35_init(MachineState *machine)
     ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports);
     ahci_ide_create_devs(ahci, hd);
 
-    if (usb_enabled()) {
+    if (machine_usb(machine)) {
         /* Should we create 6 UHCI according to ich9 spec? */
         ehci_create_ich9_with_companions(host_bus, 0x1d);
     }
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index a9bb1c2..4479487 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -309,7 +309,7 @@ static void ppc_heathrow_init(MachineState *machine)
     dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
     qdev_init_nofail(dev);
 
-    if (usb_enabled()) {
+    if (machine_usb(machine)) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
 
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index 07ffe72..054af1e 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -649,7 +649,7 @@ static void ppc_prep_init(MachineState *machine)
     memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
 #endif
 
-    if (usb_enabled()) {
+    if (machine_usb(machine)) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
 
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 9428141..7313673 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -233,7 +233,6 @@ void qemu_boot_set(const char *boot_order, Error **errp);
 QemuOpts *qemu_get_machine_opts(void);
 
 bool defaults_enabled(void);
-bool usb_enabled(void);
 
 extern QemuOptsList qemu_legacy_drive_opts;
 extern QemuOptsList qemu_common_drive_opts;
diff --git a/vl.c b/vl.c
index b0bcc25..45eff56 100644
--- a/vl.c
+++ b/vl.c
@@ -1072,11 +1072,6 @@ bool defaults_enabled(void)
     return has_defaults;
 }
 
-bool usb_enabled(void)
-{
-    return machine_usb(current_machine);
-}
-
 #ifndef _WIN32
 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
 {
@@ -1393,7 +1388,7 @@ static int usb_device_add(const char *devname)
     const char *p;
 #endif
 
-    if (!usb_enabled()) {
+    if (!machine_usb(current_machine)) {
         return -1;
     }
 
@@ -1425,7 +1420,7 @@ static int usb_device_del(const char *devname)
         return -1;
     }
 
-    if (!usb_enabled()) {
+    if (!machine_usb(current_machine)) {
         return -1;
     }
 
@@ -4501,7 +4496,7 @@ int main(int argc, char **argv, char **envp)
     }
 
     /* init USB devices */
-    if (usb_enabled()) {
+    if (machine_usb(current_machine)) {
         if (foreach_device_config(DEV_USB, usb_parse) < 0)
             exit(1);
     }
-- 
2.5.5

Re: [Qemu-devel] [PATCH v2 2/2] vl: Eliminate usb_enabled()

[Marcel Apfelbaum]

On 06/08/2016 11:50 PM, Eduardo Habkost wrote:
> This wrapper for machine_usb(current_machine) is not necessary,
> replace all usages of usb_enabled() with machine_usb().
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
> Changes v1 -> v2:
> * pxa2xx doesn't have a usb_enabled() check anymore
> ---
>   hw/arm/nseries.c        |  2 +-
>   hw/arm/realview.c       |  2 +-
>   hw/arm/versatilepb.c    |  2 +-
>   hw/i386/pc_piix.c       |  2 +-
>   hw/i386/pc_q35.c        |  2 +-
>   hw/ppc/mac_oldworld.c   |  2 +-
>   hw/ppc/prep.c           |  2 +-
>   include/sysemu/sysemu.h |  1 -
>   vl.c                    | 11 +++--------
>   9 files changed, 10 insertions(+), 16 deletions(-)
>
> diff --git a/hw/arm/nseries.c b/hw/arm/nseries.c
> index d4eb141..fea911e 100644
> --- a/hw/arm/nseries.c
> +++ b/hw/arm/nseries.c
> @@ -1351,7 +1351,7 @@ static void n8x0_init(MachineState *machine,
>       n8x0_dss_setup(s);
>       n8x0_cbus_setup(s);
>       n8x0_uart_setup(s);
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>           n8x0_usb_setup(s);
>       }
>
> diff --git a/hw/arm/realview.c b/hw/arm/realview.c
> index 7d0aa6f..8eafcca 100644
> --- a/hw/arm/realview.c
> +++ b/hw/arm/realview.c
> @@ -254,7 +254,7 @@ static void realview_init(MachineState *machine,
>           sysbus_connect_irq(busdev, 2, pic[50]);
>           sysbus_connect_irq(busdev, 3, pic[51]);
>           pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
> -        if (usb_enabled()) {
> +        if (machine_usb(machine)) {
>               pci_create_simple(pci_bus, -1, "pci-ohci");
>           }
>           n = drive_get_max_bus(IF_SCSI);
> diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
> index 20dd356..8ae5392 100644
> --- a/hw/arm/versatilepb.c
> +++ b/hw/arm/versatilepb.c
> @@ -276,7 +276,7 @@ static void versatile_init(MachineState *machine, int board_id)
>               pci_nic_init_nofail(nd, pci_bus, "rtl8139", NULL);
>           }
>       }
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>           pci_create_simple(pci_bus, -1, "pci-ohci");
>       }
>       n = drive_get_max_bus(IF_SCSI);
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 14dd0cc..82c7c0a 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -262,7 +262,7 @@ static void pc_init1(MachineState *machine,
>
>       pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
>
> -    if (pcmc->pci_enabled && usb_enabled()) {
> +    if (pcmc->pci_enabled && machine_usb(machine)) {
>           pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
>       }
>
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index 04aae89..31a6a59 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -234,7 +234,7 @@ static void pc_q35_init(MachineState *machine)
>       ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports);
>       ahci_ide_create_devs(ahci, hd);
>
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>           /* Should we create 6 UHCI according to ich9 spec? */
>           ehci_create_ich9_with_companions(host_bus, 0x1d);
>       }
> diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
> index a9bb1c2..4479487 100644
> --- a/hw/ppc/mac_oldworld.c
> +++ b/hw/ppc/mac_oldworld.c
> @@ -309,7 +309,7 @@ static void ppc_heathrow_init(MachineState *machine)
>       dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
>       qdev_init_nofail(dev);
>
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>           pci_create_simple(pci_bus, -1, "pci-ohci");
>       }
>
> diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
> index 07ffe72..054af1e 100644
> --- a/hw/ppc/prep.c
> +++ b/hw/ppc/prep.c
> @@ -649,7 +649,7 @@ static void ppc_prep_init(MachineState *machine)
>       memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
>   #endif
>
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>           pci_create_simple(pci_bus, -1, "pci-ohci");
>       }
>
> diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
> index 9428141..7313673 100644
> --- a/include/sysemu/sysemu.h
> +++ b/include/sysemu/sysemu.h
> @@ -233,7 +233,6 @@ void qemu_boot_set(const char *boot_order, Error **errp);
>   QemuOpts *qemu_get_machine_opts(void);
>
>   bool defaults_enabled(void);
> -bool usb_enabled(void);
>
>   extern QemuOptsList qemu_legacy_drive_opts;
>   extern QemuOptsList qemu_common_drive_opts;
> diff --git a/vl.c b/vl.c
> index b0bcc25..45eff56 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -1072,11 +1072,6 @@ bool defaults_enabled(void)
>       return has_defaults;
>   }
>
> -bool usb_enabled(void)
> -{
> -    return machine_usb(current_machine);
> -}
> -
>   #ifndef _WIN32
>   static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
>   {
> @@ -1393,7 +1388,7 @@ static int usb_device_add(const char *devname)
>       const char *p;
>   #endif
>
> -    if (!usb_enabled()) {
> +    if (!machine_usb(current_machine)) {
>           return -1;
>       }
>
> @@ -1425,7 +1420,7 @@ static int usb_device_del(const char *devname)
>           return -1;
>       }
>
> -    if (!usb_enabled()) {
> +    if (!machine_usb(current_machine)) {
>           return -1;
>       }
>
> @@ -4501,7 +4496,7 @@ int main(int argc, char **argv, char **envp)
>       }
>
>       /* init USB devices */
> -    if (usb_enabled()) {
> +    if (machine_usb(current_machine)) {
>           if (foreach_device_config(DEV_USB, usb_parse) < 0)
>               exit(1);
>       }
>


Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>

Thanks,
Marcel

Re: [Qemu-devel] [PATCH v2 2/2] vl: Eliminate usb_enabled()

[Thomas Huth]

On 08.06.2016 22:50, Eduardo Habkost wrote:
> This wrapper for machine_usb(current_machine) is not necessary,
> replace all usages of usb_enabled() with machine_usb().
> 
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
> Changes v1 -> v2:
> * pxa2xx doesn't have a usb_enabled() check anymore
> ---
>  hw/arm/nseries.c        |  2 +-
>  hw/arm/realview.c       |  2 +-
>  hw/arm/versatilepb.c    |  2 +-
>  hw/i386/pc_piix.c       |  2 +-
>  hw/i386/pc_q35.c        |  2 +-
>  hw/ppc/mac_oldworld.c   |  2 +-
>  hw/ppc/prep.c           |  2 +-
>  include/sysemu/sysemu.h |  1 -
>  vl.c                    | 11 +++--------
>  9 files changed, 10 insertions(+), 16 deletions(-)
> 
> diff --git a/hw/arm/nseries.c b/hw/arm/nseries.c
> index d4eb141..fea911e 100644
> --- a/hw/arm/nseries.c
> +++ b/hw/arm/nseries.c
> @@ -1351,7 +1351,7 @@ static void n8x0_init(MachineState *machine,
>      n8x0_dss_setup(s);
>      n8x0_cbus_setup(s);
>      n8x0_uart_setup(s);
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>          n8x0_usb_setup(s);
>      }
>  
> diff --git a/hw/arm/realview.c b/hw/arm/realview.c
> index 7d0aa6f..8eafcca 100644
> --- a/hw/arm/realview.c
> +++ b/hw/arm/realview.c
> @@ -254,7 +254,7 @@ static void realview_init(MachineState *machine,
>          sysbus_connect_irq(busdev, 2, pic[50]);
>          sysbus_connect_irq(busdev, 3, pic[51]);
>          pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
> -        if (usb_enabled()) {
> +        if (machine_usb(machine)) {
>              pci_create_simple(pci_bus, -1, "pci-ohci");
>          }
>          n = drive_get_max_bus(IF_SCSI);
> diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
> index 20dd356..8ae5392 100644
> --- a/hw/arm/versatilepb.c
> +++ b/hw/arm/versatilepb.c
> @@ -276,7 +276,7 @@ static void versatile_init(MachineState *machine, int board_id)
>              pci_nic_init_nofail(nd, pci_bus, "rtl8139", NULL);
>          }
>      }
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>          pci_create_simple(pci_bus, -1, "pci-ohci");
>      }
>      n = drive_get_max_bus(IF_SCSI);
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 14dd0cc..82c7c0a 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -262,7 +262,7 @@ static void pc_init1(MachineState *machine,
>  
>      pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
>  
> -    if (pcmc->pci_enabled && usb_enabled()) {
> +    if (pcmc->pci_enabled && machine_usb(machine)) {
>          pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
>      }
>  
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index 04aae89..31a6a59 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -234,7 +234,7 @@ static void pc_q35_init(MachineState *machine)
>      ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports);
>      ahci_ide_create_devs(ahci, hd);
>  
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>          /* Should we create 6 UHCI according to ich9 spec? */
>          ehci_create_ich9_with_companions(host_bus, 0x1d);
>      }
> diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
> index a9bb1c2..4479487 100644
> --- a/hw/ppc/mac_oldworld.c
> +++ b/hw/ppc/mac_oldworld.c
> @@ -309,7 +309,7 @@ static void ppc_heathrow_init(MachineState *machine)
>      dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
>      qdev_init_nofail(dev);
>  
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>          pci_create_simple(pci_bus, -1, "pci-ohci");
>      }
>  
> diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
> index 07ffe72..054af1e 100644
> --- a/hw/ppc/prep.c
> +++ b/hw/ppc/prep.c
> @@ -649,7 +649,7 @@ static void ppc_prep_init(MachineState *machine)
>      memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
>  #endif
>  
> -    if (usb_enabled()) {
> +    if (machine_usb(machine)) {
>          pci_create_simple(pci_bus, -1, "pci-ohci");
>      }
>  
> diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
> index 9428141..7313673 100644
> --- a/include/sysemu/sysemu.h
> +++ b/include/sysemu/sysemu.h
> @@ -233,7 +233,6 @@ void qemu_boot_set(const char *boot_order, Error **errp);
>  QemuOpts *qemu_get_machine_opts(void);
>  
>  bool defaults_enabled(void);
> -bool usb_enabled(void);
>  
>  extern QemuOptsList qemu_legacy_drive_opts;
>  extern QemuOptsList qemu_common_drive_opts;
> diff --git a/vl.c b/vl.c
> index b0bcc25..45eff56 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -1072,11 +1072,6 @@ bool defaults_enabled(void)
>      return has_defaults;
>  }
>  
> -bool usb_enabled(void)
> -{
> -    return machine_usb(current_machine);
> -}
> -
>  #ifndef _WIN32
>  static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
>  {
> @@ -1393,7 +1388,7 @@ static int usb_device_add(const char *devname)
>      const char *p;
>  #endif
>  
> -    if (!usb_enabled()) {
> +    if (!machine_usb(current_machine)) {
>          return -1;
>      }
>  
> @@ -1425,7 +1420,7 @@ static int usb_device_del(const char *devname)
>          return -1;
>      }
>  
> -    if (!usb_enabled()) {
> +    if (!machine_usb(current_machine)) {
>          return -1;
>      }
>  
> @@ -4501,7 +4496,7 @@ int main(int argc, char **argv, char **envp)
>      }
>  
>      /* init USB devices */
> -    if (usb_enabled()) {
> +    if (machine_usb(current_machine)) {
>          if (foreach_device_config(DEV_USB, usb_parse) < 0)
>              exit(1);
>      }
> 

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [Qemu-devel] [PATCH v2 0/2] Eliminate usb_enabled()

[Gerd Hoffmann]

On Mi, 2016-06-08 at 17:50 -0300, Eduardo Habkost wrote:
> usb_enabled() is just a wrapper for machine_usb(current_machine)
> and is not necessary, replace all usages of usb_enabled() with
> machine_usb().
> 
> In the case of pxa2xx, just remove usb_enabled() usage
> completely.
> 
> Eduardo Habkost (2):
>   pxa2xx: Unconditionally enable USB controller
>   vl: Eliminate usb_enabled()

Added to usb patch queue.

thanks,
  Gerd