Re: [Qemu-devel] [PATCH 1/2] hw: pc: use TYPE_XXX instead of constant strings

[Li Qiang]

Markus Armbruster <address@hidden> 于2018年11月27日周二 下午2:59写道：

> Li Qiang <address@hidden> writes:
>
> > Signed-off-by: Li Qiang <address@hidden>
> > ---
> >  hw/i386/pc.c         | 9 +++------
> >  hw/sparc64/sun4u.c   | 2 +-
> >  include/hw/i386/pc.h | 7 +++++++
> >  3 files changed, 11 insertions(+), 7 deletions(-)
> >
> > diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> > index f095725dba..5d3fd86b83 100644
> > --- a/hw/i386/pc.c
> > +++ b/hw/i386/pc.c
> > @@ -502,9 +502,6 @@ void pc_cmos_init(PCMachineState *pcms,
> >      qemu_register_reset(pc_cmos_init_late, &arg);
> >  }
> >
> > -#define TYPE_PORT92 "port92"
> > -#define PORT92(obj) OBJECT_CHECK(Port92State, (obj), TYPE_PORT92)
> > -
> >  /* port 92 stuff: could be split off */
> >  typedef struct Port92State {
> >      ISADevice parent_obj;
> > @@ -1543,10 +1540,10 @@ static void pc_superio_init(ISABus *isa_bus,
> bool create_fdctrl, bool no_vmport)
> >          fdctrl_init_isa(isa_bus, fd);
> >      }
> >
> > -    i8042 = isa_create_simple(isa_bus, "i8042");
> > +    i8042 = isa_create_simple(isa_bus, TYPE_I8042);
> >      if (!no_vmport) {
> >          vmport_init(isa_bus);
> > -        vmmouse = isa_try_create(isa_bus, "vmmouse");
> > +        vmmouse = isa_try_create(isa_bus, TYPE_VMMOUSE);
> >      } else {
> >          vmmouse = NULL;
> >      }
> > @@ -1555,7 +1552,7 @@ static void pc_superio_init(ISABus *isa_bus, bool
> create_fdctrl, bool no_vmport)
> >          qdev_prop_set_ptr(dev, "ps2_mouse", i8042);
> >          qdev_init_nofail(dev);
> >      }
> > -    port92 = isa_create_simple(isa_bus, "port92");
> > +    port92 = isa_create_simple(isa_bus, TYPE_PORT92);
> >
> >      a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
> >      i8042_setup_a20_line(i8042, a20_line[0]);
> > diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
> > index f76b19e4e9..c49a416b95 100644
> > --- a/hw/sparc64/sun4u.c
> > +++ b/hw/sparc64/sun4u.c
> > @@ -305,7 +305,7 @@ static void ebus_realize(PCIDevice *pci_dev, Error
> **errp)
> >      parallel_hds_isa_init(s->isa_bus, MAX_PARALLEL_PORTS);
> >
> >      /* Keyboard */
> > -    isa_create_simple(s->isa_bus, "i8042");
> > +    isa_create_simple(s->isa_bus, TYPE_I8042);
> >
> >      /* Floppy */
> >      for (i = 0; i < MAX_FD; i++) {
> > diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> > index 136fe497b6..29db770d86 100644
> > --- a/include/hw/i386/pc.h
> > +++ b/include/hw/i386/pc.h
> > @@ -169,6 +169,13 @@ void gsi_handler(void *opaque, int n, int level);
> >  #define TYPE_VMPORT "vmport"
> >  typedef uint32_t (VMPortReadFunc)(void *opaque, uint32_t address);
> >
> > +#define TYPE_PORT92 "port92"
> > +#define PORT92(obj) OBJECT_CHECK(Port92State, (obj), TYPE_PORT92)
>
> Why move these to the header?  They're used only in hw/i386/pc.c.
>
> > +
> > +/* vmmouse.c */
> > +#define TYPE_VMMOUSE "vmmouse"
> > +#define VMMOUSE(obj) OBJECT_CHECK(VMMouseState, (obj), TYPE_VMMOUSE)
> > +
>
> Likewise, why define these in the header?
>
>
Hello Markus,

Thanks for your review.
Seems there is an error.  I have made a new revision just touch the
necessary code.
A new revision has been sent out.

Thanks,
Li Qiang


> TYPE_VMMOUSE is used just once, in hw/i386/pc.c.  VMMOUSE() isn't used
> at all.  I'm okay with adding macros anyway, for consistency.
>
> >  static inline void vmport_init(ISABus *bus)
> >  {
> >      isa_create_simple(bus, TYPE_VMPORT);
>