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

[Markus Armbruster <armbru@redhat.com>]

Li Qiang <liq3ea@gmail.com> writes:

> Signed-off-by: Li Qiang <liq3ea@gmail.com>
> ---
>  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?

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);