linux-kernel - Re: [PATCH v2] drm/nouveau/bios: Rename prom

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Message-ID: <8735ggeih2.fsf@mpe.ellerman.id.au>
Date:   Tue, 07 Jun 2022 23:00:41 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Lyude Paul <lyude@...hat.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Ben Skeggs <bskeggs@...hat.com>,
        Karol Herbst <kherbst@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/nouveau/bios: Rename prom_init() and friends
 functions

Lyude Paul <lyude@...hat.com> writes:
> Reviewed-by: Lyude Paul <lyude@...hat.com>
>
> Will push to drm-misc-next

I don't see this patch in mainline or drm-misc-next, did it get lost?

cheers

> On Sat, 2022-03-19 at 11:27 +0100, Christophe Leroy wrote:
>> While working at fixing powerpc headers, I ended up with the
>> following error.
>> 
>>         drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c:48:1: error:
>> conflicting types for 'prom_init'; have 'void *(struct nvkm_bios *, const
>> char *)'
>>         make[5]: *** [scripts/Makefile.build:288:
>> drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.o] Error 1
>> 
>> powerpc and a few other architectures have a prom_init() global function.
>> One day or another it will conflict with the one in shadowrom.c
>> 
>> Those being static, they can easily be renamed. Do it.
>> 
>> While at it, also rename the ops structure as 'nvbios_prom' instead of
>> 'nvbios_rom' in order to make it clear that it refers to the
>> NV_PROM device.
>> 
>> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
>> ---
>> v2: using nvbios_prom prefix instead of nvbios_rom. Changed structure name
>> to keep things consistant.
>> 
>>  drivers/gpu/drm/nouveau/nvkm/subdev/bios/priv.h    |  2 +-
>>  drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c  |  2 +-
>>  .../gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c   | 14 +++++++-------
>>  3 files changed, 9 insertions(+), 9 deletions(-)
>> 
>> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/priv.h
>> b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/priv.h
>> index fac1bff1311b..cfa8a0c356dd 100644
>> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/priv.h
>> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/priv.h
>> @@ -19,7 +19,7 @@ struct nvbios_source {
>>  int nvbios_extend(struct nvkm_bios *, u32 length);
>>  int nvbios_shadow(struct nvkm_bios *);
>>  
>> -extern const struct nvbios_source nvbios_rom;
>> +extern const struct nvbios_source nvbios_prom;
>>  extern const struct nvbios_source nvbios_ramin;
>>  extern const struct nvbios_source nvbios_acpi_fast;
>>  extern const struct nvbios_source nvbios_acpi_slow;
>> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
>> b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
>> index 4b571cc6bc70..19188683c8fc 100644
>> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
>> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
>> @@ -171,7 +171,7 @@ nvbios_shadow(struct nvkm_bios *bios)
>>         struct shadow mthds[] = {
>>                 { 0, &nvbios_of },
>>                 { 0, &nvbios_ramin },
>> -               { 0, &nvbios_rom },
>> +               { 0, &nvbios_prom },
>>                 { 0, &nvbios_acpi_fast },
>>                 { 4, &nvbios_acpi_slow },
>>                 { 1, &nvbios_pcirom },
>> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
>> b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
>> index ffa4b395220a..39144ceb117b 100644
>> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
>> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
>> @@ -25,7 +25,7 @@
>>  #include <subdev/pci.h>
>>  
>>  static u32
>> -prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
>> +nvbios_prom_read(void *data, u32 offset, u32 length, struct nvkm_bios
>> *bios)
>>  {
>>         struct nvkm_device *device = data;
>>         u32 i;
>> @@ -38,14 +38,14 @@ prom_read(void *data, u32 offset, u32 length, struct
>> nvkm_bios *bios)
>>  }
>>  
>>  static void
>> -prom_fini(void *data)
>> +nvbios_prom_fini(void *data)
>>  {
>>         struct nvkm_device *device = data;
>>         nvkm_pci_rom_shadow(device->pci, true);
>>  }
>>  
>>  static void *
>> -prom_init(struct nvkm_bios *bios, const char *name)
>> +nvbios_prom_init(struct nvkm_bios *bios, const char *name)
>>  {
>>         struct nvkm_device *device = bios->subdev.device;
>>         if (device->card_type == NV_40 && device->chipset >= 0x4c)
>> @@ -55,10 +55,10 @@ prom_init(struct nvkm_bios *bios, const char *name)
>>  }
>>  
>>  const struct nvbios_source
>> -nvbios_rom = {
>> +nvbios_prom = {
>>         .name = "PROM",
>> -       .init = prom_init,
>> -       .fini = prom_fini,
>> -       .read = prom_read,
>> +       .init = nvbios_prom_init,
>> +       .fini = nvbios_prom_fini,
>> +       .read = nvbios_prom_read,
>>         .rw = false,
>>  };
>
> -- 
> Cheers,
>  Lyude Paul (she/her)
>  Software Engineer at Red Hat