Re: [PATCH 1/3] pci: Add a generic, weakly-linked pcibios_fixup_bus

2017-06-24 Thread Palmer Dabbelt 
On Sat, 24 Jun 2017 02:34:06 PDT (-0700), ge...@linux-m68k.org wrote:
> Hi Palmer,
>
> On Sat, Jun 24, 2017 at 3:50 AM, Palmer Dabbelt  wrote:
>> Multiple architectures define this as an empty function, and I'm adding
>> another one as part of the RISC-V port.  This adds a __weak version of
>> pci_fixup_bios and deletes the now obselete ones in a handful of ports.
>>
>> The only functional change should be that microblaze used to export
>> pcibios_fixup_bus.  None of the other architectures export this, so I
>> just dropped it.
>>
>> Signed-off-by: Palmer Dabbelt 
>
> Given this is an empty function, wouldn't it make more sense to have
> a static inline in asm-generic, protected by #ifndef pcibios_fixup_bus?

I think the PCI people were considering changing this from a per-arch function
to a per-controller function, so I think the inline won't help any there.  I
think since they hope to eventually clean up all the __weak functions it fits a
bit better this way, but I'm really fine with anything here.

Re: [PATCH 1/3] pci: Add a generic, weakly-linked pcibios_fixup_bus

2017-06-24 Thread Palmer Dabbelt 
On Sat, 24 Jun 2017 02:34:06 PDT (-0700), ge...@linux-m68k.org wrote:
> Hi Palmer,
>
> On Sat, Jun 24, 2017 at 3:50 AM, Palmer Dabbelt  wrote:
>> Multiple architectures define this as an empty function, and I'm adding
>> another one as part of the RISC-V port.  This adds a __weak version of
>> pci_fixup_bios and deletes the now obselete ones in a handful of ports.
>>
>> The only functional change should be that microblaze used to export
>> pcibios_fixup_bus.  None of the other architectures export this, so I
>> just dropped it.
>>
>> Signed-off-by: Palmer Dabbelt 
>
> Given this is an empty function, wouldn't it make more sense to have
> a static inline in asm-generic, protected by #ifndef pcibios_fixup_bus?

I think the PCI people were considering changing this from a per-arch function
to a per-controller function, so I think the inline won't help any there.  I
think since they hope to eventually clean up all the __weak functions it fits a
bit better this way, but I'm really fine with anything here.

Re: [PATCH 1/3] pci: Add a generic, weakly-linked pcibios_fixup_bus

2017-06-24 Thread Geert Uytterhoeven 
Hi Palmer,

On Sat, Jun 24, 2017 at 3:50 AM, Palmer Dabbelt  wrote:
> Multiple architectures define this as an empty function, and I'm adding
> another one as part of the RISC-V port.  This adds a __weak version of
> pci_fixup_bios and deletes the now obselete ones in a handful of ports.
>
> The only functional change should be that microblaze used to export
> pcibios_fixup_bus.  None of the other architectures export this, so I
> just dropped it.
>
> Signed-off-by: Palmer Dabbelt 

Given this is an empty function, wouldn't it make more sense to have
a static inline in asm-generic, protected by #ifndef pcibios_fixup_bus?

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

Re: [PATCH 1/3] pci: Add a generic, weakly-linked pcibios_fixup_bus

2017-06-24 Thread Geert Uytterhoeven 
Hi Palmer,

On Sat, Jun 24, 2017 at 3:50 AM, Palmer Dabbelt  wrote:
> Multiple architectures define this as an empty function, and I'm adding
> another one as part of the RISC-V port.  This adds a __weak version of
> pci_fixup_bios and deletes the now obselete ones in a handful of ports.
>
> The only functional change should be that microblaze used to export
> pcibios_fixup_bus.  None of the other architectures export this, so I
> just dropped it.
>
> Signed-off-by: Palmer Dabbelt 

Given this is an empty function, wouldn't it make more sense to have
a static inline in asm-generic, protected by #ifndef pcibios_fixup_bus?

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

[PATCH 1/3] pci: Add a generic, weakly-linked pcibios_fixup_bus

2017-06-23 Thread Palmer Dabbelt 
Multiple architectures define this as an empty function, and I'm adding
another one as part of the RISC-V port.  This adds a __weak version of
pci_fixup_bios and deletes the now obselete ones in a handful of ports.

The only functional change should be that microblaze used to export
pcibios_fixup_bus.  None of the other architectures export this, so I
just dropped it.

Signed-off-by: Palmer Dabbelt 
---
 arch/arc/kernel/pcibios.c |  4 
 arch/arm64/kernel/pci.c   |  8 
 arch/cris/arch-v32/drivers/pci/bios.c |  4 
 arch/microblaze/pci/pci-common.c  |  6 --
 arch/s390/pci/pci.c   |  4 
 arch/sh/drivers/pci/pci.c |  8 
 arch/sparc/kernel/pci.c   |  4 
 arch/tile/kernel/pci.c|  8 
 arch/tile/kernel/pci_gx.c |  5 -
 drivers/pci/probe.c   | 10 ++
 10 files changed, 10 insertions(+), 51 deletions(-)

diff --git a/arch/arc/kernel/pcibios.c b/arch/arc/kernel/pcibios.c
index 72e1d73d0bd6..1c8df8fd5fed 100644
--- a/arch/arc/kernel/pcibios.c
+++ b/arch/arc/kernel/pcibios.c
@@ -16,7 +16,3 @@ resource_size_t pcibios_align_resource(void *data, const 
struct resource *res,
 {
return res->start;
 }
-
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index c7e3e6387a49..4c7f451aca05 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -23,14 +23,6 @@
 #include 
 
 /*
- * Called after each bus is probed, but before its children are examined
- */
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-   /* nothing to do, expected to be removed in the future */
-}
-
-/*
  * We don't have to worry about legacy ISA devices, so nothing to do here
  */
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
diff --git a/arch/cris/arch-v32/drivers/pci/bios.c 
b/arch/cris/arch-v32/drivers/pci/bios.c
index 394c2a73d5e2..5cc622c0225e 100644
--- a/arch/cris/arch-v32/drivers/pci/bios.c
+++ b/arch/cris/arch-v32/drivers/pci/bios.c
@@ -2,10 +2,6 @@
 #include 
 #include 
 
-void pcibios_fixup_bus(struct pci_bus *b)
-{
-}
-
 void pcibios_set_master(struct pci_dev *dev)
 {
u8 lat;
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 404fb38d06b7..940f266e5d5c 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -810,12 +810,6 @@ void pcibios_setup_bus_devices(struct pci_bus *bus)
}
 }
 
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-   /* nothing to do */
-}
-EXPORT_SYMBOL(pcibios_fixup_bus);
-
 /*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 8051df109db3..98a54dd63483 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -234,10 +234,6 @@ static int zpci_cfg_store(struct zpci_dev *zdev, int 
offset, u32 val, u8 len)
return rc;
 }
 
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
-
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
   resource_size_t size,
   resource_size_t align)
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index c99ee286b69f..749642e1272e 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -155,14 +155,6 @@ static int __init pcibios_init(void)
 subsys_initcall(pcibios_init);
 
 /*
- *  Called after each bus is probed, but before its children
- *  are examined.
- */
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
-
-/*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
  * addresses to be allocated in the 0x000-0x0ff region
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 7eceaa10836f..78d3dc25e126 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -690,10 +690,6 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
return bus;
 }
 
-void pcibios_fixup_bus(struct pci_bus *pbus)
-{
-}
-
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
resource_size_t size, resource_size_t align)
 {
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index bc6656b5708b..3113d4d5c329 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -369,14 +369,6 @@ int __init pcibios_init(void)
 }
 subsys_initcall(pcibios_init);
 
-/*
- * No bus fixups needed.
- */
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-   /* Nothing needs to be done. */
-}
-
 void pcibios_set_master(struct pci_dev *dev)
 {
/* No special bus mastering setup handling. */
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index b554a68eea1b..b89172b592cc 100644
---

[PATCH 1/3] pci: Add a generic, weakly-linked pcibios_fixup_bus

2017-06-23 Thread Palmer Dabbelt 
Multiple architectures define this as an empty function, and I'm adding
another one as part of the RISC-V port.  This adds a __weak version of
pci_fixup_bios and deletes the now obselete ones in a handful of ports.

The only functional change should be that microblaze used to export
pcibios_fixup_bus.  None of the other architectures export this, so I
just dropped it.

Signed-off-by: Palmer Dabbelt 
---
 arch/arc/kernel/pcibios.c |  4 
 arch/arm64/kernel/pci.c   |  8 
 arch/cris/arch-v32/drivers/pci/bios.c |  4 
 arch/microblaze/pci/pci-common.c  |  6 --
 arch/s390/pci/pci.c   |  4 
 arch/sh/drivers/pci/pci.c |  8 
 arch/sparc/kernel/pci.c   |  4 
 arch/tile/kernel/pci.c|  8 
 arch/tile/kernel/pci_gx.c |  5 -
 drivers/pci/probe.c   | 10 ++
 10 files changed, 10 insertions(+), 51 deletions(-)

diff --git a/arch/arc/kernel/pcibios.c b/arch/arc/kernel/pcibios.c
index 72e1d73d0bd6..1c8df8fd5fed 100644
--- a/arch/arc/kernel/pcibios.c
+++ b/arch/arc/kernel/pcibios.c
@@ -16,7 +16,3 @@ resource_size_t pcibios_align_resource(void *data, const 
struct resource *res,
 {
return res->start;
 }
-
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index c7e3e6387a49..4c7f451aca05 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -23,14 +23,6 @@
 #include 
 
 /*
- * Called after each bus is probed, but before its children are examined
- */
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-   /* nothing to do, expected to be removed in the future */
-}
-
-/*
  * We don't have to worry about legacy ISA devices, so nothing to do here
  */
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
diff --git a/arch/cris/arch-v32/drivers/pci/bios.c 
b/arch/cris/arch-v32/drivers/pci/bios.c
index 394c2a73d5e2..5cc622c0225e 100644
--- a/arch/cris/arch-v32/drivers/pci/bios.c
+++ b/arch/cris/arch-v32/drivers/pci/bios.c
@@ -2,10 +2,6 @@
 #include 
 #include 
 
-void pcibios_fixup_bus(struct pci_bus *b)
-{
-}
-
 void pcibios_set_master(struct pci_dev *dev)
 {
u8 lat;
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 404fb38d06b7..940f266e5d5c 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -810,12 +810,6 @@ void pcibios_setup_bus_devices(struct pci_bus *bus)
}
 }
 
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-   /* nothing to do */
-}
-EXPORT_SYMBOL(pcibios_fixup_bus);
-
 /*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 8051df109db3..98a54dd63483 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -234,10 +234,6 @@ static int zpci_cfg_store(struct zpci_dev *zdev, int 
offset, u32 val, u8 len)
return rc;
 }
 
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
-
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
   resource_size_t size,
   resource_size_t align)
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index c99ee286b69f..749642e1272e 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -155,14 +155,6 @@ static int __init pcibios_init(void)
 subsys_initcall(pcibios_init);
 
 /*
- *  Called after each bus is probed, but before its children
- *  are examined.
- */
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
-
-/*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
  * addresses to be allocated in the 0x000-0x0ff region
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 7eceaa10836f..78d3dc25e126 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -690,10 +690,6 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
return bus;
 }
 
-void pcibios_fixup_bus(struct pci_bus *pbus)
-{
-}
-
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
resource_size_t size, resource_size_t align)
 {
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index bc6656b5708b..3113d4d5c329 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -369,14 +369,6 @@ int __init pcibios_init(void)
 }
 subsys_initcall(pcibios_init);
 
-/*
- * No bus fixups needed.
- */
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-   /* Nothing needs to be done. */
-}
-
 void pcibios_set_master(struct pci_dev *dev)
 {
/* No special bus mastering setup handling. */
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index b554a68eea1b..b89172b592cc 100644
--- a/arch/tile/kernel/pci_gx.c