[PATCH next] pci: fix build error with !PCIE_ECRC

[PATCH next] pci: fix build error with !PCIE_ECRC

[Alexander Beregalov]

Fix this build error:
drivers/built-in.o: In function `pci_init_capabilities':
drivers/pci/probe.c:989: undefined reference to `pcie_set_ecrc_checking'
drivers/built-in.o: In function `pci_setup':
drivers/pci/pci.c:2547: undefined reference to `pcie_ecrc_get_policy'

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
---

 drivers/pci/pci.c        |    2 ++
 drivers/pci/pcie/Kconfig |    2 +-
 drivers/pci/probe.c      |    2 ++
 3 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f61b2cf..f1c393e 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2543,8 +2543,10 @@ static int __init pci_setup(char *str)
 			} else if (!strncmp(str, "resource_alignment=", 19)) {
 				pci_set_resource_alignment_param(str + 19,
 							strlen(str + 19));
+#ifdef CONFIG_PCIE_ECRC
 			} else if (!strncmp(str, "ecrc=", 5)) {
 				pcie_ecrc_get_policy(str + 5);
+#endif
 			} else {
 				printk(KERN_ERR "PCI: Unknown option `%s'\n",
 						str);
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig
index a79e52b..9d0e727 100644
--- a/drivers/pci/pcie/Kconfig
+++ b/drivers/pci/pcie/Kconfig
@@ -52,7 +52,7 @@ config PCIEASPM_DEBUG
 #
 config PCIE_ECRC
 	bool "PCI Express ECRC support"
-	depends on PCI
+	depends on PCI && PCIEPORTBUS
 	help
 	  Enables PCI Express ECRC (transaction layer end-to-end CRC
 	  checking)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index d5125a1..8d402a8 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -985,8 +985,10 @@ static void pci_init_capabilities(struct pci_dev *dev)
 	/* Single Root I/O Virtualization */
 	pci_iov_init(dev);
 
+#ifdef CONFIG_PCIE_ECRC
 	/* PCIe end-to-end CRC checking */
 	pcie_set_ecrc_checking(dev);
+#endif
 }
 
 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)

Re: [PATCH next] pci: fix build error with !PCIE_ECRC

[Matthew Wilcox]

On Tue, Apr 07, 2009 at 04:37:08PM +0400, Alexander Beregalov wrote:
> Fix this build error:
> drivers/built-in.o: In function `pci_init_capabilities':
> drivers/pci/probe.c:989: undefined reference to `pcie_set_ecrc_checking'
> drivers/built-in.o: In function `pci_setup':
> drivers/pci/pci.c:2547: undefined reference to `pcie_ecrc_get_policy'

>  config PCIE_ECRC
>  	bool "PCI Express ECRC support"
> -	depends on PCI
> +	depends on PCI && PCIEPORTBUS

How does this part of the patch relate to the above description?

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."

Re: [PATCH next] pci: fix build error with !PCIE_ECRC

[Alexander Beregalov]

2009/4/7 Matthew Wilcox <matthew@wil.cx>:
> On Tue, Apr 07, 2009 at 04:37:08PM +0400, Alexander Beregalov wrote:
>> Fix this build error:
>> drivers/built-in.o: In function `pci_init_capabilities':
>> drivers/pci/probe.c:989: undefined reference to `pcie_set_ecrc_checking'
>> drivers/built-in.o: In function `pci_setup':
>> drivers/pci/pci.c:2547: undefined reference to `pcie_ecrc_get_policy'
>
>>  config PCIE_ECRC
>>       bool "PCI Express ECRC support"
>> -     depends on PCI
>> +     depends on PCI && PCIEPORTBUS
>
> How does this part of the patch relate to the above description?

Right, I agree. This should be another patch "PCIE_ECRC should depend on PCIE"

When I found this problem PCIE_ECRC was set, but was not be built in.
My problem needs both patches to be fixed, I will send them few hours later.

Re: [PATCH next] pci: fix build error with !PCIE_ECRC

[Andrew Patterson]

On Tue, 2009-04-07 at 16:37 +0400, Alexander Beregalov wrote:
> Fix this build error:
> drivers/built-in.o: In function `pci_init_capabilities':
> drivers/pci/probe.c:989: undefined reference to `pcie_set_ecrc_checking'
> drivers/built-in.o: In function `pci_setup':
> drivers/pci/pci.c:2547: undefined reference to `pcie_ecrc_get_policy'
> 
> Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
> ---
> 
>  drivers/pci/pci.c        |    2 ++
>  drivers/pci/pcie/Kconfig |    2 +-
>  drivers/pci/probe.c      |    2 ++
>  3 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index f61b2cf..f1c393e 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -2543,8 +2543,10 @@ static int __init pci_setup(char *str)
>  			} else if (!strncmp(str, "resource_alignment=", 19)) {
>  				pci_set_resource_alignment_param(str + 19,
>  							strlen(str + 19));
> +#ifdef CONFIG_PCIE_ECRC
>  			} else if (!strncmp(str, "ecrc=", 5)) {
>  				pcie_ecrc_get_policy(str + 5);
> +#endif
>  			} else {
>  				printk(KERN_ERR "PCI: Unknown option `%s'\n",
>  						str);
> diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig
> index a79e52b..9d0e727 100644
> --- a/drivers/pci/pcie/Kconfig
> +++ b/drivers/pci/pcie/Kconfig
> @@ -52,7 +52,7 @@ config PCIEASPM_DEBUG
>  #
>  config PCIE_ECRC
>  	bool "PCI Express ECRC support"
> -	depends on PCI
> +	depends on PCI && PCIEPORTBUS

We really only need this.  There are empty functions in
include/linux/pci.h to handle the case where PCIE_ECRC is not defined.
The problem is that the code in drivers/pci/pcie is only compiled if
PCIEPORTBUS is defined.  This feature does not depend on any PCIEPORTBUS
code. So either ecrc.c needs to be moved to drivers/pci or we need to
not assume that drivers/pci/pcie is only for the portbus driver.


>  	help
>  	  Enables PCI Express ECRC (transaction layer end-to-end CRC
>  	  checking)
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index d5125a1..8d402a8 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -985,8 +985,10 @@ static void pci_init_capabilities(struct pci_dev *dev)
>  	/* Single Root I/O Virtualization */
>  	pci_iov_init(dev);
>  
> +#ifdef CONFIG_PCIE_ECRC
>  	/* PCIe end-to-end CRC checking */
>  	pcie_set_ecrc_checking(dev);
> +#endif
>  }
>  
>  void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
> 
-- 
Andrew Patterson
Hewlett-Packard

Re: [PATCH next] pci: fix build error with !PCIE_ECRC

[Jesse Barnes]

On Tue, 07 Apr 2009 17:33:49 +0000
Andrew Patterson <andrew.patterson@hp.com> wrote:

> On Tue, 2009-04-07 at 16:37 +0400, Alexander Beregalov wrote:
> > Fix this build error:
> > drivers/built-in.o: In function `pci_init_capabilities':
> > drivers/pci/probe.c:989: undefined reference to
> > `pcie_set_ecrc_checking' drivers/built-in.o: In function
> > `pci_setup': drivers/pci/pci.c:2547: undefined reference to
> > `pcie_ecrc_get_policy'
> > 
> > Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
> > ---
> > 
> >  drivers/pci/pci.c        |    2 ++
> >  drivers/pci/pcie/Kconfig |    2 +-
> >  drivers/pci/probe.c      |    2 ++
> >  3 files changed, 5 insertions(+), 1 deletions(-)
> > 
> > diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> > index f61b2cf..f1c393e 100644
> > --- a/drivers/pci/pci.c
> > +++ b/drivers/pci/pci.c
> > @@ -2543,8 +2543,10 @@ static int __init pci_setup(char *str)
> >  			} else if (!strncmp(str,
> > "resource_alignment=", 19)) { pci_set_resource_alignment_param(str
> > + 19, strlen(str + 19));
> > +#ifdef CONFIG_PCIE_ECRC
> >  			} else if (!strncmp(str, "ecrc=", 5)) {
> >  				pcie_ecrc_get_policy(str + 5);
> > +#endif
> >  			} else {
> >  				printk(KERN_ERR "PCI: Unknown
> > option `%s'\n", str);
> > diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig
> > index a79e52b..9d0e727 100644
> > --- a/drivers/pci/pcie/Kconfig
> > +++ b/drivers/pci/pcie/Kconfig
> > @@ -52,7 +52,7 @@ config PCIEASPM_DEBUG
> >  #
> >  config PCIE_ECRC
> >  	bool "PCI Express ECRC support"
> > -	depends on PCI
> > +	depends on PCI && PCIEPORTBUS
> 
> We really only need this.  There are empty functions in
> include/linux/pci.h to handle the case where PCIE_ECRC is not defined.
> The problem is that the code in drivers/pci/pcie is only compiled if
> PCIEPORTBUS is defined.  This feature does not depend on any
> PCIEPORTBUS code. So either ecrc.c needs to be moved to drivers/pci
> or we need to not assume that drivers/pci/pcie is only for the
> portbus driver.
> 

Btw I dropped this patch back out in light of Kenji-san's comments, so
I expect any subsequent version to include a fix for the build issue.

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center