2009-04-07 12:37:37

by Alexander Beregalov

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

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 <[email protected]>
---

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)


2009-04-07 14:33:19

by Matthew Wilcox

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

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."

2009-04-07 14:42:20

by Alexander Beregalov

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

2009/4/7 Matthew Wilcox <[email protected]>:
> 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.

2009-04-07 17:34:14

by Andrew Patterson

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

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 <[email protected]>
> ---
>
> 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

2009-04-07 21:52:24

by Jesse Barnes

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

On Tue, 07 Apr 2009 17:33:49 +0000
Andrew Patterson <[email protected]> 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 <[email protected]>
> > ---
> >
> > 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