2015-07-21 21:54:13

by Karicheri, Muralidharan

Subject: [Resend: PATCH] PCI: designware: fix the boot noise for missing *config* reg space

Currently on Keystone SoCs, boot up log shows an unnecessary boot
noise as follows:-

[ 0.365823] keystone-pcie 21021000.pcie: missing *config* reg space

Keystone uses older version of designware h/w that doesn't have ATU
support. So va_cfg0_base and va_cfg1_base are already set up in
ks_dw_pcie_host_init() before calling dw_pcie_host_init() and
they point to the remote config space address va (both same for Keystone).
So add a check to avoid this boot noise on Keystone.

Signed-off-by: Murali Karicheri <[email protected]>
---
- Resend with "PCI: designware" prefix in subject
drivers/pci/host/pcie-designware.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 69486be..b48b8a2 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -388,7 +388,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
addrp = of_get_address(np, index, NULL, NULL);
pp->cfg0_mod_base = of_read_number(addrp, ns);
pp->cfg1_mod_base = pp->cfg0_mod_base + pp->cfg0_size;
- } else {
+ } else if (!pp->va_cfg0_base) {
dev_err(pp->dev, "missing *config* reg space\n");
}

--
1.9.1

2015-07-30 15:50:57

by Karicheri, Muralidharan

Subject: Re: [Resend: PATCH] PCI: designware: fix the boot noise for missing *config* reg space

On 07/21/2015 05:54 PM, Murali Karicheri wrote:
> Currently on Keystone SoCs, boot up log shows an unnecessary boot
> noise as follows:-
>
> [ 0.365823] keystone-pcie 21021000.pcie: missing *config* reg space
>
> Keystone uses older version of designware h/w that doesn't have ATU
> support. So va_cfg0_base and va_cfg1_base are already set up in
> ks_dw_pcie_host_init() before calling dw_pcie_host_init() and
> they point to the remote config space address va (both same for Keystone).
> So add a check to avoid this boot noise on Keystone.
>
> Signed-off-by: Murali Karicheri <[email protected]>
> ---
> - Resend with "PCI: designware" prefix in subject
> drivers/pci/host/pcie-designware.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
> index 69486be..b48b8a2 100644
> --- a/drivers/pci/host/pcie-designware.c
> +++ b/drivers/pci/host/pcie-designware.c
> @@ -388,7 +388,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
> addrp = of_get_address(np, index, NULL, NULL);
> pp->cfg0_mod_base = of_read_number(addrp, ns);
> pp->cfg1_mod_base = pp->cfg0_mod_base + pp->cfg0_size;
> - } else {
> + } else if (!pp->va_cfg0_base) {
> dev_err(pp->dev, "missing *config* reg space\n");
> }
>
>
A gentle ping to review and apply this to pci next.

--
Murali Karicheri
Linux Kernel, Keystone

2015-07-31 08:18:59

by Jingoo Han

Subject: Re: [Resend: PATCH] PCI: designware: fix the boot noise for missing *config* reg space

On 2015. 7. 22., at AM 6:54, Murali Karicheri <[email protected]> wrote:
>
> Currently on Keystone SoCs, boot up log shows an unnecessary boot
> noise as follows:-
>
> [ 0.365823] keystone-pcie 21021000.pcie: missing *config* reg space
>
> Keystone uses older version of designware h/w that doesn't have ATU
> support. So va_cfg0_base and va_cfg1_base are already set up in
> ks_dw_pcie_host_init() before calling dw_pcie_host_init() and
> they point to the remote config space address va (both same for Keystone).
> So add a check to avoid this boot noise on Keystone.
>
> Signed-off-by: Murali Karicheri <[email protected]>

Acked-by: Jingoo Han <[email protected]>

Best regards,
Jingoo Han

> ---
> - Resend with "PCI: designware" prefix in subject
> drivers/pci/host/pcie-designware.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
> index 69486be..b48b8a2 100644
> --- a/drivers/pci/host/pcie-designware.c
> +++ b/drivers/pci/host/pcie-designware.c
> @@ -388,7 +388,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
> addrp = of_get_address(np, index, NULL, NULL);
> pp->cfg0_mod_base = of_read_number(addrp, ns);
> pp->cfg1_mod_base = pp->cfg0_mod_base + pp->cfg0_size;
> - } else {
> + } else if (!pp->va_cfg0_base) {
> dev_err(pp->dev, "missing *config* reg space\n");
> }
>
> --
> 1.9.1
>