diff mbox

PCI: designware: Fix IO resource end address calculation

Message ID 1411482540-31297-2-git-send-email-Minghuan.Lian@freescale.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Minghuan Lian Sept. 23, 2014, 2:28 p.m. UTC
End address should be equal to start_addr + size - 1.
The patch fixes PCI IO resource end address calculation.

Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
---
 drivers/pci/host/pcie-designware.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Bjorn Helgaas Sept. 23, 2014, 10:53 p.m. UTC | #1
[+cc Mohit, Jingoo]

On Tue, Sep 23, 2014 at 10:28:57PM +0800, Minghuan Lian wrote:
> End address should be equal to start_addr + size - 1.
> The patch fixes PCI IO resource end address calculation.
> 
> Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
> ---
>  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 0f3cb2a..c19184f7 100644
> --- a/drivers/pci/host/pcie-designware.c
> +++ b/drivers/pci/host/pcie-designware.c
> @@ -459,7 +459,7 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
>  			pp->io.end = min_t(resource_size_t,
>  					   IO_SPACE_LIMIT,
>  					   range.pci_addr + range.size
> -					   + global_io_offset);
> +					   + global_io_offset - 1);
>  			pp->io_size = resource_size(&pp->io);
>  			pp->io_bus_addr = range.pci_addr;
>  			pp->io_base = range.cpu_addr;
> -- 
> 1.9.1
> 
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Mohit KUMAR DCG Sept. 24, 2014, 4:14 a.m. UTC | #2
> -----Original Message-----
> From: Bjorn Helgaas [mailto:bhelgaas@google.com]
> Sent: Wednesday, September 24, 2014 4:24 AM
> To: Minghuan Lian
> Cc: linux-pci@vger.kernel.org; linux-arm-kernel@lists.infradead.org; Zang
> Roy-R61911; Hu Mingkai-B21284; Scott Wood; Yoder Stuart-B08248; Arnd
> Bergmann; Mohit KUMAR DCG; Jingoo Han
> Subject: Re: [PATCH] PCI: designware: Fix IO resource end address
> calculation
> 
> [+cc Mohit, Jingoo]
> 
> On Tue, Sep 23, 2014 at 10:28:57PM +0800, Minghuan Lian wrote:
> > End address should be equal to start_addr + size - 1.
> > The patch fixes PCI IO resource end address calculation.
> >
> > Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
> > ---
> >  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 0f3cb2a..c19184f7 100644
> > --- a/drivers/pci/host/pcie-designware.c
> > +++ b/drivers/pci/host/pcie-designware.c
> > @@ -459,7 +459,7 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
> >  			pp->io.end = min_t(resource_size_t,
> >  					   IO_SPACE_LIMIT,
> >  					   range.pci_addr + range.size
> > -					   + global_io_offset);
> > +					   + global_io_offset - 1);
> >  			pp->io_size = resource_size(&pp->io);
> >  			pp->io_bus_addr = range.pci_addr;
> >  			pp->io_base = range.cpu_addr;
> > --
> > 1.9.1
> >
- Acked-by: Mohit KUMAR <mohit.kumar@st.com>

Thanks
Mohit
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Bjorn Helgaas Sept. 24, 2014, 1:26 p.m. UTC | #3
On Tue, Sep 23, 2014 at 10:28:57PM +0800, Minghuan Lian wrote:
> End address should be equal to start_addr + size - 1.
> The patch fixes PCI IO resource end address calculation.
> 
> Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>

Applied to pci/host-designware with Mohit's ack for v3.18, thanks!

> ---
>  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 0f3cb2a..c19184f7 100644
> --- a/drivers/pci/host/pcie-designware.c
> +++ b/drivers/pci/host/pcie-designware.c
> @@ -459,7 +459,7 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
>  			pp->io.end = min_t(resource_size_t,
>  					   IO_SPACE_LIMIT,
>  					   range.pci_addr + range.size
> -					   + global_io_offset);
> +					   + global_io_offset - 1);
>  			pp->io_size = resource_size(&pp->io);
>  			pp->io_bus_addr = range.pci_addr;
>  			pp->io_base = range.cpu_addr;
> -- 
> 1.9.1
> 
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diff mbox

Patch

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 0f3cb2a..c19184f7 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -459,7 +459,7 @@  int __init dw_pcie_host_init(struct pcie_port *pp)
 			pp->io.end = min_t(resource_size_t,
 					   IO_SPACE_LIMIT,
 					   range.pci_addr + range.size
-					   + global_io_offset);
+					   + global_io_offset - 1);
 			pp->io_size = resource_size(&pp->io);
 			pp->io_bus_addr = range.pci_addr;
 			pp->io_base = range.cpu_addr;