* [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
@ 2013-09-17 20:11 Jason Gunthorpe
2013-10-01 16:44 ` Jason Cooper
0 siblings, 1 reply; 6+ messages in thread
From: Jason Gunthorpe @ 2013-09-17 20:11 UTC (permalink / raw)
To: linux-arm-kernel
If the property was not specified then then the returned resource
had a resource_size(..) == 1, rather than 0. The PCI-E driver checks
for 0 so it blindly continues on with a corrupted resource.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
---
drivers/bus/mvebu-mbus.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
- Revise the comment to clarify the code is setting resource_size(x)
to 0 [Thomas]
- Use -1 instead of -- for clarity
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 19ab6ff..8aa6cdd 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -861,11 +861,13 @@ static void __init mvebu_mbus_get_pcie_resources(struct device_node *np,
int ret;
/*
- * These are optional, so we clear them and they'll
- * be zero if they are missing from the DT.
+ * These are optional, so we make sure that resource_size(x) will
+ * return 0.
*/
memset(mem, 0, sizeof(struct resource));
+ mem->end = -1;
memset(io, 0, sizeof(struct resource));
+ io->end = -1;
ret = of_property_read_u32_array(np, "pcie-mem-aperture", reg, ARRAY_SIZE(reg));
if (!ret) {
--
1.8.1.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
2013-09-17 20:11 [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties Jason Gunthorpe
@ 2013-10-01 16:44 ` Jason Cooper
2013-10-01 16:50 ` Jason Gunthorpe
0 siblings, 1 reply; 6+ messages in thread
From: Jason Cooper @ 2013-10-01 16:44 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Sep 17, 2013 at 02:11:04PM -0600, Jason Gunthorpe wrote:
> If the property was not specified then then the returned resource
> had a resource_size(..) == 1, rather than 0. The PCI-E driver checks
> for 0 so it blindly continues on with a corrupted resource.
>
> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
> ---
> drivers/bus/mvebu-mbus.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
Applied to mvebu/drivers since you didn't mention a specific regression.
If there is one, please let me know shortly and I'll try to queue it up
for v3.12 instead.
thx,
Jason.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
2013-10-01 16:44 ` Jason Cooper
@ 2013-10-01 16:50 ` Jason Gunthorpe
2013-10-01 17:09 ` Jason Cooper
0 siblings, 1 reply; 6+ messages in thread
From: Jason Gunthorpe @ 2013-10-01 16:50 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Oct 01, 2013 at 12:44:09PM -0400, Jason Cooper wrote:
> On Tue, Sep 17, 2013 at 02:11:04PM -0600, Jason Gunthorpe wrote:
> > If the property was not specified then then the returned resource
> > had a resource_size(..) == 1, rather than 0. The PCI-E driver checks
> > for 0 so it blindly continues on with a corrupted resource.
> >
> > Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
> > drivers/bus/mvebu-mbus.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
>
> Applied to mvebu/drivers since you didn't mention a specific regression.
> If there is one, please let me know shortly and I'll try to queue it up
> for v3.12 instead.
If the DT is not formed exactly how the driver expects it goes
sideways. The kernel DT's are all OK.
Was the PCI driver new in 3.12?
If so it should probably be fixed in 3.12 as well, since this
sequence in the PCI driver:
mvebu_mbus_get_pcie_io_aperture(&pcie->io);
if (resource_size(&pcie->io) == 0) {
dev_err(&pdev->dev, "invalid I/O aperture size\n");
return -EINVAL;
}
Doesn't work.
This patch is a necessary precondition to applying:
https://github.com/jgunthorpe/linux/commit/ef90b0bf7d8552dc7dfaad82d964446f6a9b6a3b
PCI: mvebu - Support a bridge with no IO port window
Regards,
Jason
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
2013-10-01 16:50 ` Jason Gunthorpe
@ 2013-10-01 17:09 ` Jason Cooper
2013-10-01 17:22 ` Jason Gunthorpe
0 siblings, 1 reply; 6+ messages in thread
From: Jason Cooper @ 2013-10-01 17:09 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Oct 01, 2013 at 10:50:45AM -0600, Jason Gunthorpe wrote:
> On Tue, Oct 01, 2013 at 12:44:09PM -0400, Jason Cooper wrote:
> > On Tue, Sep 17, 2013 at 02:11:04PM -0600, Jason Gunthorpe wrote:
> > > If the property was not specified then then the returned resource
> > > had a resource_size(..) == 1, rather than 0. The PCI-E driver checks
> > > for 0 so it blindly continues on with a corrupted resource.
> > >
> > > Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
> > > drivers/bus/mvebu-mbus.c | 6 ++++--
> > > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > Applied to mvebu/drivers since you didn't mention a specific regression.
> > If there is one, please let me know shortly and I'll try to queue it up
> > for v3.12 instead.
>
> If the DT is not formed exactly how the driver expects it goes
> sideways. The kernel DT's are all OK.
>
> Was the PCI driver new in 3.12?
>
> If so it should probably be fixed in 3.12 as well, since this
> sequence in the PCI driver:
>
> mvebu_mbus_get_pcie_io_aperture(&pcie->io);
> if (resource_size(&pcie->io) == 0) {
> dev_err(&pdev->dev, "invalid I/O aperture size\n");
> return -EINVAL;
> }
>
> Doesn't work.
Ok, I've moved it over the mvebu/fixes and amended the commit as
follows:
"""
bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
If the property was not specified then the returned resource had a
resource_size(..) == 1, rather than 0. The PCI-E driver checks for 0 so it
blindly continues on with a corrupted resource.
The regression was introduced into v3.12 by:
11be654 PCI: mvebu: Adapt to the new device tree layout
"""
> This patch is a necessary precondition to applying:
>
> https://github.com/jgunthorpe/linux/commit/ef90b0bf7d8552dc7dfaad82d964446f6a9b6a3b
> PCI: mvebu - Support a bridge with no IO port window
I don't see this one in my stack, have you submitted it yet? When you
do, please add a note mentioning the dependency on this commit in
mvebu/fixes.
thx,
Jason.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
2013-10-01 17:09 ` Jason Cooper
@ 2013-10-01 17:22 ` Jason Gunthorpe
2013-10-01 17:28 ` Jason Cooper
0 siblings, 1 reply; 6+ messages in thread
From: Jason Gunthorpe @ 2013-10-01 17:22 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Oct 01, 2013 at 01:09:18PM -0400, Jason Cooper wrote:
> Ok, I've moved it over the mvebu/fixes and amended the commit as
> follows:
>
> """
> bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
>
> If the property was not specified then the returned resource had a
> resource_size(..) == 1, rather than 0. The PCI-E driver checks for 0 so it
> blindly continues on with a corrupted resource.
>
> The regression was introduced into v3.12 by:
>
> 11be654 PCI: mvebu: Adapt to the new device tree layout
>
> """
Reads fine to me, thanks
> > This patch is a necessary precondition to applying:
> >
> > https://github.com/jgunthorpe/linux/commit/ef90b0bf7d8552dc7dfaad82d964446f6a9b6a3b
> > PCI: mvebu - Support a bridge with no IO port window
>
> I don't see this one in my stack, have you submitted it yet? When you
> do, please add a note mentioning the dependency on this commit in
> mvebu/fixes.
Yes, I posted it along with the other PCI patches:
http://permalink.gmane.org/gmane.linux.kernel.pci/25498
Just so we are on the same page, these are the Kirkwood/mvebu patches
I was hoping to progress for 3.13:
https://github.com/jgunthorpe/linux/commit/9f20eec4696627afe87bf0f6a204909004062e8e
PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug
(Thomas soft ack'd this @ http://www.spinics.net/lists/linux-pci/msg25323.html)
https://github.com/jgunthorpe/linux/commit/ef90b0bf7d8552dc7dfaad82d964446f6a9b6a3b
PCI: mvebu - Support a bridge with no IO port window
(no comments)
And these which I think you have already taken:
ARM: kirkwood - Remove kirkwood_setup_wins and rely on the DT binding
ARM: kirkwood: Move the crypto node under the mbus node
ARM: kirkwood: Move the nand node under the mbus node
bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
Thanks,
Jason
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
2013-10-01 17:22 ` Jason Gunthorpe
@ 2013-10-01 17:28 ` Jason Cooper
0 siblings, 0 replies; 6+ messages in thread
From: Jason Cooper @ 2013-10-01 17:28 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Oct 01, 2013 at 11:22:59AM -0600, Jason Gunthorpe wrote:
> On Tue, Oct 01, 2013 at 01:09:18PM -0400, Jason Cooper wrote:
...
> > > This patch is a necessary precondition to applying:
> > >
> > > https://github.com/jgunthorpe/linux/commit/ef90b0bf7d8552dc7dfaad82d964446f6a9b6a3b
> > > PCI: mvebu - Support a bridge with no IO port window
> >
> > I don't see this one in my stack, have you submitted it yet? When you
> > do, please add a note mentioning the dependency on this commit in
> > mvebu/fixes.
>
> Yes, I posted it along with the other PCI patches:
>
> http://permalink.gmane.org/gmane.linux.kernel.pci/25498
>
> Just so we are on the same page, these are the Kirkwood/mvebu patches
> I was hoping to progress for 3.13:
>
> https://github.com/jgunthorpe/linux/commit/9f20eec4696627afe87bf0f6a204909004062e8e
> PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug
> (Thomas soft ack'd this @ http://www.spinics.net/lists/linux-pci/msg25323.html)
>
> https://github.com/jgunthorpe/linux/commit/ef90b0bf7d8552dc7dfaad82d964446f6a9b6a3b
> PCI: mvebu - Support a bridge with no IO port window
> (no comments)
Could you resend the above patches to me?
thx,
Jason.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-10-01 17:28 UTC | newest]
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2013-09-17 20:11 [PATCH v2] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties Jason Gunthorpe
2013-10-01 16:44 ` Jason Cooper
2013-10-01 16:50 ` Jason Gunthorpe
2013-10-01 17:09 ` Jason Cooper
2013-10-01 17:22 ` Jason Gunthorpe
2013-10-01 17:28 ` Jason Cooper
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