From: Jiang Liu <jiang.liu@linux.intel.com>
To: "Joerg Roedel" <joro@8bytes.org>,
"Borislav Petkov" <bp@alien8.de>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Alex Deucher" <alexdeucher@gmail.com>,
"Christian König" <christian.koenig@amd.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-iommu@vger.kernel.org, linux-acpi@vger.kernel.org,
x86@kernel.org
Subject: [Bugfix v4 2/2] ACPI, PCI: Prevent binding other PCI drivers to IOAPIC PCI devices
Date: Fri, 9 Oct 2015 22:07:32 +0800 [thread overview]
Message-ID: <1444399652-25920-3-git-send-email-jiang.liu@linux.intel.com> (raw)
In-Reply-To: <1444399652-25920-1-git-send-email-jiang.liu@linux.intel.com>
The ACPI IOAPIC driver makes use of IOAPIC PCI devices, so prevent
binding other PCI drivers to IOAPIC PCI devices used by ACPI IOAPIC
driver.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
---
drivers/acpi/ioapic.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
index ccdc8db16bb8..da71b274fc21 100644
--- a/drivers/acpi/ioapic.c
+++ b/drivers/acpi/ioapic.c
@@ -162,12 +162,14 @@ done:
list_add(&ioapic->list, &ioapic_list);
mutex_unlock(&ioapic_list_lock);
- if (dev)
+ if (dev) {
+ dev->match_driver = false;
dev_info(&dev->dev, "%s at %pR, GSI %u\n",
type, res, (u32)gsi_base);
- else
+ } else {
acpi_handle_info(handle, "%s at %pR, GSI %u\n",
type, res, (u32)gsi_base);
+ }
return AE_OK;
@@ -216,6 +218,7 @@ int acpi_ioapic_remove(struct acpi_pci_root *root)
if (ioapic->pdev) {
pci_release_region(ioapic->pdev, 0);
pci_disable_device(ioapic->pdev);
+ ioapic->pdev->match_driver = true;
pci_dev_put(ioapic->pdev);
} else if (ioapic->res.flags && ioapic->res.parent) {
release_resource(&ioapic->res);
--
1.7.10.4
next prev parent reply other threads:[~2015-10-09 14:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-09 10:23 [PATCH] x86/PCI: Don't alloc pcibios-irq when MSI is enabled Joerg Roedel
2015-10-09 10:26 ` Thomas Gleixner
2015-10-09 14:07 ` [Bugfix v4 0/2] Prevent binding PCI drivers to PCI devices used by non-pci drivers Jiang Liu
2015-10-09 14:07 ` [Bugfix v4 1/2] iommu/amd: Prevent binding other PCI drivers to IOMMU PCI devices Jiang Liu
2015-10-09 15:56 ` Joerg Roedel
2015-10-09 14:07 ` Jiang Liu [this message]
2015-10-09 15:45 ` [Bugfix v4 2/2] ACPI, PCI: Prevent binding other PCI drivers to IOAPIC " Joerg Roedel
2015-10-21 16:23 ` [PATCH] x86/PCI: Don't alloc pcibios-irq when MSI is enabled Bjorn Helgaas
2015-10-23 2:02 ` Jiang Liu
2015-10-23 8:23 ` Joerg Roedel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1444399652-25920-3-git-send-email-jiang.liu@linux.intel.com \
--to=jiang.liu@linux.intel.com \
--cc=alexdeucher@gmail.com \
--cc=bhelgaas@google.com \
--cc=bp@alien8.de \
--cc=christian.koenig@amd.com \
--cc=daniel@ffwll.ch \
--cc=joro@8bytes.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-iommu@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).