take2: [Patch 1/3] Updated patches for PCI IRQ deallocation support

From: Kenji Kaneshige <kaneshige.kenji_at_jp.fujitsu.com>
Date: 2004-10-04 20:17:35

This is a patch for PCI code that has no dependencies.
Please note that this patch has been already included in 2.6.9-rc3-mm1.

Please apply.

Kenji Kaneshige

Name:		add_pcibios_disable_device_hook.patch
Kernel Version:	2.6.9-rc3
Depends:	none
Note:		This patch is already included in 2.6.9-rc3-mm1.
Change Log:

    - Ported to 2.6.9-rc3

    - Chaged to use __attrubute__ ((weak)) instead of modifying all
      arch specific code.


This patch adds a hook 'pcibios_disable_device()' into
pci_disable_device() to call architecture specific PCI resource
deallocation code. It's a opposite part of pcibios_enable_device().
We need this hook to deallocate architecture specific PCI resource
such as IRQ resource, etc.. This patch is just for adding the hook, so
'pcibios_disable_device()' is defined as a null function on all
architecture so far.

I tested this patch on i386, x86_64 and ia64. But it has not been
tested on other architectures because I don't have these machines.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>


 linux-2.6.9-rc3-kanesige/drivers/pci/pci.c |   12 ++++++++++++
 1 files changed, 12 insertions(+)

diff -puN drivers/pci/pci.c~add_pcibios_disable_device_hook drivers/pci/pci.c
--- linux-2.6.9-rc3/drivers/pci/pci.c~add_pcibios_disable_device_hook	2004-10-04 17:01:59.329143129 +0900
+++ linux-2.6.9-rc3-kanesige/drivers/pci/pci.c	2004-10-04 17:01:59.332072838 +0900
@@ -387,6 +387,16 @@ pci_enable_device(struct pci_dev *dev)
+ * pcibios_disable_device - disable arch specific PCI resources for device dev
+ * @dev: the PCI device to disable
+ *
+ * Disables architecture specific PCI resources for the device. This
+ * is the default implementation. Architecture implementations can
+ * override this.
+ */
+void __attribute__ ((weak)) pcibios_disable_device (struct pci_dev *dev) {}
  * pci_disable_device - Disable PCI device after use
  * @dev: PCI device to be disabled
@@ -406,6 +416,8 @@ pci_disable_device(struct pci_dev *dev)
 		pci_command &= ~PCI_COMMAND_MASTER;
 		pci_write_config_word(dev, PCI_COMMAND, pci_command);
+	pcibios_disable_device(dev);


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Received on Mon Oct 4 06:21:48 2004

This archive was generated by hypermail 2.1.8 : 2005-08-02 09:20:31 EST