From 53e4d30dd666d7f83598957ee4a415eefb47c9a6 Mon Sep 17 00:00:00 2001 From: Rajesh Shah Date: Wed, 3 May 2006 15:27:47 -0700 Subject: [PATCH] PCI: i386/x86_84: disable PCI resource decode on device disable When a PCI device is disabled via pci_disable_device(), it's still left decoding its BAR resource ranges even though its driver will have likely released those regions (and may even have unloaded). pci_enable_device() already explicitly enables BAR resource decode for the device being enabled. This patch disables resource decode for the PCI device being disabled, making it symmetric with the enable call. I saw this while doing something else, not because of a problem report. Still, seems to be the correct thing to do. Signed-off-by: Rajesh Shah Signed-off-by: Greg Kroah-Hartman --- arch/i386/pci/i386.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/i386/pci/i386.c') diff --git a/arch/i386/pci/i386.c b/arch/i386/pci/i386.c index ed2c8c899bd3..7852827a599b 100644 --- a/arch/i386/pci/i386.c +++ b/arch/i386/pci/i386.c @@ -242,6 +242,15 @@ int pcibios_enable_resources(struct pci_dev *dev, int mask) return 0; } +void pcibios_disable_resources(struct pci_dev *dev) +{ + u16 cmd; + + pci_read_config_word(dev, PCI_COMMAND, &cmd); + cmd &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY); + pci_write_config_word(dev, PCI_COMMAND, cmd); +} + /* * If we set up a device for bus mastering, we need to check the latency * timer as certain crappy BIOSes forget to set it properly. -- cgit v1.2.2