[PATCH] PCI: 'is_enabled' flag should be set/cleared when the device is actually enabled/disabled

[Greg KH]

[PATCH] PCI: 'is_enabled' flag should be set/cleared when the device is actually enabled/disabled

I think 'is_enabled' flag in pci_dev structure should be set/cleared
when the device actually enabled/disabled. Especially about
pci_enable_device(), it can be failed. By this change, we will also
get the possibility of refering 'is_enabled' flag from the functions
called through pci_enable_device()/pci_disable_device().

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
commit ceb43744cd48a20212e2179e0c7ff2f450a3c97e
tree f9554643bc9d70fe761840a603adce393c0e9f08
parent 8800cea62025a5209d110c5fa5990429239d6eee
author Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxxxx> 1112939611 +0900
committer Greg KH <gregkh@xxxxxxx> 1115189113 -0700

Index: drivers/pci/pci.c
===================================================================
--- 2aa9e4732d7014dcda4c0e80d2e377f52e2262e9/drivers/pci/pci.c  (mode:100644 sha1:bfbff83352688dc99776706033e1bb80b8282946)
+++ f9554643bc9d70fe761840a603adce393c0e9f08/drivers/pci/pci.c  (mode:100644 sha1:fc8cc6c53778b6336e26ef23b1ac3e78eb16c7a2)
@@ -398,10 +398,10 @@
 {
 	int err;
 
-	dev->is_enabled = 1;
 	if ((err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1)))
 		return err;
 	pci_fixup_device(pci_fixup_enable, dev);
+	dev->is_enabled = 1;
 	return 0;
 }
 
@@ -427,16 +427,15 @@
 {
 	u16 pci_command;
 	
-	dev->is_enabled = 0;
-	dev->is_busmaster = 0;
-
 	pci_read_config_word(dev, PCI_COMMAND, &pci_command);
 	if (pci_command & PCI_COMMAND_MASTER) {
 		pci_command &= ~PCI_COMMAND_MASTER;
 		pci_write_config_word(dev, PCI_COMMAND, pci_command);
 	}
+	dev->is_busmaster = 0;
 
 	pcibios_disable_device(dev);
+	dev->is_enabled = 0;
 }
 
 /**

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/