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From: Yu Zhao <yu.zhao@intel.com>
To: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Cc: "achiang@hp.com" <achiang@hp.com>,
	"grundler@parisc-linux.org" <grundler@parisc-linux.org>,
	"greg@kroah.com" <greg@kroah.com>,
	"mingo@elte.hu" <mingo@elte.hu>,
	"jbarnes@virtuousgeek.org" <jbarnes@virtuousgeek.org>,
	"matthew@wil.cx" <matthew@wil.cx>,
	"randy.dunlap@oracle.com" <randy.dunlap@oracle.com>,
	"rdreier@cisco.com" <rdreier@cisco.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"virtualization@lists.linux-foundation.org" 
	<virtualization@lists.linux-foundation.org>
Subject: [PATCH 7/16 v6] PCI: cleanup pcibios_allocate_resources()
Date: Wed, 22 Oct 2008 16:42:41 +0800	[thread overview]
Message-ID: <20081022084241.GG3773@yzhao12-linux.sh.intel.com> (raw)
In-Reply-To: <20081022083809.GA3757@yzhao12-linux.sh.intel.com>

This cleanup makes pcibios_allocate_resources() easier to read.

Cc: Alex Chiang <achiang@hp.com>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>

---
 arch/x86/pci/i386.c |   28 ++++++++++++++--------------
 1 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 844df0c..8729bde 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -147,7 +147,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
 static void __init pcibios_allocate_resources(int pass)
 {
 	struct pci_dev *dev = NULL;
-	int idx, disabled;
+	int idx, enabled;
 	u16 command;
 	struct resource *r, *pr;
 
@@ -160,22 +160,22 @@ static void __init pcibios_allocate_resources(int pass)
 			if (!r->start)		/* Address not assigned at all */
 				continue;
 			if (r->flags & IORESOURCE_IO)
-				disabled = !(command & PCI_COMMAND_IO);
+				enabled = command & PCI_COMMAND_IO;
 			else
-				disabled = !(command & PCI_COMMAND_MEMORY);
-			if (pass == disabled) {
-				dev_dbg(&dev->dev, "resource %#08llx-%#08llx (f=%lx, d=%d, p=%d)\n",
+				enabled = command & PCI_COMMAND_MEMORY;
+			if (pass == enabled)
+				continue;
+			dev_dbg(&dev->dev, "resource %#08llx-%#08llx (f=%lx, d=%d, p=%d)\n",
 					(unsigned long long) r->start,
 					(unsigned long long) r->end,
-					r->flags, disabled, pass);
-				pr = pci_find_parent_resource(dev, r);
-				if (!pr || request_resource(pr, r) < 0) {
-					dev_err(&dev->dev, "BAR %d: can't allocate resource\n", idx);
-					/* We'll assign a new address later */
-					r->end -= r->start;
-					r->start = 0;
-				}
-			}
+					r->flags, enabled, pass);
+			pr = pci_find_parent_resource(dev, r);
+			if (pr && !request_resource(pr, r))
+				continue;
+			dev_err(&dev->dev, "BAR %d: can't allocate resource\n", idx);
+			/* We'll assign a new address later */
+			r->end -= r->start;
+			r->start = 0;
 		}
 		if (!pass) {
 			r = &dev->resource[PCI_ROM_RESOURCE];
-- 
1.5.6.4


  parent reply	other threads:[~2008-10-22  9:39 UTC|newest]

Thread overview: 118+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-22  8:38 [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support Yu Zhao
2008-10-22  8:40 ` [PATCH 1/16 v6] PCI: remove unnecessary arg of pci_update_resource() Yu Zhao
2008-10-22  8:40 ` [PATCH 2/16 v6] PCI: define PCI resource names in an 'enum' Yu Zhao
2008-10-22 14:24   ` Bjorn Helgaas
2008-10-22 14:44     ` Yu Zhao
2008-10-22 14:51       ` Bjorn Helgaas
2008-10-22 14:53         ` Yu Zhao
2008-11-14  0:43   ` Simon Horman
2008-10-22  8:41 ` [PATCH 3/16 v6] PCI: export __pci_read_base Yu Zhao
2008-10-22  8:41 ` [PATCH 4/16 v6] PCI: make pci_alloc_child_bus() be able to handle NULL bridge Yu Zhao
2008-10-22  8:41 ` [PATCH 5/16 v6] PCI: add a wrapper for resource_alignment() Yu Zhao
2008-10-22  8:42 ` [PATCH 6/16 v6] PCI: add a new function to map BAR offset Yu Zhao
2008-10-22  8:42 ` Yu Zhao [this message]
2008-10-23  7:10   ` [PATCH 7/16 v6] PCI: cleanup pcibios_allocate_resources() Yinghai Lu
2008-10-23  6:50     ` Yu Zhao
2008-10-22  8:43 ` [PATCH 8/16 v6] PCI: add boot options to reassign resources Yu Zhao
2008-10-22 14:35   ` Bjorn Helgaas
2008-10-22 14:49     ` Yu Zhao
2008-10-22  8:43 ` [PATCH 9/16 v6] PCI: add boot option to align MMIO resources Yu Zhao
2008-10-22 14:34   ` Bjorn Helgaas
2008-10-22 14:52     ` Yu Zhao
2008-10-22  8:43 ` [PATCH 10/16 v6] PCI: cleanup pci_bus_add_devices() Yu Zhao
2008-10-22  8:44 ` [PATCH 11/16 v6] PCI: split a new function from pci_bus_add_devices() Yu Zhao
2008-10-22  8:44 ` [PATCH 12/16 v6] PCI: support the SR-IOV capability Yu Zhao
2008-10-22  8:44 ` [PATCH 13/16 v6] PCI: reserve bus range for SR-IOV device Yu Zhao
2008-10-22  8:45 ` [PATCH 14/16 v6] PCI: document for SR-IOV user and developer Yu Zhao
2008-10-22  8:45 ` [PATCH 15/16 v6] PCI: document the SR-IOV sysfs entries Yu Zhao
2008-11-06  4:33   ` Greg KH
2008-11-06  4:46     ` Greg KH
2008-11-07  3:01       ` Zhao, Yu
2008-11-07  3:18         ` Greg KH
2008-11-13  6:50           ` Yu Zhao
2008-11-14  0:55             ` Greg KH
2008-11-17  8:09               ` Yu Zhao
2008-11-18 15:05                 ` Greg KH
2008-11-18 16:49                 ` Kay Sievers
2008-10-22  8:45 ` [PATCH 16/16 v6] PCI: document the new PCI boot parameters Yu Zhao
2008-10-22 14:27   ` Bjorn Helgaas
2008-10-22 17:01     ` Randy Dunlap
2008-11-06  4:32   ` Greg KH
2008-11-07  2:37     ` Zhao, Yu
2008-11-07  2:50       ` Greg KH
2008-11-07  3:40         ` Zhao, Yu
2008-11-07  4:17           ` Matthew Wilcox
2008-12-11  1:43             ` Yu Zhao
2008-12-11  4:33               ` Grant Grundler
2008-12-11 15:39                 ` H L
2008-11-07  6:16           ` Greg KH
2008-11-07  7:50             ` Zhao, Yu
2008-11-07  8:02               ` Greg KH
2008-11-07  8:17                 ` Zhao, Yu
2008-11-07  8:24                   ` Greg KH
2008-11-07  8:35                     ` Zhao, Yu
2008-11-07 18:53                       ` Greg KH
2008-11-08  5:00                         ` Yu Zhao
2008-11-08  5:25                           ` Greg KH
2008-11-08  6:05                             ` Yu Zhao
     [not found]                           ` <fe8256d20811072150o1d82e8bdq40bf61df0a3faebe@mail.gmail.com>
2008-11-08  5:54                             ` Greg KH
2008-11-09 14:19             ` Pavel Machek
2008-11-09 14:34               ` Alexander Graf
2008-11-06  4:48 ` [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support Greg KH
2008-11-06 15:40   ` H L
2008-11-06 15:43     ` Greg KH
2008-11-06 16:41       ` H L
2008-11-06 16:49         ` Greg KH
2008-11-06 17:38           ` Fischer, Anna
2008-11-06 18:03             ` Greg KH
2008-11-06 20:04               ` Fischer, Anna
2008-11-09 12:44               ` Avi Kivity
2008-11-09 19:25                 ` Greg KH
2008-11-09 19:37                   ` Avi Kivity
2008-11-11  6:08                     ` Greg KH
2008-11-11  9:00                       ` Avi Kivity
2008-11-06 18:36             ` Matthew Wilcox
2008-11-06 22:38               ` Anthony Liguori
2008-11-06 22:58                 ` Matthew Wilcox
2008-11-07  6:19                   ` Greg KH
2008-11-07 15:17                     ` Yu Zhao
2008-11-07 18:48                       ` Greg KH
2008-11-08 11:09                         ` Fischer, Anna
2008-11-08 15:37                           ` Leonid Grossman
2008-11-13  7:49                         ` Yu Zhao
2008-11-09 12:47                   ` Avi Kivity
2008-11-07  1:52                 ` Dong, Eddie
2008-11-07  2:08                 ` Nakajima, Jun
2008-11-07 15:21                 ` Andi Kleen
2008-11-09 12:53                   ` Avi Kivity
2008-11-07 16:01                 ` Yu Zhao
     [not found]                 ` <87d4h7pnnm.fsf__4937.77150190926$1226071173$gmane$org@basil.nowhere.org>
2008-11-12 22:41                   ` Anthony Liguori
2008-11-16 16:04                     ` Avi Kivity
2008-11-17  1:46                       ` Zhao, Yu
2008-11-06 17:47           ` Matthew Wilcox
2008-11-06 17:53             ` Greg KH
2008-11-06 22:24               ` Simon Horman
2008-11-06 22:40               ` Anthony Liguori
2008-11-07  6:17                 ` Greg KH
2008-11-07  7:47                   ` Zhao, Yu
     [not found]                     ` <200811111048.45242.rusty@rustcorp.com.au>
2008-11-17 12:01                       ` Yu Zhao
2008-11-09 12:58                   ` Avi Kivity
2008-11-09  6:41                 ` Muli Ben-Yehuda
2008-11-09 13:03                   ` Avi Kivity
2008-11-06 23:54               ` Chris Wright
2008-11-07  6:10                 ` Greg KH
2008-11-07  7:06                 ` Zhao, Yu
2008-11-07  7:29                   ` Leonid Grossman
2008-11-06 18:05           ` H L
2008-11-06 18:24             ` Greg KH
2008-11-06 21:35               ` Fischer, Anna
2008-11-07  6:18                 ` Greg KH
2008-11-07  6:03               ` Zhao, Yu
2008-11-06 16:51       ` git repository for SR-IOV development? H L
2008-11-06 16:59         ` Greg KH
2008-11-06 19:58           ` H L
2008-11-06 22:56             ` Simon Horman
2008-11-07  1:58             ` Greg KH
2008-11-07 13:09               ` Yu Zhao
2008-11-07  5:18   ` [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support Zhao, Yu
2008-11-07  6:07     ` Greg KH

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