linux-kernel - [PATCH AUTOSEL for 4.4 028/162] PCI: Correct PCI_STD_RESOURCE

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Message-ID: <20180409002738.163941-28-alexander.levin@microsoft.com>
Date:   Mon, 9 Apr 2018 00:28:03 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.4 028/162] PCI: Correct PCI_STD_RESOURCE_END
 usage

From: Bjorn Helgaas <bhelgaas@...gle.com>

[ Upstream commit 2f686f1d9beee135de6d08caea707ec7bfc916d4 ]

PCI_STD_RESOURCE_END is (confusingly) the index of the last valid BAR, not
the *number* of BARs.  To iterate through all possible BARs, we need to
include PCI_STD_RESOURCE_END.

Fixes: 9fe373f9997b ("PCI: Increase IBM ipr SAS Crocodile BARs to at least system page size")
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/pci/quirks.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4eb1cf0ed00c..ae6aa7b385c2 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -304,7 +304,7 @@ static void quirk_extend_bar_to_page(struct pci_dev *dev)
 {
 	int i;
 
-	for (i = 0; i < PCI_STD_RESOURCE_END; i++) {
+	for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
 		struct resource *r = &dev->resource[i];
 
 		if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
-- 
2.15.1