linux-kernel - [PATCH v1 2/2] PCI: Correct PCI_STD_RESOURCE

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Message-ID: <20170519195855.25440.29969.stgit@bhelgaas-glaptop.roam.corp.google.com>
Date:   Fri, 19 May 2017 14:58:55 -0500
From:   Bjorn Helgaas <bhelgaas@...gle.com>
To:     linux-pci@...r.kernel.org
Cc:     Douglas Lehr <dllehr@...ibm.com>,
        Milton Miller <miltonm@...ibm.com>,
        Anton Blanchard <anton@...ba.org>,
        linux-kernel@...r.kernel.org,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>
Subject: [PATCH v1 2/2] PCI: Correct PCI_STD_RESOURCE_END usage

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>
---
 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 085fb787aa9e..16e6cd86ad71 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) {