From: Bjorn Helgaas <bhelgaas@google.com>
Date: Fri, 19 May 2017 19:37:53 +0000 (-0500)
Subject: efi/fb: Correct PCI_STD_RESOURCE_END usage
X-Git-Tag: v4.13-rc1~88^2~22^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=92a16c86299c64f58f320e491977408ba31b8c3c;p=karo-tx-linux.git

efi/fb: 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: 55d728a40d36 ("efi/fb: Avoid reconfiguration of BAR that covers the framebuffer")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---

diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index b827a8113e26..ff01bed7112f 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -408,7 +408,7 @@ static void efifb_fixup_resources(struct pci_dev *dev)
 	if (!base)
 		return;
 
-	for (i = 0; i < PCI_STD_RESOURCE_END; i++) {
+	for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
 		struct resource *res = &dev->resource[i];
 
 		if (!(res->flags & IORESOURCE_MEM))