linux-kernel - [PATCH v3 15/26] efifb: Loop using PCI_STD_NUM

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Message-Id: <20190916204158.6889-16-efremov@linux.com>
Date:   Mon, 16 Sep 2019 23:41:47 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Denis Efremov <efremov@...ux.com>, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, Andrew Murray <andrew.murray@....com>,
        linux-fbdev@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Peter Jones <pjones@...hat.com>
Subject: [PATCH v3 15/26] efifb: Loop using PCI_STD_NUM_BARS

Refactor loops to use idiomatic C style and avoid the fencepost error
of using "i < PCI_STD_RESOURCE_END" when "i <= PCI_STD_RESOURCE_END"
is required, e.g., commit 2f686f1d9bee ("PCI: Correct PCI_STD_RESOURCE_END
usage").

To iterate through all possible BARs, loop conditions changed to the
*number* of BARs "i < PCI_STD_NUM_BARS", instead of the index of the last
valid BAR "i <= PCI_STD_RESOURCE_END".

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc: Peter Jones <pjones@...hat.com>
Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 drivers/video/fbdev/efifb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 04a22663b4fb..6c72b825e92a 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -668,7 +668,7 @@ 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_NUM_BARS; i++) {
 		struct resource *res = &dev->resource[i];
 
 		if (!(res->flags & IORESOURCE_MEM))
-- 
2.21.0