linux-kernel - [PATCH 2/3] PCI: Cleanup early_dump_pci

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Message-Id: <20250610105820.7126-2-ilpo.jarvinen@linux.intel.com>
Date: Tue, 10 Jun 2025 13:58:19 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Krzysztof Wilczyński <kw@...ux.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 2/3] PCI: Cleanup early_dump_pci_device()

Convert 256 to PCI_CFG_SPACE_SIZE and 4 to sizeof(u32) and
avoid i / 4 construct by changing the iteration.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 drivers/pci/probe.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index c00634e5a2ed..f08e754c404b 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -3,6 +3,7 @@
  * PCI detection and setup code
  */
 
+#include <linux/array_size.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/init.h>
@@ -1912,16 +1913,16 @@ static int pci_intx_mask_broken(struct pci_dev *dev)
 
 static void early_dump_pci_device(struct pci_dev *pdev)
 {
-	u32 value[256 / 4];
+	u32 value[PCI_CFG_SPACE_SIZE / sizeof(u32)];
 	int i;
 
 	pci_info(pdev, "config space:\n");
 
-	for (i = 0; i < 256; i += 4)
-		pci_read_config_dword(pdev, i, &value[i / 4]);
+	for (i = 0; i < ARRAY_SIZE(value); i++)
+		pci_read_config_dword(pdev, i * sizeof(u32), &value[i]);
 
 	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
-		       value, 256, false);
+		       value, ARRAY_SIZE(value) * sizeof(u32), false);
 }
 
 static const char *pci_type_str(struct pci_dev *dev)
-- 
2.39.5