linux-kernel - [PATCH v2] ata: pata_macio: Fix PCI region leak

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Message-ID: <20250610135413.35930-2-phasta@kernel.org>
Date: Tue, 10 Jun 2025 15:54:14 +0200
From: Philipp Stanner <phasta@...nel.org>
To: Damien Le Moal <dlemoal@...nel.org>,
	Niklas Cassel <cassel@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Philipp Stanner <phasta@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc: linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] ata: pata_macio: Fix PCI region leak

pci_request_regions() became a managed devres functions if the PCI
device was enabled with pcim_enable_device(), which is the case for
pata_macio.

The PCI subsystem recently removed this hybrid feature from
pci_request_region(). When doing so, pata_macio was forgotten to be
ported to use pcim_request_all_regions(). If that function is not used,
pata_macio will fail on driver-reload because the PCI regions will
remain blocked.

Fix the region leak by replacing pci_request_regions() with its managed
counterpart, pcim_request_all_regions().

Fixes: 51f6aec99cb0 ("PCI: Remove hybrid devres nature from request functions")
Signed-off-by: Philipp Stanner <phasta@...nel.org>
---
Changes in v2:
  - Add Fixes: tag and rephrase commit message, since the merge window
    closed already. (Niklas)
---
 drivers/ata/pata_macio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index fbf5f07ea357..f7a933eefe05 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -1298,7 +1298,7 @@ static int pata_macio_pci_attach(struct pci_dev *pdev,
 	priv->dev = &pdev->dev;
 
 	/* Get MMIO regions */
-	if (pci_request_regions(pdev, "pata-macio")) {
+	if (pcim_request_all_regions(pdev, "pata-macio")) {
 		dev_err(&pdev->dev,
 			"Cannot obtain PCI resources\n");
 		return -EBUSY;
-- 
2.49.0