linux-kernel - [PATCH] mtd: rawnand: Use non-hybrid PCI devres API

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20250417093428.28571-2-phasta@kernel.org>
Date: Thu, 17 Apr 2025 11:34:29 +0200
From: Philipp Stanner <phasta@...nel.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Philipp Stanner <phasta@...nel.org>,
	Chen Ridong <chenridong@...wei.com>
Cc: linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mtd: rawnand: Use non-hybrid PCI devres API

denali_pci.c enables a PCI device with pcim_enable_device(). This,
implicitly, switches the function pci_request_regions() into managed
mode, where it becomes a devres function.

The PCI subsystem wants to remove this hybrid nature from its
interfaces. To do so, users of the aforementioned combination of
functions must be ported to non-hybrid functions.

Moreover, since both functions are already managed in this driver, the
calls to pci_release_regions() are unnecessary.

Remove the calls to pci_release_regions().

Replace the call to sometimes-managed pci_request_regions() with one to
the always-managed pcim_request_regions().

Signed-off-by: Philipp Stanner <phasta@...nel.org>
---
 drivers/mtd/nand/raw/denali_pci.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/mtd/nand/raw/denali_pci.c b/drivers/mtd/nand/raw/denali_pci.c
index e22094e39546..97fa32d73441 100644
--- a/drivers/mtd/nand/raw/denali_pci.c
+++ b/drivers/mtd/nand/raw/denali_pci.c
@@ -68,7 +68,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	denali->clk_rate = 50000000;		/* 50 MHz */
 	denali->clk_x_rate = 200000000;		/* 200 MHz */
 
-	ret = pci_request_regions(dev, DENALI_NAND_NAME);
+	ret = pcim_request_all_regions(dev, DENALI_NAND_NAME);
 	if (ret) {
 		dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");
 		return ret;
@@ -77,20 +77,18 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	denali->reg = devm_ioremap(denali->dev, csr_base, csr_len);
 	if (!denali->reg) {
 		dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");
-		ret = -ENOMEM;
-		goto regions_release;
+		return -ENOMEM;
 	}
 
 	denali->host = devm_ioremap(denali->dev, mem_base, mem_len);
 	if (!denali->host) {
 		dev_err(&dev->dev, "Spectra: ioremap failed!");
-		ret = -ENOMEM;
-		goto regions_release;
+		return -ENOMEM;
 	}
 
 	ret = denali_init(denali);
 	if (ret)
-		goto regions_release;
+		return ret;
 
 	nsels = denali->nbanks;
 
@@ -118,8 +116,6 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 
 out_remove_denali:
 	denali_remove(denali);
-regions_release:
-	pci_release_regions(dev);
 	return ret;
 }
 
@@ -127,7 +123,6 @@ static void denali_pci_remove(struct pci_dev *dev)
 {
 	struct denali_controller *denali = pci_get_drvdata(dev);
 
-	pci_release_regions(dev);
 	denali_remove(denali);
 }
 
-- 
2.48.1