linux-kernel - [PATCH] mmc: cavium-thunderx: Use non-hybrid PCI devres API

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Message-ID: <20250417092742.27887-2-phasta@kernel.org>
Date: Thu, 17 Apr 2025 11:27:43 +0200
From: Philipp Stanner <phasta@...nel.org>
To: Robert Richter <rric@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Philipp Stanner <phasta@...nel.org>
Cc: linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mmc: cavium-thunderx: Use non-hybrid PCI devres API

cavium-thunderx enables its 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_all_regions().

Signed-off-by: Philipp Stanner <phasta@...nel.org>
---
 drivers/mmc/host/cavium-thunderx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/mmc/host/cavium-thunderx.c b/drivers/mmc/host/cavium-thunderx.c
index 2e2ff984f0b3..1373deb3f531 100644
--- a/drivers/mmc/host/cavium-thunderx.c
+++ b/drivers/mmc/host/cavium-thunderx.c
@@ -72,7 +72,7 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
 	if (ret)
 		return ret;

-	ret = pci_request_regions(pdev, KBUILD_MODNAME);
+	ret = pcim_request_all_regions(pdev, KBUILD_MODNAME);
 	if (ret)
 		return ret;

@@ -164,7 +164,6 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
 		}
 	}
 	clk_disable_unprepare(host->clk);
-	pci_release_regions(pdev);
 	return ret;
 }

@@ -183,7 +182,6 @@ static void thunder_mmc_remove(struct pci_dev *pdev)
 	writeq(dma_cfg, host->dma_base + MIO_EMM_DMA_CFG(host));

 	clk_disable_unprepare(host->clk);
-	pci_release_regions(pdev);
 }

 static const struct pci_device_id thunder_mmc_id_table[] = {
-- 
2.48.1