linux-kernel - [PATCH] media: cx25821: Fix a resource leak in cx25821_dev

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Message-Id: <20260103074647.1941895-1-lihaoxiang@isrc.iscas.ac.cn>
Date: Sat,  3 Jan 2026 15:46:47 +0800
From: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
To: mchehab@...nel.org
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
Subject: [PATCH] media: cx25821: Fix a resource leak in cx25821_dev_setup()

Add release_mem_region() if ioremap() fails to release the memory
region obtained by cx25821_get_resources().

Signed-off-by: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
---
 drivers/media/pci/cx25821/cx25821-core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/pci/cx25821/cx25821-core.c b/drivers/media/pci/cx25821/cx25821-core.c
index 6627fa9166d3..a7336be44474 100644
--- a/drivers/media/pci/cx25821/cx25821-core.c
+++ b/drivers/media/pci/cx25821/cx25821-core.c
@@ -908,6 +908,7 @@ static int cx25821_dev_setup(struct cx25821_dev *dev)
 
 	if (!dev->lmmio) {
 		CX25821_ERR("ioremap failed, maybe increasing __VMALLOC_RESERVE in page.h\n");
+		release_mem_region(dev->base_io_addr, pci_resource_len(dev->pci, 0));
 		cx25821_iounmap(dev);
 		return -ENOMEM;
 	}
-- 
2.25.1