6.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haotian Zhang vulab@iscas.ac.cn
[ Upstream commit 4d6ec3a7932ca5b168426f7b5b40abab2b41d2da ]
The driver calls mfd_add_devices() but fails to call mfd_remove_devices() in error paths after successful MFD device registration and in the remove function. This leads to resource leaks where MFD child devices are not properly unregistered.
Replace mfd_add_devices with devm_mfd_add_devices to automatically manage the device resources.
Fixes: c96e976d9a05 ("net: wan: framer: Add support for the Lantiq PEF2256 framer") Suggested-by: Herve Codina herve.codina@bootlin.com Signed-off-by: Haotian Zhang vulab@iscas.ac.cn Acked-by: Herve Codina herve.codina@bootlin.com Link: https://patch.msgid.link/20251105034716.662-1-vulab@iscas.ac.cn Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wan/framer/pef2256/pef2256.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wan/framer/pef2256/pef2256.c b/drivers/net/wan/framer/pef2256/pef2256.c index 1e4c8e85d598d..395ac986f4ab2 100644 --- a/drivers/net/wan/framer/pef2256/pef2256.c +++ b/drivers/net/wan/framer/pef2256/pef2256.c @@ -637,7 +637,8 @@ static int pef2256_add_audio_devices(struct pef2256 *pef2256) audio_devs[i].id = i; }
- ret = mfd_add_devices(pef2256->dev, 0, audio_devs, count, NULL, 0, NULL); + ret = devm_mfd_add_devices(pef2256->dev, 0, audio_devs, count, + NULL, 0, NULL); kfree(audio_devs); return ret; } @@ -812,8 +813,8 @@ static int pef2256_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pef2256);
- ret = mfd_add_devices(pef2256->dev, 0, pef2256_devs, - ARRAY_SIZE(pef2256_devs), NULL, 0, NULL); + ret = devm_mfd_add_devices(pef2256->dev, 0, pef2256_devs, + ARRAY_SIZE(pef2256_devs), NULL, 0, NULL); if (ret) { dev_err(pef2256->dev, "add devices failed (%d)\n", ret); return ret;