diff options
| author | Johan Hovold <johan@kernel.org> | 2025-09-09 11:56:50 +0200 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2025-09-10 11:48:56 +0200 |
| commit | 6ab4f79ea92324f7f2eb22692054a34bbba7cf35 (patch) | |
| tree | 7f4de20a9a59120798dead7153da9e2e07265fb8 | |
| parent | 8f5ae30d69d7543eee0d70083daf4de8fe15d585 (diff) | |
soc: mediatek: mtk-svs: fix device leaks on mt8183 probe failure
Make sure to drop the references taken by of_find_device_by_node() when
looking up the thermal sensor and opp devices during probe on probe
failure (e.g. probe deferral) and on driver unbind.
Fixes: 681a02e95000 ("soc: mediatek: SVS: introduce MTK SVS engine")
Cc: Roger Lu <roger.lu@mediatek.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250909095651.5530-2-johan@kernel.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
| -rw-r--r-- | drivers/soc/mediatek/mtk-svs.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c index 7c349a94b45c..48804e1e5a6c 100644 --- a/drivers/soc/mediatek/mtk-svs.c +++ b/drivers/soc/mediatek/mtk-svs.c @@ -2165,6 +2165,13 @@ static struct device *svs_add_device_link(struct svs_platform *svsp, return dev; } +static void svs_put_device(void *_dev) +{ + struct device *dev = _dev; + + put_device(dev); +} + static int svs_mt8192_platform_probe(struct svs_platform *svsp) { struct device *dev; @@ -2216,11 +2223,13 @@ static int svs_mt8183_platform_probe(struct svs_platform *svsp) { struct device *dev; u32 idx; + int ret; dev = svs_add_device_link(svsp, "thermal-sensor"); if (IS_ERR(dev)) return dev_err_probe(svsp->dev, PTR_ERR(dev), "failed to get thermal device\n"); + put_device(dev); for (idx = 0; idx < svsp->bank_max; idx++) { struct svs_bank *svsb = &svsp->banks[idx]; @@ -2230,6 +2239,7 @@ static int svs_mt8183_platform_probe(struct svs_platform *svsp) case SVSB_SWID_CPU_LITTLE: case SVSB_SWID_CPU_BIG: svsb->opp_dev = get_cpu_device(bdata->cpu_id); + get_device(svsb->opp_dev); break; case SVSB_SWID_CCI: svsb->opp_dev = svs_add_device_link(svsp, "cci"); @@ -2246,6 +2256,11 @@ static int svs_mt8183_platform_probe(struct svs_platform *svsp) return dev_err_probe(svsp->dev, PTR_ERR(svsb->opp_dev), "failed to get OPP device for bank %d\n", idx); + + ret = devm_add_action_or_reset(svsp->dev, svs_put_device, + svsb->opp_dev); + if (ret) + return ret; } return 0; |