5.15-stable review patch. If anyone has any objections, please let me know.
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From: Miaoqian Lin linmq006@gmail.com
commit 96cf8500934e0ce2a6c486f1dbc3b1fff12f7a5e upstream.
The function qcom_slim_ngd_notify_slaves() calls of_slim_get_device() which internally uses device_find_child() to obtain a device reference. According to the device_find_child() documentation, the caller must drop the reference with put_device() after use.
Found via static analysis and this is similar to commit 4e65bda8273c ("ASoC: wcd934x: fix error handling in wcd934x_codec_parse_data()")
Fixes: 917809e2280b ("slimbus: ngd: Add qcom SLIMBus NGD driver") Cc: stable stable@kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@oss.qualcomm.com Link: https://patch.msgid.link/20251027060601.33228-1-linmq006@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/slimbus/qcom-ngd-ctrl.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -1164,6 +1164,7 @@ static void qcom_slim_ngd_notify_slaves(
if (slim_get_logical_addr(sbdev)) dev_err(ctrl->dev, "Failed to get logical address\n"); + put_device(&sbdev->dev); } }