Re: [PATCH] coresight: tpdm: initialize spinlock before exposing sysfs

On Tue, Aug 25, 2026 at 10:06:47AM +0800, yingchao wrote:

From: Yingchao Deng dengyingchao@kylinsec.com.cn

tpdm_probe() initializes drvdata->spinlock after coresight_register(), but the sysfs attributes registered by coresight_register() use the spinlock. This exposes a window where a concurrent sysfs write can lock an uninitialized spinlock.

Initialize the spinlock before coresight_register().

Fixes: b3c71626a933 ("Coresight: Add coresight TPDM source driver") Signed-off-by: Yingchao Deng dengyingchao@kylinsec.com.cn

Reviewed-by: Leo Yan leo.yan@arm.com