diff options
| author | Leo Yan <leo.yan@arm.com> | 2026-05-15 21:08:15 +0100 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2026-05-18 10:18:45 +0100 |
| commit | 6317302ae25268f53fc292226592a7776b39dffd (patch) | |
| tree | e7e03af58a11e8c19a654d657f8e6e5b75531b8d /scripts/patch-kernel | |
| parent | f37bc31447c0ddafedb25e3c4a4f4e2284034247 (diff) | |
coresight: Take a reference on csdev
coresight_get_ref() currently pins the provider module and takes a
reference on the parent device, but it does not pin &csdev->dev. Take a
reference on &csdev->dev when grabbing a CoreSight device and drop it in
coresight_put_ref().
Reorder the sequence to follow child-to-parent dependencies: first take
a reference on csdev, then on the parent device and grab the driver
module. Once the data and module are pinned, take a PM runtime
reference to power on the hardware.
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Tested-by: James Clark <james.clark@linaro.org>
Tested-by: Jie Gan <jie.gan@oss.qualcomm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20260515-arm_coresight_path_power_management_improvement-v14-8-f88c4a3ecfe9@arm.com
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions