[v1,1/2] media: imx: imx8mq-mipi-csi2: fix system resume issue
Commit Message
during system resume, interconnect bandwidth would be requested even
though the device is runtime suspended. This leaves the system in an
unbalanced state. Fix that by checking the state before.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
---
drivers/staging/media/imx/imx8mq-mipi-csi2.c | 6 ++++++
1 file changed, 6 insertions(+)
@@ -714,6 +714,9 @@ static int imx8mq_mipi_csi_pm_suspend(struct device *dev, bool runtime)
mutex_unlock(&state->lock);
+ if (!runtime && pm_runtime_suspended(state->dev))
+ return 0;
+
ret = icc_set_bw(state->icc_path, 0, 0);
if (ret)
dev_err(dev, "icc_set_bw failed with %d\n", ret);
@@ -727,6 +730,9 @@ static int imx8mq_mipi_csi_pm_resume(struct device *dev, bool runtime)
struct csi_state *state = mipi_sd_to_csi2_state(sd);
int ret = 0;
+ if (!runtime && pm_runtime_suspended(state->dev))
+ return 0;
+
ret = icc_set_bw(state->icc_path, 0, state->icc_path_bw);
if (ret) {
dev_err(dev, "icc_set_bw failed with %d\n", ret);