diff mbox series

[v11,4/4] soc: qcom: rpmh: Invalidate SLEEP and WAKE TCSes before flushing new data

Message ID 1583408856-1120-5-git-send-email-mkshah@codeaurora.org (mailing list archive)
State Superseded
Headers show
Series Invoke rpmh_flush for non OSI targets | expand

Commit Message

Maulik Shah March 5, 2020, 11:47 a.m. UTC
TCSes have previously programmed data when rpmh_flush is called.
This can cause old data to trigger along with newly flushed.

Fix this by cleaning SLEEP and WAKE TCSes before new data is flushed.

Fixes: 600513dfeef3 ("drivers: qcom: rpmh: cache sleep/wake state requests")
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
---
 drivers/soc/qcom/rpmh.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/soc/qcom/rpmh.c b/drivers/soc/qcom/rpmh.c
index 1951f6a..63364ce 100644
--- a/drivers/soc/qcom/rpmh.c
+++ b/drivers/soc/qcom/rpmh.c
@@ -472,6 +472,11 @@  int rpmh_flush(struct rpmh_ctrlr *ctrlr)
 		return 0;
 	}
 
+	/* Invalidate the TCSes first to avoid stale data */
+	do {
+		ret = rpmh_rsc_invalidate(ctrlr_to_drv(ctrlr));
+	} while (ret == -EAGAIN);
+
 	/* First flush the cached batch requests */
 	ret = flush_batch(ctrlr);
 	if (ret)