[PATCH v2 05/10] rpmsg: smd: allow opening rpm_requests even if already opened

Luca Weiss
2022-02-20T20:20:01Z

On msm8953 the channel seems to be already opened when booting Linux but
we still need to open it for communication with regulators etc.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
Changes in v2:
- rework original patch, don't drop condition completely but allow force
opening rpm_requests channel

drivers/rpmsg/qcom_smd.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 540e027f08c4..887e21ca51f2 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1288,9 +1288,14 @@ static void qcom_channel_state_worker(struct work_struct *work)
if (channel->state != SMD_CHANNEL_CLOSED)
continue;

+ /*
+ * Always open rpm_requests, even when already opened which is
+ * required on some SoCs like msm8953.
+ */
remote_state = GET_RX_CHANNEL_INFO(channel, state);
if (remote_state != SMD_CHANNEL_OPENING &&
- remote_state != SMD_CHANNEL_OPENED)
+ remote_state != SMD_CHANNEL_OPENED &&
+ strcmp(channel->name, "rpm_requests"))
continue;

if (channel->registered)
--
2.35.1