[lkml]   [2020]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 05/18] bus: mhi: core: Trigger host resume if suspended during mhi_device_get()
From: Bhaumik Bhatt <>

It is possible that the host may be suspending or suspended and may
not allow an outgoing device wake assert immediately if a client has
requested for it. Ensure that the host wakes up and allows for it so
the client does not have to wait for an external trigger or an
outgoing packet to be queued for the host resume to occur.

Signed-off-by: Bhaumik Bhatt <>
Reviewed-by: Manivannan Sadhasivam <>
Signed-off-by: Manivannan Sadhasivam <>
drivers/bus/mhi/core/pm.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
index b227d415e937..27bb471c8f4e 100644
--- a/drivers/bus/mhi/core/pm.c
+++ b/drivers/bus/mhi/core/pm.c
@@ -1112,6 +1112,9 @@ void mhi_device_get(struct mhi_device *mhi_dev)

+ if (MHI_PM_IN_SUSPEND_STATE(mhi_cntrl->pm_state))
+ mhi_trigger_resume(mhi_cntrl);
mhi_cntrl->wake_get(mhi_cntrl, true);
 \ /
  Last update: 2020-09-21 18:10    [W:0.107 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site