msm-4.14

mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00

History

Angelo G. Del Regno ef222e3b72 rpm-smd: Avoid deadlocking while waiting for ACK from RPM

The RPM may give back no ACK when sending a command: this
means that it is locking up for some reason, or the
command itself didn't get sent to it.

When we get in this situation, an infinite wait for completion
will lock up the device for an infinite amount of time, until
the user manually reboots it with a power cut or KPDPWR+RESIN
combination.

For this reason, add a timeout to the completion wait (as of
now, very large I'd say) to avoid indefinitely waiting and,
if the timeout is reached with no ACK reply, just return a
-ETIMEDOUT error, so that we will either end up recoverying
from this error state or rebooting the device by panicking
the kernel if subsequent retries won't work.

This issue is largely seen on SMD communication and rarely
on SoCs using GLINK to communicate to the RPM.

Change-Id: Ifb701e767edab792d92d71fdc05a3e0edd91d766
Signed-off-by: Richard Raya <rdxzv.dev@gmail.com>

2024-11-01 20:36:51 -03:00

Kconfig

rpmsg: Add glink-bgcom driver for rpmsg framework

2020-07-04 12:59:47 +05:30

Makefile

rpmsg: Add glink-bgcom driver for rpmsg framework

2020-07-04 12:59:47 +05:30

qcom_glink_bgcom.c

rpmsg: bgcom: out of bound read from process_cmd

2024-05-20 06:19:11 -07:00

qcom_glink_native.c

Merge tag 'LA.UM.9.1.r1-16400-SMxxx0.QSSI14.0' of https://git.codelinaro.org/clo/la/kernel/msm-4.14