| Message ID | 1619485258-35689-1-git-send-email-bbhatt@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | bus: mhi: core: Improve debug messages for power on | expand |
Hi Bhaumik, On 4/26/21 6:00 PM, Bhaumik Bhatt wrote: > Improve error message to be more descriptive if a failure occurs > with an invalid power on execution environment. Also add a debug > message to print the execution environment and MHI state before > a power on is attempted to get a better view of device states. Can we add a scenario where this dbg log can help ? That gives a good justification for addition of new log. > > Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org> > --- > drivers/bus/mhi/core/pm.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c > index adf426c..f4a8b9a 100644 > --- a/drivers/bus/mhi/core/pm.c > +++ b/drivers/bus/mhi/core/pm.c > @@ -1076,12 +1076,16 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) > > /* Confirm that the device is in valid exec env */ > if (!MHI_IN_PBL(current_ee) && current_ee != MHI_EE_AMSS) { > - dev_err(dev, "Not a valid EE for power on\n"); > + dev_err(dev, "%s is not a valid EE for power on\n", > + TO_MHI_EXEC_STR(current_ee)); > ret = -EIO; > goto error_async_power_up; > } > > state = mhi_get_mhi_state(mhi_cntrl); > + dev_dbg(dev, "Attempting power on with EE: %s, state: %s\n", > + TO_MHI_EXEC_STR(current_ee), TO_MHI_STATE_STR(state)); > + > if (state == MHI_STATE_SYS_ERR) { > mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET); > ret = wait_event_timeout(mhi_cntrl->state_event, > Thanks, Hemant
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c index adf426c..f4a8b9a 100644 --- a/drivers/bus/mhi/core/pm.c +++ b/drivers/bus/mhi/core/pm.c @@ -1076,12 +1076,16 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) /* Confirm that the device is in valid exec env */ if (!MHI_IN_PBL(current_ee) && current_ee != MHI_EE_AMSS) { - dev_err(dev, "Not a valid EE for power on\n"); + dev_err(dev, "%s is not a valid EE for power on\n", + TO_MHI_EXEC_STR(current_ee)); ret = -EIO; goto error_async_power_up; } state = mhi_get_mhi_state(mhi_cntrl); + dev_dbg(dev, "Attempting power on with EE: %s, state: %s\n", + TO_MHI_EXEC_STR(current_ee), TO_MHI_STATE_STR(state)); + if (state == MHI_STATE_SYS_ERR) { mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET); ret = wait_event_timeout(mhi_cntrl->state_event,
Improve error message to be more descriptive if a failure occurs with an invalid power on execution environment. Also add a debug message to print the execution environment and MHI state before a power on is attempted to get a better view of device states. Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org> --- drivers/bus/mhi/core/pm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)