On Tuesday 11 August 2020 08:39:24 Faiz Abbas wrote:
Pali, Peng,
On 10/08/20 6:25 am, Peng Fan wrote:
Faiz, Jean
Subject: [PATCH] Revert "mmc: disable UHS modes if Vcc cannot be switched on and off"
Got time to take a look?
When this issue was reported in the last thread, Pali said that he was unable to get prints because of the constant reboot loops? Shouldn't it be easy to put while(1) at different points in this execution and see which step causes the reboot loop?
In May in that last thread I wrote details which I was able to gather:
Month ago I was able to detect that problem is somewhere in function mmc_set_ios() from mmc.c file. I put long debug line prior and also after mmc_set_ios() call. And it was printed only prior. Not after. So I think NULL pointer dereference is in mmc_set_ios() function.
I could try with that while(1) loop to print detailed log message and read/capture it. But what information for debugging you need? Or what do you want to print which could help you?