Re: [PATCH 1/2] i2c: slave-eeprom: initialize empty eeprom properly
From: Bjorn Ardo
Date: Wed Apr 22 2020 - 05:30:42 EST
On 4/21/20 2:16 PM, Wolfram Sang wrote:
Yes, it might be easiest if he merges your patch (with attribution) into
the else branch of his fw-load patch.
OK, so to summarize, I should update my patch to use
device_property_read_string() instead and also init the memory to 0XFF if no
file is present. And change name of the function to
Or something else went wrong.
I did like this now: If device_property_read_string() returns a firmware
name, I use that, otherwise init to 0xFF. But if it returns a firmware
name, and for some reason I get an error when trying to load that
firmware I will not default to 0xFF, but rather fail the probe. The
logic in that is that if you actively supply a firmware name, you should
not silently get 0xFF in your eeprom. Does that sound good?
i2c_slave_init_eeprom_data.
Yes, that is my idea. You also need to replace checking for an of_node
with some equivalent for device properties maybe, but that should be
easy to find out.
It appears to me that those kind of checks are done inside
device_property_read_string() so I can just remove them and only look at
the return value of that function.
I will look into that and let you know once I'm done.
Thank you!
I have a patch now working on 4.14, will run some tests on it and then
try to forward-port to latest kernel och see if it works there as well.
/BA