Re: [RFT PATCH 14/21] hte: tegra194: don't access struct gpio_chip

[Dipen Patel]

On 10/4/23 5:00 AM, Bartosz Golaszewski wrote:
> On Thu, Sep 7, 2023 at 9:28 AM Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>>
>> On Tue, Sep 5, 2023 at 8:53 PM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
>>
>>> From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
>>>
>>> Using struct gpio_chip is not safe as it will disappear if the
>>> underlying driver is unbound for any reason. Switch to using reference
>>> counted struct gpio_device and its dedicated accessors.
>>>
>>> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
>>
>> As Andy points out add <linux/cleanup.h>, with that fixed:
>> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
>>
>> I think this can be merged into the gpio tree after leaving some
>> slack for the HTE maintainer to look at it, things look so much
>> better after this.
>>
>> Yours,
>> Linus Walleij
> 
> Dipen,
> 
> if you could give this patch a test and possibly ack it for me to take
> it through the GPIO tree (or go the immutable tag from HTE route) then
> it would be great. This is the last user of gpiochip_find() treewide,
> so with it we could remove it entirely for v6.7.

Progress so far for the RFT...

I tried applying the patch series on 6.6-rc1 and it did not apply cleanly,
some patches I needed to manually apply and correct. With all this, it failed
compilation at some spi/spi-bcm2835 driver. I disabled that and was able to
compile. I thought I should let you know this part.

Now, I tried to test the hte and it seems to fail finding the gpio device,
roughly around this place [1]. I thought it would be your patch series so
tried to just use 6.6rc1 without your patches and it still failed at the
same place. I have to trace back now from which kernel version it broke.

> 
> Bart