linux-kernel - Re: [PATCH v3 3/3] pinctrl: qcom: Don't allow protected pins to be requested

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Message-ID: <59df3700-c0bd-6ee8-eeab-6a49cb92d1db@codeaurora.org>
Date:   Thu, 22 Mar 2018 19:59:57 -0500
From:   Timur Tabi <timur@...eaurora.org>
To:     Stephen Boyd <swboyd@...omium.org>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     Stephen Boyd <sboyd@...eaurora.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Grant Likely <grant.likely@...retlab.ca>,
        linux-gpio@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v3 3/3] pinctrl: qcom: Don't allow protected pins to be
 requested

On 03/22/2018 07:23 PM, Timur Tabi wrote:
> 
> Also, you don't allocate chip->valid_mask anywhere.

So I see now where it's allocated, but something is fishy.  I have three 
TLMMs on my chip:

[   67.107018] gpiochip_init_valid_mask:351 gpiochip->need_valid_mask=1
[   67.153747] gpiochip_init_valid_mask:356 gpiochip->ngpio=72
[   67.195324] gpiochip_init_valid_mask:361 
gpiochip->valid_mask=0000000070b1a4b6
[   68.532992] gpiochip_init_valid_mask:356 gpiochip->ngpio=44
[   68.574496] gpiochip_init_valid_mask:361 
gpiochip->valid_mask=000000002f33b8a3
[   68.709378] msm_gpio_init_valid_mask:837 ret=44 max_gpios=44 
chip->valid_mask=000000002f33b8a3
[   69.726502] gpiochip_init_valid_mask:351 gpiochip->need_valid_mask=1
[   69.772960] gpiochip_init_valid_mask:356 gpiochip->ngpio=54
[   69.814084] gpiochip_init_valid_mask:361 
gpiochip->valid_mask=000000001a53c932

Are these normal addresses for kcalloc() to return?  They're not even 
word-aligned.

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