Re: [PATCH v5 3/3] gpiolib: Show correct direction from the beginning

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, Oct 5, 2018 at 11:54 AM Timur Tabi <timur@xxxxxxxxxx> wrote:
> If you want, just put a printk(... offset) in msm_gpio_get() and read
> from a GPIO that you know you have access to, and make sure the
> 'offset' is correct.
>
> Then try reading from a GPIO that you don't have access to, and make
> sure you get a failure before msm_gpio_get() is called.

Just FYI, if you use sysfs to write to the GPIO, based on the kernel
log you pasted, GPIO 362 in sysfs is actually pin 0 in the TLMM.

If you use gpio-test, it uses gpiolib which figures this all out for
you.  There should still be the gpio-test wiki page I wrote that tells
you how to use it.



[Index of Archives]     [Linux SPI]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux