Re: [PATCH 1/1] gpio: omap: Fix PM runtime issue and remove most BANK_USED macros

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

 



On Tue, Apr 21, 2015 at 6:08 PM, Tony Lindgren <tony@xxxxxxxxxxx> wrote:

> Looks like omap_gpio_irq_type can return early at several places
> leaving a GPIO bank enabled without doing pm_runtime_put if wrong
> GPIO arguments are passed.
>
> Instead of adding more complicated BANK_USED macros, let's fix the
> issue properly. We can pass is_irq flag to omap_enable_gpio_module
> and omap_disble_gpio_module. And with that we can remove all the
> similar code elsewhere to get rid of most BANK_USED macros.
>
> Note that the reason for the BANK_USED macro is that we need to manage
> PM runtime on per GPIO bank basis. In the long run we want to move to
> using PM runtime counts for each GPIO line to determine if a GPIO
> bank is used. Once we have a solution for omap_enable_gpio_module
> and omap_disable_gpio_module, we can remove the remaining BANK_USED
> macros.
>
> Cc: Felipe Balbi <balbi@xxxxxx>
> Cc: Grygorii Strashko <grygorii.strashko@xxxxxxxxxx>
> Cc: Javier Martinez Canillas <jmartinez@xxxxxxxxxxxxxx>
> Cc: Nishanth Menon <nm@xxxxxx>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>

There is so much discussion around this patch that I can't make
up my mind whether I should apply this or some subsequent inline
version of it.

Holding this off for now...

Yours,
Linus Walleij
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux