Thread (27 messages) 27 messages, 6 authors, 2017-07-25

[PATCH 2/4] gpio: davinci: Handle the return value of davinci_gpio_irq_setup function

From: johan@kernel.org (Johan Hovold)
Date: 2017-07-20 10:05:18
Also in: linux-devicetree, linux-gpio, lkml

On Thu, Jul 20, 2017 at 03:32:27PM +0530, Keerthy wrote:
On Thursday 20 July 2017 03:20 PM, Johan Hovold wrote:
quoted
On Thu, Jul 20, 2017 at 02:40:37PM +0530, Keerthy wrote:
quoted
On Thursday 20 July 2017 12:14 PM, Keerthy wrote:
quoted
On Wednesday 19 July 2017 04:40 PM, Johan Hovold wrote:
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There's a separate but related bug here too as the clk_prepare_enable()
in davinci_gpio_irq_setup() is never balanced on driver unbind.
Yes Johan. I will send that as a separate patch.
This is already fixed in the latest kernel:

commit 6dc0048cff988858254fcc26becfc1e9753efa79
Author: Arvind Yadav [off-list ref]
Date:   Tue May 23 14:48:57 2017 +0530
That change only handles errors in davinci_gpio_irq_setup() (i.e. during
probe) and not the imbalance at driver unbind that I was referring to.
Okay got it. One more clk_unprepare_disable() call needs to be there in
probe err path.
No, you need to balance it on driver unbind, that is, in a new remove()
callback.

Johan
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