Thread (9 messages) 9 messages, 2 authors, 2011-08-25

Re: [RFC/RFT][PATCH] Input: tsc2007 - convert to threaded IRQ

From: Thierry Reding <hidden>
Date: 2011-08-25 08:25:18

* Dmitry Torokhov wrote:
On Thu, Aug 25, 2011 at 12:56:25AM -0700, Dmitry Torokhov wrote:
quoted
On Thu, Aug 25, 2011 at 09:52:54AM +0200, Thierry Reding wrote:
quoted
* Dmitry Torokhov wrote:
quoted
On Thu, Aug 25, 2011 at 09:06:57AM +0200, Thierry Reding wrote:
quoted
* Dmitry Torokhov wrote:
quoted
On Thu, Aug 25, 2011 at 08:21:59AM +0200, Thierry Reding wrote:
quoted
* Dmitry Torokhov wrote:
quoted
This is completely untested but I believe it should work better than original
workqueue solution, especially when we do not have get_pendown_state method
available. I wonder if it will help Richard's issue with IRQ getting re-raised
after pen up event.

Anyone who has hardware - please give it a spin.
I can see no noticeable changes with this patch.
That's the result I was aiming for ;) Thanks for testing.

Oh, crap... Does it still work if you change IRQ flags in
request_threaded_irq() from 0 to IRQF_ONESHOT? 

Also, while we are at it would you ming trying out another patch
(below)?
With both your patch applied and the change from 0 to IRQF_ONESHOT the driver
oopses when loaded. I didn't have time to investigate further, but I think I
could perhaps test a couple more patches if you provide them.
Hmm, can't spot the problem... Where does it die?
I'll see if I can track it down, but I have very limited time.
Don't worry, there is no rush whatsoever... I'll try to ponder the code
some more.
I think we fail in tsc2007_open(), instead of "if (err) {" it should say
"if (err < 0) {"... but I still wonder why this causes oops...
It was indeed the open() call that was failing and changing "if (err) {" to
"if (err < 0) {" does indeed fix the issue.

Again, no negative nor positive changes in the touchscreen behaviour. So
again,

Tested-by: Thierry Reding <redacted>

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