linux-kernel - Re: [PATCH v4 3/6] mfd: ti_am335x_tscadc: Remove unwanted reg_se

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Date:	Fri, 21 Nov 2014 14:10:36 +0100
From:	Richard Cochran <richardcochran@...il.com>
To:	Sekhar Nori <nsekhar@...com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Lee Jones <lee.jones@...aro.org>, Vignesh R <vigneshr@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Benoit Cousson <bcousson@...libre.com>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Jonathan Cameron <jic23@...nel.org>,
	Hartmut Knaack <knaack.h@....de>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald <pmeerw@...erw.net>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Felipe Balbi <balbi@...com>, Brad Griffis <bgriffis@...com>,
	Sanjeev Sharma <sanjeev_sharma@...tor.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Jan Kardell <jan.kardell@...liq.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-iio@...r.kernel.org, linux-input@...r.kernel.org,
	Robert Nelson <robertcnelson@...il.com>
Subject: Re: [PATCH v4 3/6] mfd: ti_am335x_tscadc: Remove unwanted
 reg_se_cache save

On Fri, Nov 21, 2014 at 05:40:12PM +0530, Sekhar Nori wrote:
> Not sure how to reproduce the jumping on pen-up.

Does the cursor stay in exactly the same spot when you lift up the
stylus? Then you don't have the issue.

On the BB white using the LCD4 cape and the shipped debian kernel, the
cursor *does* jump away, but not as often or as far as on the custom
design I was working with.

Thanks,
Richard
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