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824efd3741
Commit c039450 (Input: synaptics - handle out of bounds values from the hardware) caused any hardware reported values over 7167 to be treated as a wrapped-around negative value. It turns out that some firmware uses the value 8176 to indicate a finger near the edge of the touchpad whose actual position cannot be determined. This value now gets treated as negative, which can cause pointer jumps and broken edge scrolling on these machines. I only know of one touchpad which reports negative values, and this hardware never reports any value lower than -8 (i.e. 8184). Moving the threshold for treating a value as negative up to 8176 should work fine then for any hardware we currently know about, and since we're dealing with unspecified behavior it's probably the best we can do. The special 8176 value is also likely to result in sudden jumps in position, so let's also clamp this to the maximum specified value for the axis. BugLink: http://bugs.launchpad.net/bugs/1046512 https://bugzilla.kernel.org/show_bug.cgi?id=46371 Cc: stable@vger.kernel.org Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Tested-by: Alan Swanson <swanson@ukfsn.org> Tested-by: Arteom <arutemus@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> |
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| .. | ||
| alps.c | ||
| alps.h | ||
| amimouse.c | ||
| appletouch.c | ||
| atarimouse.c | ||
| bcm5974.c | ||
| elantech.c | ||
| elantech.h | ||
| gpio_mouse.c | ||
| hgpk.c | ||
| hgpk.h | ||
| inport.c | ||
| Kconfig | ||
| lifebook.c | ||
| lifebook.h | ||
| logibm.c | ||
| logips2pp.c | ||
| logips2pp.h | ||
| Makefile | ||
| maplemouse.c | ||
| navpoint.c | ||
| pc110pad.c | ||
| psmouse-base.c | ||
| psmouse.h | ||
| pxa930_trkball.c | ||
| rpcmouse.c | ||
| sentelic.c | ||
| sentelic.h | ||
| sermouse.c | ||
| synaptics_i2c.c | ||
| synaptics_usb.c | ||
| synaptics.c | ||
| synaptics.h | ||
| touchkit_ps2.c | ||
| touchkit_ps2.h | ||
| trackpoint.c | ||
| trackpoint.h | ||
| vsxxxaa.c | ||