linux-kernel - [PATCH 3.16.y-ckt 025/144] Input: synaptics - log queried and quirked dimension values

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Message-Id: <1429630329-21748-26-git-send-email-luis.henriques@canonical.com>
Date:	Tue, 21 Apr 2015 16:30:10 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Daniel Martin <consume.noise@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 025/144] Input: synaptics - log queried and quirked dimension values

3.16.7-ckt10 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Martin <consume.noise@...il.com>

commit 9aff65982d0f58a78a27769fba7e97bc937b2593 upstream.

Logging the dimension values we queried and the values we use from a quirk
to overwrite can be helpful for debugging.

This partly relates to bug:
    https://bugzilla.kernel.org/show_bug.cgi?id=91541

Signed-off-by: Daniel Martin <consume.noise@...il.com>
Acked-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/input/mouse/synaptics.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index bb097facf7f1..9240d6fa0c6d 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -359,6 +359,9 @@ static int synaptics_resolution(struct psmouse *psmouse)
 		} else {
 			priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
 			priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
+			psmouse_info(psmouse,
+				     "queried max coordinates: x [..%d], y [..%d]\n",
+				     priv->x_max, priv->y_max);
 		}
 	}
 
@@ -370,6 +373,9 @@ static int synaptics_resolution(struct psmouse *psmouse)
 		} else {
 			priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
 			priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
+			psmouse_info(psmouse,
+				     "queried min coordinates: x [%d..], y [%d..]\n",
+				     priv->x_min, priv->y_min);
 		}
 	}
 
@@ -392,6 +398,10 @@ static void synaptics_apply_quirks(struct psmouse *psmouse)
 			priv->x_max = min_max_pnpid_table[i].x_max;
 			priv->y_min = min_max_pnpid_table[i].y_min;
 			priv->y_max = min_max_pnpid_table[i].y_max;
+			psmouse_info(psmouse,
+				     "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
+				     priv->x_min, priv->x_max,
+				     priv->y_min, priv->y_max);
 			break;
 		}
 	}
--
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