From: Daniel Martin <consume.noise@gmail.com>
Date: Sun, 8 Mar 2015 22:28:29 -0700
Subject: [PATCH] Input: synaptics - log queried and quirked dimension values

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

Cc: stable@vger.kernel.org
Signed-off-by: Daniel Martin <consume.noise@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.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 b501dda75dcb..47c5dca20a60 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -362,6 +362,9 @@ 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);
 		}
 	}
 
@@ -373,6 +376,9 @@ 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);
 		}
 	}
 
@@ -395,6 +401,10 @@ 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;
 		}
 	}
-- 
2.1.0