This calculation determines the physical dimensions of the tablet,
used later on in calculate_touch_res to obtain the touch sensor
resolution.
Instead of dividing the logical size by the resolution, the current
code performs a multiplication. This doesn't pose a problem for the
3rd-gen Bamboo since the resolution and scale factor happen to be
identical, but will produce an incorrect result for other cases.
Signed-off-by: Jason Gerecke <killert...@gmail.com>
---
drivers/input/tablet/wacom_sys.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index c9588ee..dc07821 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -184,9 +184,9 @@ static int wacom_parse_logical_collection(unsigned char
*report,
* data before its overwritten.
*/
features->x_phy =
- (features->x_max * features->x_resolution) / 100;
+ (features->x_max * 100) / features->x_resolution;
features->y_phy =
- (features->y_max * features->y_resolution) / 100;
+ (features->y_max * 100) / features->y_resolution;
features->x_max = features->y_max =
get_unaligned_le16(&report[10]);
--
1.7.9.1
------------------------------------------------------------------------------
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