[Raring][Saucy][PATCH 1/1] Input: cypress_ps2 - Return zero finger count if palm is detected.

Joseph Salisbury joseph.salisbury at canonical.com
Tue Sep 24 15:57:36 UTC 2013


BugLink: http://bugs.launchpad.net/bugs/1229361

This patch sets the finger count to 0 in the case of palm contact.

Signed-off-by: Joseph Salisbury <joseph.salisbury at canonical.com>

---
 drivers/input/mouse/cypress_ps2.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c
index 45b3eda..95b2c40 100644
--- a/drivers/input/mouse/cypress_ps2.c
+++ b/drivers/input/mouse/cypress_ps2.c
@@ -441,7 +441,7 @@ static int cypress_get_finger_count(unsigned char header_byte)
 			case 2: return 5;
 			default:
 				/* Invalid contact (e.g. palm). Ignore it. */
-				return -1;
+				return 0;
 		}
 	}
 
@@ -460,7 +460,7 @@ static int cypress_parse_packet(struct psmouse *psmouse,
 
 	contact_cnt = cypress_get_finger_count(header_byte);
 
-	if (contact_cnt < 0) /* e.g. palm detect */
+	if (contact_cnt < 0)
 		return -EINVAL;
 
 	report_data->contact_cnt = contact_cnt;
-- 
1.7.9.5





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