linux-kernel - [RFC 1/4] Input: edt-ft5x06 - Use max support points to determine how much to read

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1444220501-23623-2-git-send-email-fcooper@ti.com>
Date:	Wed,  7 Oct 2015 07:21:38 -0500
From:	fcooper@...com
To:	dmitry.torokhov@...il.com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, fcooper@...com,
	maxime.ripard@...e-electrons.com, LW@...O-electronics.de,
	jg1.han@...sung.com, asaf.vertz@...demg.com
Subject: [RFC 1/4] Input: edt-ft5x06 - Use max support points to determine how much to read

From: Franklin S Cooper Jr <fcooper@...com>

Calculate the amount of data that needs to be read for the specified max
number of support points. If the maximum number of support points changes
then the amount that is read from the touch screen controller should
reflect this.

Signed-off-by: Franklin S Cooper Jr <fcooper@...com>
---
 drivers/input/touchscreen/edt-ft5x06.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 7239c31..1e0ed6e 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -178,14 +178,16 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
 		cmd = 0xf9; /* tell the controller to send touch data */
 		offset = 5; /* where the actual touch data starts */
 		tplen = 4;  /* data comes in so called frames */
-		datalen = 26; /* how much bytes to listen for */
+
+		/* how many bytes to listen for */
+		datalen = tplen * MAX_SUPPORT_POINTS + offset + 1;
 		break;
 
 	case M09:
 		cmd = 0x02;
 		offset = 1;
 		tplen = 6;
-		datalen = 29;
+		datalen = tplen * MAX_SUPPORT_POINTS - cmd + 1;
 		break;
 
 	default:
-- 
2.6.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/