linux-kernel - [PATCH 5/9] Input: edt-ft5x06

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: <20230402200951.1032513-6-dario.binacchi@amarulasolutions.com>
Date:   Sun,  2 Apr 2023 22:09:47 +0200
From:   Dario Binacchi <dario.binacchi@...rulasolutions.com>
To:     linux-kernel@...r.kernel.org
Cc:     michael@...rulasolutions.com, linux-amarula@...rulasolutions.com,
        Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Oliver Graute <oliver.graute@...oconnector.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        linux-input@...r.kernel.org
Subject: [PATCH 5/9] Input: edt-ft5x06 - remove code duplication

The use of the macros M06_REG_ADDR and M06_REG_CMD avoids code
duplication without impacting the application load, and reduces the
chances of errors or mistakes.

Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
---

 drivers/input/touchscreen/edt-ft5x06.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index d4f39724b259..7d82f412ab15 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -75,6 +75,9 @@
 #define EDT_DEFAULT_NUM_X		1024
 #define EDT_DEFAULT_NUM_Y		1024
 
+#define M06_REG_CMD(factory) ((factory) ? 0xf3 : 0xfc)
+#define M06_REG_ADDR(factory, addr) ((factory) ? (addr) & 0x7f : (addr) & 0x3f)
+
 enum edt_pmode {
 	EDT_PMODE_NOT_SUPPORTED,
 	EDT_PMODE_HIBERNATE,
@@ -294,8 +297,8 @@ static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata,
 
 	switch (tsdata->version) {
 	case EDT_M06:
-		wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
-		wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
+		wrbuf[0] = M06_REG_CMD(tsdata->factory_mode);
+		wrbuf[1] = M06_REG_ADDR(tsdata->factory_mode, addr);
 		wrbuf[2] = value;
 		wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2];
 		return edt_ft5x06_ts_readwrite(tsdata->client, 4,
@@ -324,8 +327,8 @@ static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata,
 
 	switch (tsdata->version) {
 	case EDT_M06:
-		wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
-		wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
+		wrbuf[0] = M06_REG_CMD(tsdata->factory_mode);
+		wrbuf[1] = M06_REG_ADDR(tsdata->factory_mode, addr);
 		wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40;
 
 		error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2,
-- 
2.32.0