linux-kernel - [PATCH 20/26] media: dvb-usb: ttusb2: use an enum for the device number

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Date:   Mon, 28 Mar 2022 22:41:32 +0200
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: [PATCH 20/26] media: dvb-usb: ttusb2: use an enum for the device number

The device number is currently a value that needs to be the same
on two separate tables, but the code doesn't actually enforce it,
leading to errors as boards get added or removed.

Fix it by using an enum.

Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH 00/26] at: https://lore.kernel.org/all/cover.1648499509.git.mchehab@kernel.org/

 drivers/media/usb/dvb-usb/ttusb2.c | 36 +++++++++++++++++-------------
 include/media/dvb-usb-ids.h        |  4 ++--
 2 files changed, 23 insertions(+), 17 deletions(-)

diff --git a/drivers/media/usb/dvb-usb/ttusb2.c b/drivers/media/usb/dvb-usb/ttusb2.c
index 294274fd8f55..373ffa7f641e 100644
--- a/drivers/media/usb/dvb-usb/ttusb2.c
+++ b/drivers/media/usb/dvb-usb/ttusb2.c
@@ -630,17 +630,23 @@ static int ttusb2_probe(struct usb_interface *intf,
 	return -ENODEV;
 }
 
-static struct usb_device_id ttusb2_table [] = {
-	{ USB_DEVICE(USB_VID_PINNACLE, USB_PID_PCTV_400E) },
-	{ USB_DEVICE(USB_VID_PINNACLE, USB_PID_PCTV_450E) },
-	{ USB_DEVICE(USB_VID_TECHNOTREND,
-		USB_PID_TECHNOTREND_CONNECT_S2400) },
-	{ USB_DEVICE(USB_VID_TECHNOTREND,
-		USB_PID_TECHNOTREND_CONNECT_CT3650) },
-	{ USB_DEVICE(USB_VID_TECHNOTREND,
-		USB_PID_TECHNOTREND_CONNECT_S2400_8KEEPROM) },
-	{}		/* Terminating entry */
+enum {
+	PINNACLE_PCTV_400E,
+	PINNACLE_PCTV_450E,
+	TECHNOTREND_CONNECT_S2400,
+	TECHNOTREND_CONNECT_CT3650,
+	TECHNOTREND_CONNECT_S2400_8KEEPROM,
 };
+
+static struct usb_device_id ttusb2_table[] = {
+	DVB_USB_DEV(PINNACLE, PINNACLE_PCTV_400E),
+	DVB_USB_DEV(PINNACLE, PINNACLE_PCTV_450E),
+	DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_S2400),
+	DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_CT3650),
+	DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_S2400_8KEEPROM),
+	{ }
+};
+
 MODULE_DEVICE_TABLE (usb, ttusb2_table);
 
 static struct dvb_usb_device_properties ttusb2_properties = {
@@ -688,11 +694,11 @@ static struct dvb_usb_device_properties ttusb2_properties = {
 	.num_device_descs = 2,
 	.devices = {
 		{   "Pinnacle 400e DVB-S USB2.0",
-			{ &ttusb2_table[0], NULL },
+			{ &ttusb2_table[PINNACLE_PCTV_400E], NULL },
 			{ NULL },
 		},
 		{   "Pinnacle 450e DVB-S USB2.0",
-			{ &ttusb2_table[1], NULL },
+			{ &ttusb2_table[PINNACLE_PCTV_450E], NULL },
 			{ NULL },
 		},
 	}
@@ -743,11 +749,11 @@ static struct dvb_usb_device_properties ttusb2_properties_s2400 = {
 	.num_device_descs = 2,
 	.devices = {
 		{   "Technotrend TT-connect S-2400",
-			{ &ttusb2_table[2], NULL },
+			{ &ttusb2_table[TECHNOTREND_CONNECT_S2400], NULL },
 			{ NULL },
 		},
 		{   "Technotrend TT-connect S-2400 (8kB EEPROM)",
-			{ &ttusb2_table[4], NULL },
+			{ &ttusb2_table[TECHNOTREND_CONNECT_S2400_8KEEPROM], NULL },
 			{ NULL },
 		},
 	}
@@ -823,7 +829,7 @@ static struct dvb_usb_device_properties ttusb2_properties_ct3650 = {
 	.num_device_descs = 1,
 	.devices = {
 		{   "Technotrend TT-connect CT-3650",
-			.warm_ids = { &ttusb2_table[3], NULL },
+			.warm_ids = { &ttusb2_table[TECHNOTREND_CONNECT_CT3650], NULL },
 		},
 	}
 };
diff --git a/include/media/dvb-usb-ids.h b/include/media/dvb-usb-ids.h
index ed6e37f23cbc..0fad68bfe6f9 100644
--- a/include/media/dvb-usb-ids.h
+++ b/include/media/dvb-usb-ids.h
@@ -312,8 +312,6 @@
 #define USB_PID_PCTV_2002E				0x025c
 #define USB_PID_PCTV_2002E_SE				0x025d
 #define USB_PID_PCTV_200E				0x020e
-#define USB_PID_PCTV_400E				0x020f
-#define USB_PID_PCTV_450E				0x0222
 #define USB_PID_PCTV_78E				0x025a
 #define USB_PID_PCTV_79E				0x0262
 #define USB_PID_PINNACLE_EXPRESSCARD_320CX		0x022e
@@ -329,6 +327,8 @@
 #define USB_PID_PINNACLE_PCTV74E			0x0246
 #define USB_PID_PINNACLE_PCTV801E			0x023a
 #define USB_PID_PINNACLE_PCTV801E_SE			0x023b
+#define USB_PID_PINNACLE_PCTV_400E			0x020f
+#define USB_PID_PINNACLE_PCTV_450E			0x0222
 #define USB_PID_PINNACLE_PCTV_452E			0x021f
 #define USB_PID_PINNACLE_PCTV_DUAL_DIVERSITY_DVB_T	0x0229
 #define USB_PID_PINNACLE_PCTV_DVB_T_FLASH		0x0228
-- 
2.35.1