linux-kernel - [PATCH] staging: line6: drop unused line6

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Date:	Mon, 15 Oct 2012 20:26:46 +0200
From:	Stefan Hajnoczi <stefanha@...hat.com>
To:	Markus Grabner <grabner@....tugraz.at>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, <linux-kernel@...r.kernel.org>,
	Stefan Hajnoczi <stefanha@...hat.com>
Subject: [PATCH] staging: line6: drop unused line6_devices[] array

There is no reason to limit the number of line6 devices.  Drop the
static array.

Signed-off-by: Stefan Hajnoczi <stefanha@...hat.com>
---
 drivers/staging/line6/driver.c | 20 +-------------------
 drivers/staging/line6/driver.h |  2 --
 2 files changed, 1 insertion(+), 21 deletions(-)

diff --git a/drivers/staging/line6/driver.c b/drivers/staging/line6/driver.c
index b8358ca..ac11a3b 100644
--- a/drivers/staging/line6/driver.c
+++ b/drivers/staging/line6/driver.c
@@ -96,8 +96,6 @@ static const char line6_request_version[] = {
 	0xf0, 0x7e, 0x7f, 0x06, 0x01, 0xf7
 };
 
-struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
-
 /**
 	 Class for asynchronous messages.
 */
@@ -740,7 +738,6 @@ static int line6_probe(struct usb_interface *interface,
 	struct usb_device *usbdev;
 	struct usb_line6 *line6;
 	const struct line6_properties *properties;
-	int devnum;
 	int interface_number, alternate = 0;
 	int product;
 	int size = 0;
@@ -774,16 +771,6 @@ static int line6_probe(struct usb_interface *interface,
 		goto err_put;
 	}
 
-	/* find free slot in device table: */
-	for (devnum = 0; devnum < LINE6_MAX_DEVICES; ++devnum)
-		if (line6_devices[devnum] == NULL)
-			break;
-
-	if (devnum == LINE6_MAX_DEVICES) {
-		ret = -ENODEV;
-		goto err_put;
-	}
-
 	/* initialize device info: */
 	properties = &line6_properties_table[devtype];
 	dev_info(&interface->dev, "Line6 %s found\n", properties->name);
@@ -1112,7 +1099,6 @@ static int line6_probe(struct usb_interface *interface,
 
 	dev_info(&interface->dev, "Line6 %s now attached\n",
 		 line6->properties->name);
-	line6_devices[devnum] = line6;
 
 	switch (product) {
 	case LINE6_DEVID_PODX3:
@@ -1141,7 +1127,7 @@ static void line6_disconnect(struct usb_interface *interface)
 {
 	struct usb_line6 *line6;
 	struct usb_device *usbdev;
-	int interface_number, i;
+	int interface_number;
 
 	if (interface == NULL)
 		return;
@@ -1214,10 +1200,6 @@ static void line6_disconnect(struct usb_interface *interface)
 
 		dev_info(&interface->dev, "Line6 %s now disconnected\n",
 			 line6->properties->name);
-
-		for (i = LINE6_MAX_DEVICES; i--;)
-			if (line6_devices[i] == line6)
-				line6_devices[i] = NULL;
 	}
 
 	line6_destruct(interface);
diff --git a/drivers/staging/line6/driver.h b/drivers/staging/line6/driver.h
index a3029eb..35246cf 100644
--- a/drivers/staging/line6/driver.h
+++ b/drivers/staging/line6/driver.h
@@ -25,7 +25,6 @@
 #endif
 
 #define LINE6_TIMEOUT 1
-#define LINE6_MAX_DEVICES 8
 #define LINE6_BUFSIZE_LISTEN 32
 #define LINE6_MESSAGE_MAXLEN 256
 
@@ -78,7 +77,6 @@ do {					\
 } while (0)
 
 extern const unsigned char line6_midi_id[3];
-extern struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
 
 static const int SYSEX_DATA_OFS = sizeof(line6_midi_id) + 3;
 static const int SYSEX_EXTRA_SIZE = sizeof(line6_midi_id) + 4;
-- 
1.7.11.7

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