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staging: line6: drop CONFIG_LINE6_USB_DUMP_PCM

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The CONFIG_LINE6_USB_DUMP_PCM config option prints a hexdump of PCM
audio data as URBs are sent and received.  The usbmon feature should be
used instead of manually dumping PCM URBs.  There are a few advantages
to using usbmon:

 * Can be turned on/off at runtime
 * Provides full USB-level traffic
 * tcpdump and wireshark support for powerful analysis
 * No driver-specific code is required

This is the last user of line6_write_hexdump() so we drop it too.

Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stefan Hajnoczi 2013-01-19 09:59:00 +01:00 committed by Greg Kroah-Hartman
parent 25c97da8b9
commit 98115f1df3
5 changed files with 0 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/staging/line6/Kconfig
View File

@ -23,16 +23,6 @@ menuconfig LINE6_USB
if LINE6_USB
config LINE6_USB_DUMP_PCM
bool "dump PCM data"
default n
help
Say Y here to write PCM data sent to and received from Line6
devices to the syslog. This will produce a huge amount of
syslog data during playback and capture.
If unsure, say N.
config LINE6_USB_IMPULSE_RESPONSE
bool "measure impulse response"
default n

10
drivers/staging/line6/capture.c
View File

@ -216,16 +216,6 @@ static void audio_in_callback(struct urb *urb)
if (urb == line6pcm->urb_audio_in[index])
break;
#ifdef CONFIG_LINE6_USB_DUMP_PCM
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
struct usb_iso_packet_descriptor *fout =
&urb->iso_frame_desc[i];
line6_write_hexdump(line6pcm->line6, 'C',
urb->transfer_buffer + fout->offset,
fout->length);
}
#endif
spin_lock_irqsave(&line6pcm->lock_audio_in, flags);
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {

41
drivers/staging/line6/driver.c
View File

@ -135,47 +135,6 @@ static void line6_stop_listen(struct usb_line6 *line6)
usb_kill_urb(line6->urb_listen);
}
#ifdef CONFIG_LINE6_USB_DUMP_ANY
/*
Write hexdump to syslog.
*/
void line6_write_hexdump(struct usb_line6 *line6, char dir,
const unsigned char *buffer, int size)
{
static const int BYTES_PER_LINE = 8;
char hexdump[100];
char asc[BYTES_PER_LINE + 1];
int i, j;
for (i = 0; i < size; i += BYTES_PER_LINE) {
int hexdumpsize = sizeof(hexdump);
char *p = hexdump;
int n = min(size - i, BYTES_PER_LINE);
asc[n] = 0;
for (j = 0; j < BYTES_PER_LINE; ++j) {
int bytes;
if (j < n) {
unsigned char val = buffer[i + j];
bytes = snprintf(p, hexdumpsize, " %02X", val);
asc[j] = ((val >= 0x20)
&& (val < 0x7f)) ? val : '.';
} else
bytes = snprintf(p, hexdumpsize, " ");
if (bytes > hexdumpsize)
break; /* buffer overflow */
p += bytes;
hexdumpsize -= bytes;
}
dev_info(line6->ifcdev, "%c%04X:%s %s\n", dir, i, hexdump, asc);
}
}
#endif
/*
Send raw message in pieces of wMaxPacketSize bytes.
*/

9
drivers/staging/line6/driver.h
View File

@ -20,10 +20,6 @@
#define DRIVER_NAME "line6usb"
#if defined(CONFIG_LINE6_USB_DUMP_PCM)
#define CONFIG_LINE6_USB_DUMP_ANY
#endif
#define LINE6_TIMEOUT 1
#define LINE6_BUFSIZE_LISTEN 32
#define LINE6_MESSAGE_MAXLEN 256
@ -219,9 +215,4 @@ extern int line6_version_request_async(struct usb_line6 *line6);
extern int line6_write_data(struct usb_line6 *line6, int address, void *data,
size_t datalen);
#ifdef CONFIG_LINE6_USB_DUMP_ANY
extern void line6_write_hexdump(struct usb_line6 *line6, char dir,
const unsigned char *buffer, int size);
#endif
#endif

9
drivers/staging/line6/playback.c
View File

@ -264,15 +264,6 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
}
#endif
}
#ifdef CONFIG_LINE6_USB_DUMP_PCM
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
struct usb_iso_packet_descriptor *fout =
&urb_out->iso_frame_desc[i];
line6_write_hexdump(line6pcm->line6, 'P',
urb_out->transfer_buffer + fout->offset,
fout->length);
}
#endif
ret = usb_submit_urb(urb_out, GFP_ATOMIC);