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staging: vt6656: [BUG] Fix for TX USB resets from vendors driver. 

This fixes resets on heavy TX data traffic.

Vendor driver
VT6656_Linux_src_v1.21.03_x86_11.04.zip
http://www.viaembedded.com/servlet/downloadSvl?id=1890&download_file_id=14704
This is GPL-licensed code.

original code
BBbVT3184Init
...
//2007-0725, RobertChang add, Enable Squelch detect reset option(SQ_RST_Opt), USB (register4, bit1)
CONTROLnsRequestIn(pDevice,
                                 MESSAGE_TYPE_READ,
                                 (WORD)0x600+4,     // USB's Reg4's bit1
                                 MESSAGE_REQUEST_MEM,
                                 1,
                                 (PBYTE) &byData);
byData = byData|2 ;
CONTROLnsRequestOut(pDevice,
                              MESSAGE_TYPE_WRITE,
                              (WORD)0x600+4,     // USB's Reg4's bit1
                              MESSAGE_REQUEST_MEM,
                              1,
                              (PBYTE) &byData);

return TRUE;//ntStatus;
....

A back port patch is needed for kernels less than 3.10.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: stable@vger.kernel.org # v3.10+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Malcolm Priestley 2013-11-07 21:49:04 +00:00 committed by Greg Kroah-Hartman
parent 6330f9cf34
commit 9df682927c
2 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/staging/vt6656/baseband.c
View File

@ -939,6 +939,7 @@ int BBbVT3184Init(struct vnt_private *pDevice)
u8 * pbyAgc;
u16 wLengthAgc;
u8 abyArray[256];
u8 data;
ntStatus = CONTROLnsRequestIn(pDevice,
MESSAGE_TYPE_READ,
@ -1104,6 +1105,16 @@ else {
ControlvWriteByte(pDevice,MESSAGE_REQUEST_BBREG,0x0D,0x01);
RFbRFTableDownload(pDevice);
/* Fix for TX USB resets from vendors driver */
CONTROLnsRequestIn(pDevice, MESSAGE_TYPE_READ, USB_REG4,
MESSAGE_REQUEST_MEM, sizeof(data), &data);
data |= 0x2;
CONTROLnsRequestOut(pDevice, MESSAGE_TYPE_WRITE, USB_REG4,
MESSAGE_REQUEST_MEM, sizeof(data), &data);
return true;//ntStatus;
}

2
drivers/staging/vt6656/rndis.h
View File

@ -66,6 +66,8 @@
#define VIAUSB20_PACKET_HEADER 0x04
#define USB_REG4 0x604
typedef struct _CMD_MESSAGE
{
u8 byData[256];