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[SCSI] usb: shuttle_usbat - convert to accessors and !use_sg code pat…
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…h removal

 - functions that received char* but where passed scatterlist* mostly
   were changed to receive void*
 - Use scsi data accessors and remove of !use_sg code path

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: Matthew Dharm <mdharm-scsi@one-eyed-alien.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Boaz Harrosh authored and James Bottomley committed Jan 12, 2008
1 parent 41c2497 commit 4776e99
Showing 1 changed file with 26 additions and 42 deletions.
68 changes: 26 additions & 42 deletions drivers/usb/storage/shuttle_usbat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -130,30 +130,30 @@ static int usbat_write(struct us_data *us,
* Convenience function to perform a bulk read
*/
static int usbat_bulk_read(struct us_data *us,
unsigned char *data,
void* buf,
unsigned int len,
int use_sg)
{
if (len == 0)
return USB_STOR_XFER_GOOD;

US_DEBUGP("usbat_bulk_read: len = %d\n", len);
return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, data, len, use_sg, NULL);
return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, buf, len, use_sg, NULL);
}

/*
* Convenience function to perform a bulk write
*/
static int usbat_bulk_write(struct us_data *us,
unsigned char *data,
void* buf,
unsigned int len,
int use_sg)
{
if (len == 0)
return USB_STOR_XFER_GOOD;

US_DEBUGP("usbat_bulk_write: len = %d\n", len);
return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, data, len, use_sg, NULL);
return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, buf, len, use_sg, NULL);
}

/*
Expand Down Expand Up @@ -314,7 +314,7 @@ static int usbat_wait_not_busy(struct us_data *us, int minutes)
* Read block data from the data register
*/
static int usbat_read_block(struct us_data *us,
unsigned char *content,
void* buf,
unsigned short len,
int use_sg)
{
Expand All @@ -337,7 +337,7 @@ static int usbat_read_block(struct us_data *us,
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;

result = usbat_bulk_read(us, content, len, use_sg);
result = usbat_bulk_read(us, buf, len, use_sg);
return (result == USB_STOR_XFER_GOOD ?
USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
}
Expand All @@ -347,7 +347,7 @@ static int usbat_read_block(struct us_data *us,
*/
static int usbat_write_block(struct us_data *us,
unsigned char access,
unsigned char *content,
void* buf,
unsigned short len,
int minutes,
int use_sg)
Expand All @@ -372,7 +372,7 @@ static int usbat_write_block(struct us_data *us,
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;

result = usbat_bulk_write(us, content, len, use_sg);
result = usbat_bulk_write(us, buf, len, use_sg);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;

Expand All @@ -392,7 +392,7 @@ static int usbat_hp8200e_rw_block_test(struct us_data *us,
unsigned char timeout,
unsigned char qualifier,
int direction,
unsigned char *content,
void *buf,
unsigned short len,
int use_sg,
int minutes)
Expand Down Expand Up @@ -472,7 +472,7 @@ static int usbat_hp8200e_rw_block_test(struct us_data *us,
}

result = usb_stor_bulk_transfer_sg(us,
pipe, content, len, use_sg, NULL);
pipe, buf, len, use_sg, NULL);

/*
* If we get a stall on the bulk download, we'll retry
Expand Down Expand Up @@ -606,7 +606,7 @@ static int usbat_multiple_write(struct us_data *us,
* other related details) are defined beforehand with _set_shuttle_features().
*/
static int usbat_read_blocks(struct us_data *us,
unsigned char *buffer,
void* buffer,
int len,
int use_sg)
{
Expand Down Expand Up @@ -648,7 +648,7 @@ static int usbat_read_blocks(struct us_data *us,
* other related details) are defined beforehand with _set_shuttle_features().
*/
static int usbat_write_blocks(struct us_data *us,
unsigned char *buffer,
void* buffer,
int len,
int use_sg)
{
Expand Down Expand Up @@ -1170,15 +1170,15 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,
US_DEBUGP("handle_read10: transfersize %d\n",
srb->transfersize);

if (srb->request_bufflen < 0x10000) {
if (scsi_bufflen(srb) < 0x10000) {

result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
registers, data, 19,
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
DMA_FROM_DEVICE,
srb->request_buffer,
srb->request_bufflen, srb->use_sg, 1);
scsi_sglist(srb),
scsi_bufflen(srb), scsi_sg_count(srb), 1);

return result;
}
Expand All @@ -1196,7 +1196,7 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,
len <<= 16;
len |= data[7+7];
US_DEBUGP("handle_read10: GPCMD_READ_CD: len %d\n", len);
srb->transfersize = srb->request_bufflen/len;
srb->transfersize = scsi_bufflen(srb)/len;
}

if (!srb->transfersize) {
Expand All @@ -1213,7 +1213,7 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,

len = (65535/srb->transfersize) * srb->transfersize;
US_DEBUGP("Max read is %d bytes\n", len);
len = min(len, srb->request_bufflen);
len = min(len, scsi_bufflen(srb));
buffer = kmalloc(len, GFP_NOIO);
if (buffer == NULL) /* bloody hell! */
return USB_STOR_TRANSPORT_FAILED;
Expand All @@ -1222,10 +1222,10 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,
sector |= short_pack(data[7+5], data[7+4]);
transferred = 0;

while (transferred != srb->request_bufflen) {
while (transferred != scsi_bufflen(srb)) {

if (len > srb->request_bufflen - transferred)
len = srb->request_bufflen - transferred;
if (len > scsi_bufflen(srb) - transferred)
len = scsi_bufflen(srb) - transferred;

data[3] = len&0xFF; /* (cylL) = expected length (L) */
data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
Expand Down Expand Up @@ -1261,7 +1261,7 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,
transferred += len;
sector += len / srb->transfersize;

} /* while transferred != srb->request_bufflen */
} /* while transferred != scsi_bufflen(srb) */

kfree(buffer);
return result;
Expand Down Expand Up @@ -1429,9 +1429,8 @@ static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
unsigned char data[32];
unsigned int len;
int i;
char string[64];

len = srb->request_bufflen;
len = scsi_bufflen(srb);

/* Send A0 (ATA PACKET COMMAND).
Note: I guess we're never going to get any of the ATA
Expand Down Expand Up @@ -1472,8 +1471,8 @@ static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
DMA_TO_DEVICE,
srb->request_buffer,
len, srb->use_sg, 10);
scsi_sglist(srb),
len, scsi_sg_count(srb), 10);

if (result == USB_STOR_TRANSPORT_GOOD) {
transferred += len;
Expand Down Expand Up @@ -1540,23 +1539,8 @@ static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
len = *status;


result = usbat_read_block(us, srb->request_buffer, len, srb->use_sg);

/* Debug-print the first 32 bytes of the transfer */

if (!srb->use_sg) {
string[0] = 0;
for (i=0; i<len && i<32; i++) {
sprintf(string+strlen(string), "%02X ",
((unsigned char *)srb->request_buffer)[i]);
if ((i%16)==15) {
US_DEBUGP("%s\n", string);
string[0] = 0;
}
}
if (string[0]!=0)
US_DEBUGP("%s\n", string);
}
result = usbat_read_block(us, scsi_sglist(srb), len,
scsi_sg_count(srb));
}

return result;
Expand Down

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