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Why are we reading extra again in usb read when buffering is enabled? Don't do that.

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This commit is contained in:
Con Kolivas 2013-11-03 20:24:34 +11:00
parent 38d9c24e56
commit ea12210032
1 changed files with 8 additions and 18 deletions
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26
usbutils.c
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@ -2542,15 +2542,10 @@ int _usb_read(struct cgpu_info *cgpu, int intinfo, int epinfo, char *buf, size_t
max = ((double)timeout) / 1000.0;
cgtime(&read_start);
while (bufleft > 0) {
// TODO: use (USB_MAX_READ - tot) always?
if (usbdev->buffer)
usbbufread = USB_MAX_READ - tot;
else {
if (ftdi)
usbbufread = bufleft + 2;
else
usbbufread = bufleft;
}
if (ftdi)
usbbufread = bufleft + 2;
else
usbbufread = bufleft;
got = 0;
err = usb_bulk_transfer(usbdev->handle, intinfo, epinfo,
@ -2628,15 +2623,10 @@ int _usb_read(struct cgpu_info *cgpu, int intinfo, int epinfo, char *buf, size_t
max = ((double)timeout) / 1000.0;
cgtime(&read_start);
while (bufleft > 0) {
// TODO: use (USB_MAX_READ - tot) always?
if (usbdev->buffer)
usbbufread = USB_MAX_READ - tot;
else {
if (ftdi)
usbbufread = bufleft + 2;
else
usbbufread = bufleft;
}
if (ftdi)
usbbufread = bufleft + 2;
else
usbbufread = bufleft;
got = 0;
err = usb_bulk_transfer(usbdev->handle, intinfo, epinfo,
ptr, usbbufread, &got, timeout,