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Offset libusb reads/writes by length written as well in ztex.

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This commit is contained in:
Con Kolivas 2012-08-16 22:30:06 +10:00
parent 280539bf98
commit 567751410e
1 changed files with 12 additions and 10 deletions
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22
libztex.c
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@ -607,16 +607,17 @@ int libztex_scanDevices(struct libztex_dev_list*** devs_p)
int libztex_sendHashData(struct libztex_device *ztex, unsigned char *sendbuf)
{
int cnt, ret;
int cnt, ret, len;
if (ztex == NULL || ztex->hndl == NULL)
return 0;
ret = 44;
ret = 44; len = 0;
while (ret > 0) {
cnt = libusb_control_transfer(ztex->hndl, 0x40, 0x80, 0, 0, sendbuf, ret, 1000);
if (cnt >= 0)
cnt = libusb_control_transfer(ztex->hndl, 0x40, 0x80, 0, 0, sendbuf + len, ret, 1000);
if (cnt >= 0) {
ret -= cnt;
else
len += cnt;
} else
if (cnt != LIBUSB_ERROR_TIMEOUT)
break;
}
@ -628,8 +629,8 @@ int libztex_sendHashData(struct libztex_device *ztex, unsigned char *sendbuf)
int libztex_readHashData(struct libztex_device *ztex, struct libztex_hash_data nonces[]) {
int bufsize = 12 + ztex->extraSolutions * 4;
int cnt, i, j, ret, len;
unsigned char *rbuf;
int cnt, i, j, ret;
if (ztex->hndl == NULL)
return 0;
@ -639,12 +640,13 @@ int libztex_readHashData(struct libztex_device *ztex, struct libztex_hash_data n
applog(LOG_ERR, "%s: Failed to allocate memory for reading nonces", ztex->repr);
return 0;
}
ret = bufsize * ztex->numNonces;
ret = bufsize * ztex->numNonces; len = 0;
while (ret > 0) {
cnt = libusb_control_transfer(ztex->hndl, 0xc0, 0x81, 0, 0, rbuf, ret, 1000);
if (cnt >= 0)
cnt = libusb_control_transfer(ztex->hndl, 0xc0, 0x81, 0, 0, rbuf + len, ret, 1000);
if (cnt >= 0) {
ret -= cnt;
else
len += cnt;
} else
if (cnt != LIBUSB_ERROR_TIMEOUT)
break;
}