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Check for valid usbdev in _usb_read in case the device has been unplugged.

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This commit is contained in:
ckolivas 2013-05-29 16:29:49 +10:00
parent 99b117be47
commit f3093803d1
1 changed files with 6 additions and 1 deletions
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7
usbutils.c
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@ -2011,7 +2011,7 @@ static void rejected_inc(struct cgpu_info *cgpu, uint32_t mode)
int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *processed, unsigned int timeout, const char *end, __maybe_unused enum usb_cmds cmd, bool readonce)
{
struct cg_usb_device *usbdev = cgpu->usbdev;
bool ftdi = (usbdev->usb_type == USB_TYPE_FTDI);
bool ftdi;
#if DO_USB_STATS
struct timeval tv_start;
#endif
@ -2027,6 +2027,11 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
unsigned char usbbuf[USB_MAX_READ+4], *ptr;
size_t usbbufread;
if (unlikely(!usbdev))
return LIBUSB_ERROR_NO_DEVICE;
ftdi = (usbdev->usb_type == USB_TYPE_FTDI);
USBDEBUG("USB debug: _usb_read(%s (nodev=%s),ep=%d,buf=%p,bufsiz=%zu,proc=%p,timeout=%u,end=%s,cmd=%s,ftdi=%s,readonce=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), ep, buf, bufsiz, processed, timeout, end ? (char *)str_text((char *)end) : "NULL", usb_cmdname(cmd), bool_str(ftdi), bool_str(readonce));
if (bufsiz > USB_MAX_READ)