X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/blobdiff_plain/b5e57d268fe86cf58116c03166d45c130280dfb6..018f85faaef11f00f1f7736ccfe4d8f2fc9671ab:/hmcfgusb.c diff --git a/hmcfgusb.c b/hmcfgusb.c index 90d741f..e3cde0f 100644 --- a/hmcfgusb.c +++ b/hmcfgusb.c @@ -58,6 +58,7 @@ static int quit = 0; static int debug = 0; +static int libusb_initialized = 0; /* Not in all libusb-1.0 versions, so we have to roll our own :-( */ static char * usb_strerror(int e) @@ -124,26 +125,33 @@ static libusb_device_handle *hmcfgusb_find(int vid, int pid) { err = libusb_open(dev, &devh); if (err) { fprintf(stderr, "Can't open device: %s\n", usb_strerror(err)); + libusb_free_device_list(list, 1); return NULL; } err = libusb_detach_kernel_driver(devh, INTERFACE); if ((err != 0) && (err != LIBUSB_ERROR_NOT_FOUND)) { fprintf(stderr, "Can't detach kernel driver: %s\n", usb_strerror(err)); + libusb_close(devh); + libusb_free_device_list(list, 1); return NULL; } err = libusb_claim_interface(devh, INTERFACE); if ((err != 0)) { fprintf(stderr, "Can't claim interface: %s\n", usb_strerror(err)); + libusb_close(devh); + libusb_free_device_list(list, 1); return NULL; } + libusb_free_device_list(list, 0); return devh; } } + libusb_free_device_list(list, 1); return NULL; } @@ -223,7 +231,7 @@ static struct libusb_transfer *hmcfgusb_prepare_int(libusb_device_handle *devh, libusb_fill_interrupt_transfer(transfer, devh, EP_IN, data_buf, in_size, cb, data, USB_TIMEOUT); - transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK | LIBUSB_TRANSFER_FREE_BUFFER; + transfer->flags = LIBUSB_TRANSFER_FREE_BUFFER; err = libusb_submit_transfer(transfer); if (err != 0) { @@ -250,12 +258,16 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer) if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { if (transfer->status != LIBUSB_TRANSFER_TIMED_OUT) { - fprintf(stderr, "Interrupt transfer not completed: %s!\n", usb_strerror(transfer->status)); + if (transfer->status != LIBUSB_TRANSFER_CANCELLED) + fprintf(stderr, "Interrupt transfer not completed: %s!\n", usb_strerror(transfer->status)); + quit = EIO; - if (cb_data && cb_data->dev && cb_data->dev->transfer) { - libusb_free_transfer(cb_data->dev->transfer); - cb_data->dev->transfer = NULL; + libusb_free_transfer(transfer); + if (cb_data) { + if (cb_data->dev && cb_data->dev->transfer) { + cb_data->dev->transfer = NULL; + } free(cb_data); } return; @@ -268,8 +280,8 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer) if (!cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data)) { quit = EIO; + libusb_free_transfer(transfer); if (cb_data && cb_data->dev && cb_data->dev->transfer) { - libusb_free_transfer(cb_data->dev->transfer); cb_data->dev->transfer = NULL; free(cb_data); } @@ -285,8 +297,11 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer) if (err != 0) { fprintf(stderr, "Can't re-submit transfer: %s\n", usb_strerror(err)); libusb_free_transfer(transfer); - cb_data->dev->transfer = NULL; - free(cb_data); + if (cb_data) { + if (cb_data->dev) + cb_data->dev->transfer = NULL; + free(cb_data); + } } } @@ -300,18 +315,23 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) int err; int i; - err = libusb_init(NULL); - if (err != 0) { - fprintf(stderr, "Can't initialize libusb: %s\n", usb_strerror(err)); - return NULL; + if (!libusb_initialized) { + err = libusb_init(NULL); + if (err != 0) { + fprintf(stderr, "Can't initialize libusb: %s\n", usb_strerror(err)); + return NULL; + } } + libusb_initialized = 1; devh = hmcfgusb_find(ID_VENDOR, ID_PRODUCT); if (!devh) { devh = hmcfgusb_find(ID_VENDOR, ID_PRODUCT_BL); if (!devh) { fprintf(stderr, "Can't find/open hmcfgusb!\n"); - libusb_exit(NULL); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif return NULL; } bootloader = 1; @@ -321,7 +341,9 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) if (!dev) { perror("Can't allocate memory for hmcfgusb_dev"); libusb_close(devh); - libusb_exit(NULL); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif return NULL; } @@ -335,7 +357,9 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) perror("Can't allocate memory for hmcfgusb_cb_data"); free(dev); libusb_close(devh); - libusb_exit(NULL); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif return NULL; } @@ -345,28 +369,30 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) cb_data->cb = cb; cb_data->data = data; - /* Bootloader can only say ack/nack/done */ - if (dev->bootloader) - dev->transfer = hmcfgusb_prepare_int(devh, hmcfgusb_interrupt, cb_data, 1); - else - dev->transfer = hmcfgusb_prepare_int(devh, hmcfgusb_interrupt, cb_data, ASYNC_SIZE); + dev->transfer = hmcfgusb_prepare_int(devh, hmcfgusb_interrupt, cb_data, ASYNC_SIZE); if (!dev->transfer) { fprintf(stderr, "Can't prepare async device io!\n"); free(dev); free(cb_data); libusb_close(devh); - libusb_exit(NULL); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif return NULL; } usb_pfd = libusb_get_pollfds(NULL); if (!usb_pfd) { fprintf(stderr, "Can't get FDset from libusb!\n"); + libusb_cancel_transfer(dev->transfer); + libusb_handle_events(NULL); free(dev); free(cb_data); libusb_close(devh); - libusb_exit(NULL); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif return NULL; } @@ -377,10 +403,14 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) dev->pfd = malloc(dev->n_usb_pfd * sizeof(struct pollfd)); if (!dev->pfd) { perror("Can't allocate memory for poll-fds"); + libusb_cancel_transfer(dev->transfer); + libusb_handle_events(NULL); free(dev); free(cb_data); libusb_close(devh); - libusb_exit(NULL); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif return NULL; } @@ -437,13 +467,11 @@ int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) return -1; } else if (err == 0) { /* No pending timeout or a sane platform */ - tv.tv_sec = timeout; } else { if ((tv.tv_sec == 0) && (tv.tv_usec == 0)) { usb_event = 1; - } else if (tv.tv_sec > timeout) { - tv.tv_sec = timeout; - tv.tv_usec = 0; + } else if ((tv.tv_sec * 1000) < timeout) { + timeout = tv.tv_sec * 1000; } } @@ -452,7 +480,7 @@ int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) dev->pfd[i].revents = 0; } - n = poll(dev->pfd, dev->n_pfd, tv.tv_sec * 1000); + n = poll(dev->pfd, dev->n_pfd, timeout); if (n < 0) { perror("poll"); errno = 0; @@ -535,6 +563,7 @@ void hmcfgusb_close(struct hmcfgusb_dev *dev) if (dev->transfer) { libusb_cancel_transfer(dev->transfer); + libusb_handle_events(NULL); } err = libusb_release_interface(dev->usb_devh, INTERFACE); @@ -543,10 +572,19 @@ void hmcfgusb_close(struct hmcfgusb_dev *dev) } libusb_close(dev->usb_devh); +#ifdef NEED_LIBUSB_EXIT + hmcfgusb_exit(); +#endif free(dev->pfd); free(dev); +} - libusb_exit(NULL); +void hmcfgusb_exit(void) +{ + if (libusb_initialized) { + libusb_exit(NULL); + libusb_initialized = 0; + } } void hmcfgusb_set_debug(int d)