diff options
| author | Allen Martin <amartin@nvidia.com> | 2013-07-31 16:10:45 -0700 |
|---|---|---|
| committer | Allen Martin <amartin@nvidia.com> | 2013-09-20 13:02:30 -0700 |
| commit | 18ff730d529ae9060921693a85a3491794c2c8f9 (patch) | |
| tree | e50b56d1f906c02c43d3a05cc21e87c3361210ec | |
| parent | da5d86f31fa39deddd178e3814baf60c06a0ae2c (diff) | |
| download | tegrarcm-18ff730d529ae9060921693a85a3491794c2c8f9.tar.gz | |
tegrarcm: Add timeout to USB xfers
This prevents tegrarcm from just hanging in the event that the target
gets in some bad state and stops responding to USB (like downloading a
bad BCT). Set default timeout to 1s which should be plenty long
enough for the max xfer size of 4096 bytes.
Signed-off-by: Allen Martin <amartin@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
| -rw-r--r-- | src/usb.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -34,6 +34,9 @@ #include "usb.h" #include "debug.h" +// USB xfer timeout in ms +#define USB_TIMEOUT 1000 + #define USB_XFER_MAX 4096 // @@ -225,7 +228,7 @@ int usb_write(usb_device_t *usb, uint8_t *buf, int len) while (len) { chunk_size = MIN(len, USB_XFER_MAX); ret = libusb_bulk_transfer(usb->handle, usb->endpt_out, buf, - chunk_size, &actual_chunk, 0); + chunk_size, &actual_chunk, USB_TIMEOUT); if (ret != LIBUSB_SUCCESS) { dprintf("write failure: %d\n", ret); return EIO; @@ -252,7 +255,7 @@ int usb_read(usb_device_t *usb, uint8_t *buf, int len, int *actual_len) while (len) { chunk_size = MIN(len, USB_XFER_MAX); ret = libusb_bulk_transfer(usb->handle, usb->endpt_in, buf, - chunk_size, &actual_chunk, 0); + chunk_size, &actual_chunk, USB_TIMEOUT); if (ret != LIBUSB_SUCCESS) { dprintf("read failure: %d\n", ret); return EIO; |