diff options
| author | Jens Axboe <axboe@fb.com> | 2014-09-11 19:31:18 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-09-11 19:31:18 +0400 |
| commit | b207892b061da7608878e273ae22ba9bf9be264b (patch) | |
| tree | 51daa46b89b83cad422941f52110b19571b85b79 /drivers/usb/serial/whiteheat.c | |
| parent | 018a17bdc8658ad448497c84d4ba21b6985820ec (diff) | |
| parent | a516440542afcb9647f88d12c35640baf02d07ea (diff) | |
| download | linux-b207892b061da7608878e273ae22ba9bf9be264b.tar.xz | |
Merge branch 'for-linus' into for-3.18/core
A bit of churn on the for-linus side that would be nice to have
in the core bits for 3.18, so pull it in to catch us up and make
forward progress easier.
Signed-off-by: Jens Axboe <axboe@fb.com>
Conflicts:
block/scsi_ioctl.c
Diffstat (limited to 'drivers/usb/serial/whiteheat.c')
| -rw-r--r-- | drivers/usb/serial/whiteheat.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index e62f2dff8b7d..6c3734d2b45a 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -514,6 +514,10 @@ static void command_port_read_callback(struct urb *urb) dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__); return; } + if (!urb->actual_length) { + dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__); + return; + } if (status) { dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status); if (status != -ENOENT) @@ -534,7 +538,8 @@ static void command_port_read_callback(struct urb *urb) /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ dev_dbg(&urb->dev->dev, "%s - event received\n", __func__); - } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { + } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) && + (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) { memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |