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path: root/drivers/usb/class/usbtmc.c
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Diffstat (limited to 'drivers/usb/class/usbtmc.c')
-rw-r--r--drivers/usb/class/usbtmc.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 65965587c812..619cc9975209 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -562,10 +562,16 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf,
n_bytes = roundup(12 + this_part, 4);
memset(buffer + 12 + this_part, 0, n_bytes - (12 + this_part));
- retval = usb_bulk_msg(data->usb_dev,
- usb_sndbulkpipe(data->usb_dev,
- data->bulk_out),
- buffer, n_bytes, &actual, USBTMC_TIMEOUT);
+ do {
+ retval = usb_bulk_msg(data->usb_dev,
+ usb_sndbulkpipe(data->usb_dev,
+ data->bulk_out),
+ buffer, n_bytes,
+ &actual, USBTMC_TIMEOUT);
+ if (retval != 0)
+ break;
+ n_bytes -= actual;
+ } while (n_bytes);
data->bTag_last_write = data->bTag;
data->bTag++;
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