diff options
| author | Malcolm Priestley <tvboxspy@gmail.com> | 2020-05-16 13:44:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-19 17:17:18 +0300 |
| commit | 9786f8b2f79c61afb518c205663a78ecfcab0c64 (patch) | |
| tree | 35a55e07f9124dea7bad45810e16b735fe1c8211 /drivers/staging/vt6656 | |
| parent | 9deca1e3e2b682a2b1e40f8970f36e1703e27bfc (diff) | |
| download | linux-9786f8b2f79c61afb518c205663a78ecfcab0c64.tar.xz | |
staging: vt6656: vnt_usb_send_context remove variable data.
A limit is also placed in vnt_tx_context of MAX_TOTAL_SIZE_WITH_ALL_HEADERS
limiting size.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/9416e1a8-bd72-ffb1-5366-78361d053907@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/vt6656')
| -rw-r--r-- | drivers/staging/vt6656/device.h | 1 | ||||
| -rw-r--r-- | drivers/staging/vt6656/rxtx.c | 3 | ||||
| -rw-r--r-- | drivers/staging/vt6656/usbpipe.c | 5 |
3 files changed, 5 insertions, 4 deletions
diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h index 074b98dfac91..08294b21c4e9 100644 --- a/drivers/staging/vt6656/device.h +++ b/drivers/staging/vt6656/device.h @@ -250,7 +250,6 @@ struct vnt_usb_send_context { u8 pkt_type; u8 need_ack; bool in_use; - unsigned char data[MAX_TOTAL_SIZE_WITH_ALL_HEADERS]; }; /* diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c index cf194c95df03..8f9904c8045c 100644 --- a/drivers/staging/vt6656/rxtx.c +++ b/drivers/staging/vt6656/rxtx.c @@ -73,9 +73,6 @@ static struct vnt_usb_send_context context = priv->tx_context[ii]; if (!context->in_use) { context->in_use = true; - memset(context->data, 0, - MAX_TOTAL_SIZE_WITH_ALL_HEADERS); - context->hdr = NULL; return context; diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c index 904645fa0eb0..43f1ef32a9ce 100644 --- a/drivers/staging/vt6656/usbpipe.c +++ b/drivers/staging/vt6656/usbpipe.c @@ -463,6 +463,11 @@ int vnt_tx_context(struct vnt_private *priv, return -ENODEV; } + if (context->buf_len > MAX_TOTAL_SIZE_WITH_ALL_HEADERS) { + context->in_use = false; + return -E2BIG; + } + usb_fill_bulk_urb(urb, priv->usb, usb_sndbulkpipe(priv->usb, 3), |