Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Chunfeng Yun <> | Subject | [PATCH] usb: devio: update max count of DPs per interval for ISOC | Date | Fri, 28 Dec 2018 18:27:44 +0800 |
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The host shall be able to accept and send up to 96 DPs for devices operating at Gen 2 speed.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- drivers/usb/core/devio.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index a75bc0b8a50f..82c16210e34c 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1564,12 +1564,10 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb } for (totlen = u = 0; u < number_of_packets; u++) { /* - * arbitrary limit need for USB 3.0 - * bMaxBurst (0~15 allowed, 1~16 packets) - * bmAttributes (bit 1:0, mult 0~2, 1~3 packets) - * sizemax: 1024 * 16 * 3 = 49152 + * arbitrary limit need for USB 3.1 Gen2 + * sizemax: 96 DPs at SSP, 96 * 1024 = 98304 */ - if (isopkt[u].length > 49152) { + if (isopkt[u].length > 98304) { ret = -EINVAL; goto error; } -- 2.19.1
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