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FROMGIT: usb: dwc3: gadget: increase tx fifo size for ss isoc endpoints

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Improve performance of isoc transfers in superspeed by increasing the
number of possible endpoints available, matching that of what was
configured for bulk transfers.

Signed-off-by: Dan Vacura <w36195@motorola.com>
Link: https://lore.kernel.org/r/20220420183338.445622-1-w36195@motorola.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 229140375
(cherry picked from commit 6a7c7df993
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next)
Change-Id: Iaa105cd98b0f4de3450bb5f6b10df67ed20a8336
Signed-off-by: Dan Vacura <w36195@motorola.com>
This commit is contained in:
Dan Vacura 2022-04-20 13:33:38 -05:00
commit 3736ae703b
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/dwc3/gadget.c
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@ -769,7 +769,8 @@ static int dwc3_gadget_resize_tx_fifos(struct dwc3_ep *dep)
num_fifos = 3;
if (dep->endpoint.maxburst > 6 &&
usb_endpoint_xfer_bulk(dep->endpoint.desc) && DWC3_IP_IS(DWC31))
(usb_endpoint_xfer_bulk(dep->endpoint.desc) ||
usb_endpoint_xfer_isoc(dep->endpoint.desc)) && DWC3_IP_IS(DWC31))
num_fifos = dwc->tx_fifo_resize_max_num;
/* FIFO size for a single buffer */