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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-27 16:34:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-27 16:34:40 +0200 |
| commit | ae9a6149884e04b3460bd9d7ffe29c5ec8d223d8 (patch) | |
| tree | 373e19c07802ce43862f4a37a141f628bca0a401 /drivers/usb/cdns3/cdns3-gadget.c | |
| parent | 8217f07a50236779880f13e87f99224cd9117f83 (diff) | |
| parent | 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 (diff) | |
| download | lwn-ae9a6149884e04b3460bd9d7ffe29c5ec8d223d8.tar.gz lwn-ae9a6149884e04b3460bd9d7ffe29c5ec8d223d8.zip | |
Merge 5.15-rc3 into usb-next
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-gadget.c')
| -rw-r--r-- | drivers/usb/cdns3/cdns3-gadget.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c index 5d8c982019af..1f3b4a142212 100644 --- a/drivers/usb/cdns3/cdns3-gadget.c +++ b/drivers/usb/cdns3/cdns3-gadget.c @@ -1100,6 +1100,19 @@ static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep, return 0; } +static void cdns3_rearm_drdy_if_needed(struct cdns3_endpoint *priv_ep) +{ + struct cdns3_device *priv_dev = priv_ep->cdns3_dev; + + if (priv_dev->dev_ver < DEV_VER_V3) + return; + + if (readl(&priv_dev->regs->ep_sts) & EP_STS_TRBERR) { + writel(EP_STS_TRBERR, &priv_dev->regs->ep_sts); + writel(EP_CMD_DRDY, &priv_dev->regs->ep_cmd); + } +} + /** * cdns3_ep_run_transfer - start transfer on no-default endpoint hardware * @priv_ep: endpoint object @@ -1351,6 +1364,7 @@ static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, /*clearing TRBERR and EP_STS_DESCMIS before seting DRDY*/ writel(EP_STS_TRBERR | EP_STS_DESCMIS, &priv_dev->regs->ep_sts); writel(EP_CMD_DRDY, &priv_dev->regs->ep_cmd); + cdns3_rearm_drdy_if_needed(priv_ep); trace_cdns3_doorbell_epx(priv_ep->name, readl(&priv_dev->regs->ep_traddr)); } |