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usb: dwc3: Increase DWC3 controller halt timeout

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[ Upstream commit 461ee467507cb98a348fa91ff8460908bb0ea423 ]

Since EP0 transactions need to be completed before the controller halt
sequence is finished, this may take some time depending on the host and the
enabled functions.  Increase the controller halt timeout, so that we give
the controller sufficient time to handle EP0 transfers.

Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20220901193625.8727-4-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: d3a8c28426fc ("usb: dwc3: Fix timeout issue during controller enter/exit from halt state")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wesley Cheng 2022-09-01 12:36:23 -07:00 • committed by Greg Kroah-Hartman
commit 935e842f98
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/dwc3/gadget.c
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@ -1966,7 +1966,7 @@ static void dwc3_stop_active_transfers(struct dwc3 *dwc)
static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
{
u32 reg;
u32 timeout = 500;
u32 timeout = 2000;
if (pm_runtime_suspended(dwc->dev))
return 0;
@ -1998,6 +1998,7 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
do {
usleep_range(1000, 2000);
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
reg &= DWC3_DSTS_DEVCTRLHLT;
} while (--timeout && !(!is_on ^ !reg));