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| author | Linux Build Service Account <lnxbuild@quicinc.com> | 2017-08-24 06:13:55 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-08-24 06:13:55 -0700 |
| commit | 9626826f5b674defe76a50e6eee7add6daf3da80 (patch) | |
| tree | 51cf24caa3de114d03ac727c7eee628c8e98bf44 /drivers/usb/dwc3 | |
| parent | c8e37b5935c42a8dc17d88dc98679333882ae697 (diff) | |
| parent | e9ee6bea1eb88e73bed98adadda314998103b424 (diff) | |
Merge "dwc3-msm: Add delay between consecutive register reads in while loop"
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-msm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/dwc3-msm.c b/drivers/usb/dwc3/dwc3-msm.c index c5fc77eae894..5ad68df298cd 100644 --- a/drivers/usb/dwc3/dwc3-msm.c +++ b/drivers/usb/dwc3/dwc3-msm.c @@ -1239,7 +1239,7 @@ static void gsi_set_clear_dbell(struct usb_ep *ep, */ static bool gsi_check_ready_to_suspend(struct usb_ep *ep, bool f_suspend) { - u32 timeout = 1500; + u32 timeout = 500; u32 reg = 0; struct dwc3_ep *dep = to_dwc3_ep(ep); struct dwc3 *dwc = dep->dwc; @@ -1252,6 +1252,7 @@ static bool gsi_check_ready_to_suspend(struct usb_ep *ep, bool f_suspend) "Unable to suspend GSI ch. WR_CTRL_STATE != 0\n"); return false; } + usleep_range(20, 22); } /* Check for U3 only if we are not handling Function Suspend */ if (!f_suspend) { @@ -1933,6 +1934,7 @@ static int dwc3_msm_prepare_suspend(struct dwc3_msm *mdwc) reg = dwc3_msm_read_reg(mdwc->base, PWR_EVNT_IRQ_STAT_REG); if (reg & PWR_EVNT_LPM_IN_L2_MASK) break; + usleep_range(20, 30); } if (!(reg & PWR_EVNT_LPM_IN_L2_MASK)) dev_err(mdwc->dev, "could not transition HS PHY to L2\n"); |