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usb: dwc2: host: don't clear hprt0 status bits when exiting hibernation

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When entering hibernation hprt0 must be read using dwc2_read_hprt0().
Otherwise, any set hprt0 status bits will be cleared when restoring
hprt0 on exit from hibernation.

Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Gregory Herrero 2015-09-22 15:16:37 +02:00 • committed by Felipe Balbi
parent 70f3a9caa1
commit cc047ce4be
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc2/core.c
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@ -78,7 +78,7 @@ static int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg)
for (i = 0; i < hsotg->core_params->host_channels; ++i)
hr->hcintmsk[i] = dwc2_readl(hsotg->regs + HCINTMSK(i));
hr->hprt0 = dwc2_readl(hsotg->regs + HPRT0);
hr->hprt0 = dwc2_read_hprt0(hsotg);
hr->hfir = dwc2_readl(hsotg->regs + HFIR);
hr->valid = true;