diff options
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index a35b8c2f646..847fa1f82c3 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -23,6 +23,7 @@ #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/err.h> +#include <linux/iopoll.h> #include <linux/ioport.h> #include <dm.h> #include <generic-phy.h> @@ -587,7 +588,6 @@ static void dwc3_set_incr_burst_type(struct dwc3 *dwc) */ static int dwc3_core_init(struct dwc3 *dwc) { - unsigned long timeout; u32 hwparams4 = dwc->hwparams.hwparams4; u32 reg; int ret; @@ -610,15 +610,11 @@ static int dwc3_core_init(struct dwc3 *dwc) } /* issue device SoftReset too */ - timeout = 5000; dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST); - while (timeout--) { - reg = dwc3_readl(dwc->regs, DWC3_DCTL); - if (!(reg & DWC3_DCTL_CSFTRST)) - break; - }; - - if (!timeout) { + ret = read_poll_timeout(dwc3_readl, reg, + !(reg & DWC3_DCTL_CSFTRST), + 1, 5000, dwc->regs, DWC3_DCTL); + if (ret) { dev_err(dwc->dev, "Reset Timed Out\n"); ret = -ETIMEDOUT; goto err0; |