change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/usb/isp1760/isp1760-hcd.c
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@@ -22,6 +22,7 @@
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 #include <linux/debugfs.h>
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 #include <linux/uaccess.h>
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 #include <linux/io.h>
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+#include <linux/iopoll.h>
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 #include <linux/mm.h>
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 #include <linux/timer.h>
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 #include <asm/unaligned.h>
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@@ -380,18 +381,15 @@
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 		      u32 mask, u32 done, int usec)
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 {
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 	u32 result;
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+	int ret;
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-	do {
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-		result = reg_read32(hcd->regs, reg);
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-		if (result == ~0)
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-			return -ENODEV;
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-		result &= mask;
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-		if (result == done)
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-			return 0;
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-		udelay(1);
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-		usec--;
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-	} while (usec > 0);
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-	return -ETIMEDOUT;
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+	ret = readl_poll_timeout_atomic(hcd->regs + reg, result,
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+					((result & mask) == done ||
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+					 result == U32_MAX), 1, usec);
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+	if (result == U32_MAX)
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+		return -ENODEV;
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+
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+	return ret;
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 }
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 /* reset a non-running (STS_HALT == 1) controller */
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@@ -788,11 +786,11 @@
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 					mem_reads8(hcd->regs, qtd->payload_addr,
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 							qtd->data_buffer,
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 							qtd->actual_length);
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-					/* Fall through (?) */
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+					fallthrough;
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 				case OUT_PID:
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 					qtd->urb->actual_length +=
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 							qtd->actual_length;
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-					/* Fall through ... */
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+					fallthrough;
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 				case SETUP_PID:
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 					break;
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 				}
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@@ -1032,8 +1030,6 @@
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 			urb->status = -EOVERFLOW;
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 		else if (FROM_DW3_CERR(ptd->dw3))
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 			urb->status = -EPIPE;  /* Stall */
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-		else if (ptd->dw3 & DW3_ERROR_BIT)
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-			urb->status = -EPROTO; /* XactErr */
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 		else
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 			urb->status = -EPROTO; /* Unknown */
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 /*