add driver 5G

hc

2024-01-31 f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2

 kernel/include/asm-generic/div64.h
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@@ -28,12 +28,12 @@
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 /**
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  * do_div - returns 2 values: calculate remainder and update new dividend
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- * @n: pointer to uint64_t dividend (will be updated)
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+ * @n: uint64_t dividend (will be updated)
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  * @base: uint32_t divisor
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  *
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  * Summary:
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- * ``uint32_t remainder = *n % base;``
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- * ``*n = *n / base;``
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+ * ``uint32_t remainder = n % base;``
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+ * ``n = n / base;``
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  *
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  * Return: (uint32_t)remainder
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  *
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@@ -178,7 +178,8 @@
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 	uint32_t m_hi = m >> 32;
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 	uint32_t n_lo = n;
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 	uint32_t n_hi = n >> 32;
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-	uint64_t res, tmp;
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+	uint64_t res;
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+	uint32_t res_lo, res_hi, tmp;
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 	if (!bias) {
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 		res = ((uint64_t)m_lo * n_lo) >> 32;
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@@ -187,8 +188,9 @@
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 		res = (m + (uint64_t)m_lo * n_lo) >> 32;
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 	} else {
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 		res = m + (uint64_t)m_lo * n_lo;
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-		tmp = (res < m) ? (1ULL << 32) : 0;
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-		res = (res >> 32) + tmp;
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+		res_lo = res >> 32;
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+		res_hi = (res_lo < m_hi);
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+		res = res_lo | ((uint64_t)res_hi << 32);
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 	}
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 	if (!(m & ((1ULL << 63) | (1ULL << 31)))) {
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@@ -197,10 +199,12 @@
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 		res += (uint64_t)m_hi * n_lo;
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 		res >>= 32;
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 	} else {
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-		tmp = res += (uint64_t)m_lo * n_hi;
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+		res += (uint64_t)m_lo * n_hi;
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+		tmp = res >> 32;
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 		res += (uint64_t)m_hi * n_lo;
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-		tmp = (res < tmp) ? (1ULL << 32) : 0;
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-		res = (res >> 32) + tmp;
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+		res_lo = res >> 32;
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+		res_hi = (res_lo < tmp);
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+		res = res_lo | ((uint64_t)res_hi << 32);
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 	}
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 	res += (uint64_t)m_hi * n_hi;