void ioread16_rep()

in kernel/io.c [303:326]

• 22 lines of code
• 5 McCabe index (conditional complexity)

void ioread16_rep(const void __iomem *port, void *dst, unsigned long count)
{
	if (unlikely((unsigned long)dst & 0x3)) {
		if (!count)
			return;
		BUG_ON((unsigned long)dst & 0x1);
		count--;
		*(unsigned short *)dst = ioread16(port);
		dst += 2;
	}

	while (count >= 2) {
		unsigned int w;
		count -= 2;
		w = ioread16(port);
		w |= ioread16(port) << 16;
		*(unsigned int *)dst = w;
		dst += 4;
	}

	if (count) {
		*(unsigned short*)dst = ioread16(port);
	}
}