static void uctrl_do_txn()

in char/uctrl.c [262:298]

• 30 lines of code
• 3 McCabe index (conditional complexity)

static void uctrl_do_txn(struct uctrl_driver *driver, struct uctrl_txn *txn)
{
	int stat, incnt, outcnt, bytecnt, intr;
	u32 byte;

	stat = sbus_readl(&driver->regs->uctrl_stat);
	intr = sbus_readl(&driver->regs->uctrl_intr);
	sbus_writel(stat, &driver->regs->uctrl_stat);

	dprintk(("interrupt stat 0x%x int 0x%x\n", stat, intr));

	incnt = txn->inbits;
	outcnt = txn->outbits;
	byte = (txn->opcode << 8);
	WRITEUCTLDATA(byte);

	bytecnt = 0;
	while (incnt > 0) {
		byte = (txn->inbuf[bytecnt] << 8);
		WRITEUCTLDATA(byte);
		incnt--;
		bytecnt++;
	}

	/* Get the ack */
	READUCTLDATA(byte);
	dprintk(("ack was %x\n", (byte >> 8)));

	bytecnt = 0;
	while (outcnt > 0) {
		READUCTLDATA(byte);
		txn->outbuf[bytecnt] = (byte >> 8);
		dprintk(("set byte to %02x\n", byte));
		outcnt--;
		bytecnt++;
	}
}