int pch_set_station_address()

in ptp_pch.c [293:336]

• 36 lines of code
• 8 McCabe index (conditional complexity)

int pch_set_station_address(u8 *addr, struct pci_dev *pdev)
{
	s32 i;
	struct pch_dev *chip = pci_get_drvdata(pdev);

	/* Verify the parameter */
	if ((chip->regs == NULL) || addr == (u8 *)NULL) {
		dev_err(&pdev->dev,
			"invalid params returning PCH_INVALIDPARAM\n");
		return PCH_INVALIDPARAM;
	}
	/* For all station address bytes */
	for (i = 0; i < PCH_STATION_BYTES; i++) {
		u32 val;
		s32 tmp;

		tmp = hex_to_bin(addr[i * 3]);
		if (tmp < 0) {
			dev_err(&pdev->dev,
				"invalid params returning PCH_INVALIDPARAM\n");
			return PCH_INVALIDPARAM;
		}
		val = tmp * 16;
		tmp = hex_to_bin(addr[(i * 3) + 1]);
		if (tmp < 0) {
			dev_err(&pdev->dev,
				"invalid params returning PCH_INVALIDPARAM\n");
			return PCH_INVALIDPARAM;
		}
		val += tmp;
		/* Expects ':' separated addresses */
		if ((i < 5) && (addr[(i * 3) + 2] != ':')) {
			dev_err(&pdev->dev,
				"invalid params returning PCH_INVALIDPARAM\n");
			return PCH_INVALIDPARAM;
		}

		/* Ideally we should set the address only after validating
							 entire string */
		dev_dbg(&pdev->dev, "invoking pch_station_set\n");
		iowrite32(val, &chip->regs->ts_st[i]);
	}
	return 0;
}