static int check_of_data()

in uio_fsl_elbc_gpcm.c [219:248]

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

static int check_of_data(struct fsl_elbc_gpcm *priv,
				   struct resource *res,
				   u32 reg_br, u32 reg_or)
{
	/* check specified bank */
	if (priv->bank >= MAX_BANKS) {
		dev_err(priv->dev, "invalid bank\n");
		return -ENODEV;
	}

	/* check specified mode (BR_MS_GPCM is 0) */
	if ((reg_br & BR_MSEL) != BR_MS_GPCM) {
		dev_err(priv->dev, "unsupported mode\n");
		return -ENODEV;
	}

	/* check specified mask vs. resource size */
	if ((~(reg_or & OR_GPCM_AM) + 1) != resource_size(res)) {
		dev_err(priv->dev, "address mask / size mismatch\n");
		return -ENODEV;
	}

	/* check specified address */
	if ((reg_br & reg_or & BR_BA) != fsl_lbc_addr(res->start)) {
		dev_err(priv->dev, "base address mismatch\n");
		return -ENODEV;
	}

	return 0;
}