static int chameleon_get_bar()

in mcb-parse.c [133:175]

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

static int chameleon_get_bar(char __iomem **base, phys_addr_t mapbase,
			     struct chameleon_bar **cb)
{
	struct chameleon_bar *c;
	int bar_count;
	__le32 reg;
	u32 dtype;

	/*
	 * For those devices which are not connected
	 * to the PCI Bus (e.g. LPC) there is a bar
	 * descriptor located directly after the
	 * chameleon header. This header is comparable
	 * to a PCI header.
	 */
	dtype = get_next_dtype(*base);
	if (dtype == CHAMELEON_DTYPE_BAR) {
		reg = readl(*base);

		bar_count = BAR_CNT(reg);
		if (bar_count <= 0 || bar_count > CHAMELEON_BAR_MAX)
			return -ENODEV;

		c = kcalloc(bar_count, sizeof(struct chameleon_bar),
			    GFP_KERNEL);
		if (!c)
			return -ENOMEM;

		chameleon_parse_bar(*base, c, bar_count);
		*base += BAR_DESC_SIZE(bar_count);
	} else {
		c = kzalloc(sizeof(struct chameleon_bar), GFP_KERNEL);
		if (!c)
			return -ENOMEM;

		bar_count = 1;
		c->addr = mapbase;
	}

	*cb = c;

	return bar_count;
}