The code below the return will never be executed.. it seems to me that brackets are missing.

int verify_cis_cache(struct pcmcia_socket *s)
{
	struct cis_cache_entry *cis;
	char *buf;

	buf = kmalloc(256, GFP_KERNEL);
	if (buf == NULL)
		dev_printk(KERN_WARNING, &s->dev,
			   "no memory for verifying CIS\n");
		return -ENOMEM;