exca(4) caused panic

With 1.23 revision /sys/dev/exca/exca.c my notebook going to the panic,
when an pccard inserted. That patch fixed this problem:

--- sys/dev/exca/exca.c.orig Thu Mar  9 08:26:13 2006
+++ sys/dev/exca/exca.c  Thu Mar  9 08:26:44 2006
_at__at_ -179,11 +179,11 _at__at_
    struct mem_map_index_st *map;
    struct pccard_mem_handle *mem;
    uint32_t offset;
-   int mem8 = (mem->kind == PCCARD_A_MEM_ATTR);
-   mem8 = 1;
+   int mem8; 

    map = &mem_map_index[win];
    mem = &sc->mem[win];
+   mem8 = (mem->kind == PCCARD_A_MEM_ATTR);
    offset = ((mem->cardaddr >> EXCA_CARDMEM_ADDRX_SHIFT) -
      (mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT)) & 0x3fff;
    exca_putb(sc, map->sysmem_start_lsb,


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