diff options
Diffstat (limited to 'drivers/pcmcia/cistpl.c')
| -rw-r--r-- | drivers/pcmcia/cistpl.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index 884a984216fe..64d0515b76bd 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -168,9 +168,12 @@ int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, } else { u_int inc = 1, card_offset, flags; - if (addr > CISTPL_MAX_CIS_SIZE) + if (addr > CISTPL_MAX_CIS_SIZE) { dev_dbg(&s->dev, "attempt to read CIS mem at addr %#x", addr); + memset(ptr, 0xff, len); + return -1; + } flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0); if (attr) { @@ -1383,7 +1386,7 @@ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info) if (!s) return -EINVAL; - if (s->functions) { + if (s->functions || !(s->state & SOCKET_PRESENT)) { WARN_ON(1); return -EINVAL; } @@ -1448,10 +1451,26 @@ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info) done: /* invalidate CIS cache on failure */ if (!dev_ok || !ident_ok || !count) { - mutex_lock(&s->ops_mutex); - destroy_cis_cache(s); - mutex_unlock(&s->ops_mutex); - ret = -EIO; +#if defined(CONFIG_MTD_PCMCIA_ANONYMOUS) + /* Set up as an anonymous card. If we don't have anonymous + memory support then just error the card as there is no + point trying to second guess. + + Note: some cards have just a device entry, it may be + worth extending support to cover these in future */ + if (!dev_ok || !ident_ok) { + dev_info(&s->dev, "no CIS, assuming an anonymous memory card.\n"); + pcmcia_replace_cis(s, "\xFF", 1); + count = 1; + ret = 0; + } else +#endif + { + mutex_lock(&s->ops_mutex); + destroy_cis_cache(s); + mutex_unlock(&s->ops_mutex); + ret = -EIO; + } } if (info) |