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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2015-06-14 21:52:46 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2015-06-16 07:29:39 +0200 |
| commit | e8e68fd86d22fa5bd9c7bed16043e27ac86998f8 (patch) | |
| tree | 383199964057e8e9a54fdb8b3e9bf63eb6d8e1ec /drivers/pcmcia/ds.c | |
| parent | d19319affb6c84ef45185588f63dc28f8ff95ea3 (diff) | |
| download | linux-e8e68fd86d22fa5bd9c7bed16043e27ac86998f8.tar.bz2 | |
pcmcia: do not break rsrc_nonstatic when handling anonymous cards
Patch 1c6c9b1d9d25 caused a regression for rsrc_nonstatic: It relies
on pccard_validate_cis() to determine whether an iomem resource can
be used for PCMCIA cards. This override, however, lead invalid iomem
resources to be accepted -- and lead to a fake CIS being used instead
of the original CIS.
To fix this issue, move the override for anonymous cards to the one
place where it is needed -- when adding a PCMCIA device.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/ds.c')
| -rw-r--r-- | drivers/pcmcia/ds.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 8ab419b631d3..0decee6c556e 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -633,8 +633,24 @@ static int pcmcia_card_add(struct pcmcia_socket *s) ret = pccard_validate_cis(s, &no_chains); if (ret || !no_chains) { - dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); - return -ENODEV; +#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 (ret == -EIO) { + dev_info(&s->dev, "no CIS, assuming an anonymous memory card.\n"); + pcmcia_replace_cis(s, "\xFF", 1); + no_chains = 1; + ret = 0; + } else +#endif + { + dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); + return -ENODEV; + } } if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) |