diff options
author | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-01-02 12:28:04 +0100 |
---|---|---|
committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-01-17 18:30:09 +0100 |
commit | 904e377744bfdcea276c27167fa6a609929f39dc (patch) | |
tree | 4dc05b84992a2c35a1933b5b12b44391e0cd4e08 /drivers/pcmcia | |
parent | fa0b3bc504ff813cc05988bb30bbb6c6a0263eb4 (diff) | |
download | op-kernel-dev-904e377744bfdcea276c27167fa6a609929f39dc.zip op-kernel-dev-904e377744bfdcea276c27167fa6a609929f39dc.tar.gz |
pcmcia: validate CIS, not CIS cache.
In pccard_validate_cis(), validate the card CIS, not the CIS cache.
Also, destroy the CIS cache if pccard_validate_cis fails.
Furthermore, do not remove the fake CIS in destroy_cis_cache() but
do so explicitely in the code paths where it makes sense.
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia')
-rw-r--r-- | drivers/pcmcia/cistpl.c | 24 | ||||
-rw-r--r-- | drivers/pcmcia/cs.c | 4 | ||||
-rw-r--r-- | drivers/pcmcia/rsrc_nonstatic.c | 3 |
3 files changed, 21 insertions, 10 deletions
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index 25b1cd2..41ec772 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -319,22 +319,23 @@ remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len) } } +/** + * destroy_cis_cache() - destroy the CIS cache + * @s: pcmcia_socket for which CIS cache shall be destroyed + * + * This destroys the CIS cache but keeps any fake CIS alive. + */ + void destroy_cis_cache(struct pcmcia_socket *s) { struct list_head *l, *n; + struct cis_cache_entry *cis; list_for_each_safe(l, n, &s->cis_cache) { - struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node); - + cis = list_entry(l, struct cis_cache_entry, node); list_del(&cis->node); kfree(cis); } - - /* - * If there was a fake CIS, destroy that as well. - */ - kfree(s->fake_cis); - s->fake_cis = NULL; } EXPORT_SYMBOL(destroy_cis_cache); @@ -1596,6 +1597,9 @@ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info) if (!s) return -EINVAL; + /* We do not want to validate the CIS cache... */ + destroy_cis_cache(s); + tuple = kmalloc(sizeof(*tuple), GFP_KERNEL); if (tuple == NULL) { dev_printk(KERN_WARNING, &s->dev, "no memory to validate CIS\n"); @@ -1647,6 +1651,10 @@ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info) count = 0; done: + /* invalidate CIS cache on failure */ + if (!dev_ok || !ident_ok || !count) + destroy_cis_cache(s); + if (info) *info = count; kfree(tuple); diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 6d6f82b..96d8d25 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -407,6 +407,8 @@ static void socket_shutdown(struct pcmcia_socket *s) s->irq.AssignedIRQ = s->irq.Config = 0; s->lock_count = 0; destroy_cis_cache(s); + kfree(s->fake_cis); + s->fake_cis = NULL; #ifdef CONFIG_CARDBUS cb_free(s); #endif @@ -577,6 +579,8 @@ static int socket_late_resume(struct pcmcia_socket *skt) dev_dbg(&skt->dev, "cis mismatch - different card\n"); socket_remove_drivers(skt); destroy_cis_cache(skt); + kfree(skt->fake_cis); + skt->fake_cis = NULL; /* * Workaround: give DS time to schedule removal. * Remove me once the 100ms delay is eliminated diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 4f93889..b886385 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -281,10 +281,9 @@ static int readable(struct pcmcia_socket *s, struct resource *res, s->cis_virt = ioremap(res->start, s->map_size); if (s->cis_virt) { ret = pccard_validate_cis(s, count); - /* invalidate mapping and CIS cache */ + /* invalidate mapping */ iounmap(s->cis_virt); s->cis_virt = NULL; - destroy_cis_cache(s); } s->cis_mem.res = NULL; if ((ret != 0) || (*count == 0)) |