diff options
| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2005-07-28 01:07:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-28 08:39:00 -0700 |
| commit | 2e5a3e79091615c5eae871ad9e794ed48753ae05 (patch) | |
| tree | b354fe9969222384892d5a8629b62aeda95aee32 /drivers | |
| parent | dc33a4a36cad02b939b9a4fb2f15ade17d61cdaf (diff) | |
| download | linux-2e5a3e79091615c5eae871ad9e794ed48753ae05.tar.bz2 | |
[PATCH] pcmcia: avoid duble iounmap of one address
Avoid double iounmap of one address, and disable cis_virt if set_mem_map
failed.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pcmcia/cistpl.c | 51 |
1 files changed, 29 insertions, 22 deletions
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index dd7651ff5b43..3afb682255a0 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -88,31 +88,38 @@ EXPORT_SYMBOL(release_cis_mem); static void __iomem * set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags) { - pccard_mem_map *mem = &s->cis_mem; - int ret; + pccard_mem_map *mem = &s->cis_mem; + int ret; + + if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) { + mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s); + if (mem->res == NULL) { + printk(KERN_NOTICE "cs: unable to map card memory!\n"); + return NULL; + } + s->cis_virt = NULL; + } - if (!(s->features & SS_CAP_STATIC_MAP) && mem->res == NULL) { - mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s); - if (mem->res == NULL) { - printk(KERN_NOTICE "cs: unable to map card memory!\n"); - return NULL; + if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt)) + s->cis_virt = ioremap(mem->res->start, s->map_size); + + mem->card_start = card_offset; + mem->flags = flags; + + ret = s->ops->set_mem_map(s, mem); + if (ret) { + iounmap(s->cis_virt); + s->cis_virt = NULL; + return NULL; } - s->cis_virt = ioremap(mem->res->start, s->map_size); - } - mem->card_start = card_offset; - mem->flags = flags; - ret = s->ops->set_mem_map(s, mem); - if (ret) { - iounmap(s->cis_virt); - return NULL; - } - if (s->features & SS_CAP_STATIC_MAP) { - if (s->cis_virt) - iounmap(s->cis_virt); - s->cis_virt = ioremap(mem->static_start, s->map_size); - } - return s->cis_virt; + if (s->features & SS_CAP_STATIC_MAP) { + if (s->cis_virt) + iounmap(s->cis_virt); + s->cis_virt = ioremap(mem->static_start, s->map_size); + } + + return s->cis_virt; } /*====================================================================== |