On Sat, Jul 16, 2005 at 04:21:44PM +0100, Russell King wrote:
> On Sat, Jul 16, 2005 at 05:12:58PM +0200, Dominik Brodowski wrote:
> > Could you send me the output of /proc/iomem on both a working kernel and on
> > 2.6.13-rc3-APM, please?
>
> Dominik, I'd suggest looking elsewhere. The memory regions must be
> free to be able to call into readable(), and therefore pccard_validate_cis().
>
> What seems to be happening is that s->ops->set_mem_map in set_cis_map
> is returning an error, causing it to free the ioremapped region
> multiple times. Maybe the card has an invalid CIS causing an out
> of range card_start to be requested?
Could you check whether this patch helps, please?
Index: 2.6.13-rc3-git2/drivers/pcmcia/cistpl.c
===================================================================
--- 2.6.13-rc3-git2.orig/drivers/pcmcia/cistpl.c
+++ 2.6.13-rc3-git2/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 = 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) && (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) && (!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;
+ }
+
+ 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;
}
/*======================================================================
-
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