aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/pcmcia/pcmcia_resource.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pcmcia/pcmcia_resource.c')
-rw-r--r--drivers/pcmcia/pcmcia_resource.c74
1 files changed, 46 insertions, 28 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 01f8e56c8d2..d48437f83ac 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -56,6 +56,33 @@ struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
}
+static void release_io_space(struct pcmcia_socket *s, struct resource *res)
+{
+ resource_size_t num = resource_size(res);
+ int i;
+
+ dev_dbg(&s->dev, "release_io_space for %pR\n", res);
+
+ for (i = 0; i < MAX_IO_WIN; i++) {
+ if (!s->io[i].res)
+ continue;
+ if ((s->io[i].res->start <= res->start) &&
+ (s->io[i].res->end >= res->end)) {
+ s->io[i].InUse -= num;
+ if (res->parent)
+ release_resource(res);
+ res->start = res->end = 0;
+ res->flags = IORESOURCE_IO;
+ /* Free the window if no one else is using it */
+ if (s->io[i].InUse == 0) {
+ release_resource(s->io[i].res);
+ kfree(s->io[i].res);
+ s->io[i].res = NULL;
+ }
+ }
+ }
+} /* release_io_space */
+
/** alloc_io_space
*
* Special stuff for managing IO windows, because they are scarce
@@ -87,43 +114,28 @@ static int alloc_io_space(struct pcmcia_socket *s, struct resource *res,
align = 0;
}
- ret = s->resource_ops->find_io(s, res->flags, &base, num, align);
+ ret = s->resource_ops->find_io(s, res->flags, &base, num, align,
+ &res->parent);
if (ret) {
- dev_dbg(&s->dev, "alloc_io_space request returned %d", ret);
+ dev_dbg(&s->dev, "alloc_io_space request failed (%d)\n", ret);
return -EINVAL;
}
res->start = base;
res->end = res->start + num - 1;
- dev_dbg(&s->dev, "alloc_io_space request returned %pR, %d\n", res, ret);
- return 0;
-} /* alloc_io_space */
-
-static void release_io_space(struct pcmcia_socket *s, struct resource *res)
-{
- resource_size_t num = resource_size(res);
- int i;
-
- dev_dbg(&s->dev, "release_io_space for %pR\n", res);
-
- for (i = 0; i < MAX_IO_WIN; i++) {
- if (!s->io[i].res)
- continue;
- if ((s->io[i].res->start <= res->start) &&
- (s->io[i].res->end >= res->end)) {
- s->io[i].InUse -= num;
- res->start = res->end = 0;
- res->flags = IORESOURCE_IO;
- /* Free the window if no one else is using it */
- if (s->io[i].InUse == 0) {
- release_resource(s->io[i].res);
- kfree(s->io[i].res);
- s->io[i].res = NULL;
- }
+ if (res->parent) {
+ ret = request_resource(res->parent, res);
+ if (ret) {
+ dev_warn(&s->dev,
+ "request_resource %pR failed: %d\n", res, ret);
+ res->parent = NULL;
+ release_io_space(s, res);
}
}
-} /* release_io_space */
+ dev_dbg(&s->dev, "alloc_io_space request result %d: %pR\n", ret, res);
+ return ret;
+} /* alloc_io_space */
/**
@@ -401,6 +413,7 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res)
/* Release system memory */
if (win->res) {
+ release_resource(res);
release_resource(win->res);
kfree(win->res);
win->res = NULL;
@@ -853,6 +866,11 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha
res->end = req->Base + req->Size - 1;
res->flags &= ~IORESOURCE_BITS;
res->flags |= (req->Attributes & WIN_FLAGS_MAP) | (win->map << 2);
+ res->flags |= IORESOURCE_MEM;
+ res->parent = win->res;
+ if (win->res)
+ request_resource(&iomem_resource, res);
+
dev_dbg(&s->dev, "request_window results in %pR\n", res);
mutex_unlock(&s->ops_mutex);