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Remove nested functions from USB iterators.

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* include/grub/usb.h (grub_usb_iterate_hook_t): New type.
(grub_usb_controller_iterate_hook_t): Likewise.
(grub_usb_iterate): Add hook_data argument.
(grub_usb_controller_iterate): Likewise.
(struct grub_usb_controller_dev.iterate): Likewise.

Update all implementations and callers.
This commit is contained in:
Colin Watson 2013-01-21 21:02:24 +00:00
parent 18288f17ac
commit 5fdbaed168
9 changed files with 108 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

136
grub-core/bus/usb/usb.c
View file

@ -29,27 +29,28 @@ GRUB_MOD_LICENSE ("GPLv3+");
static grub_usb_controller_dev_t grub_usb_list;
static struct grub_usb_attach_desc *attach_hooks;
/* Iterate over all controllers found by the driver. */
static int
grub_usb_controller_dev_register_iter (grub_usb_controller_t dev, void *data)
{
grub_usb_controller_dev_t usb = data;
dev->dev = usb;
/* Enable the ports of the USB Root Hub. */
grub_usb_root_hub (dev);
return 0;
}
void
grub_usb_controller_dev_register (grub_usb_controller_dev_t usb)
{
auto int iterate_hook (grub_usb_controller_t dev);
/* Iterate over all controllers found by the driver. */
int iterate_hook (grub_usb_controller_t dev)
{
dev->dev = usb;
/* Enable the ports of the USB Root Hub. */
grub_usb_root_hub (dev);
return 0;
}
usb->next = grub_usb_list;
grub_usb_list = usb;
if (usb->iterate)
usb->iterate (iterate_hook);
usb->iterate (grub_usb_controller_dev_register_iter, usb);
}
void
@ -66,27 +67,41 @@ grub_usb_controller_dev_unregister (grub_usb_controller_dev_t usb)
}
#if 0
int
grub_usb_controller_iterate (int (*hook) (grub_usb_controller_t dev))
/* Context for grub_usb_controller_iterate. */
struct grub_usb_controller_iterate_ctx
{
grub_usb_controller_iterate_hook_t hook;
void *hook_data;
grub_usb_controller_dev_t p;
};
auto int iterate_hook (grub_usb_controller_t dev);
/* Helper for grub_usb_controller_iterate. */
static int
grub_usb_controller_iterate_iter (grub_usb_controller_t dev, void *data)
{
struct grub_usb_controller_iterate_ctx *ctx = data;
int iterate_hook (grub_usb_controller_t dev)
{
dev->dev = p;
if (hook (dev))
return 1;
return 0;
}
dev->dev = ctx->p;
if (ctx->hook (dev, ctx->hook_data))
return 1;
return 0;
}
int
grub_usb_controller_iterate (grub_usb_controller_iterate_hook_t hook,
void *hook_data)
{
struct grub_usb_controller_iterate_ctx ctx = {
.hook = hook,
.hook_data = hook_data
};
/* Iterate over all controller drivers. */
for (p = grub_usb_list; p; p = p->next)
for (ctx.p = grub_usb_list; ctx.p; ctx.p = ctx.p->next)
{
/* Iterate over the busses of the controllers. XXX: Actually, a
hub driver should do this. */
if (p->iterate (iterate_hook))
if (ctx.p->iterate (grub_usb_controller_iterate_iter, &ctx))
return 1;
}
@ -295,46 +310,47 @@ void grub_usb_device_attach (grub_usb_device_t dev)
}
}
/* Helper for grub_usb_register_attach_hook_class. */
static int
grub_usb_register_attach_hook_class_iter (grub_usb_device_t usbdev, void *data)
{
struct grub_usb_attach_desc *desc = data;
struct grub_usb_desc_device *descdev = &usbdev->descdev;
int i;
if (descdev->class != 0 || descdev->subclass || descdev->protocol != 0
|| descdev->configcnt == 0)
return 0;
/* XXX: Just check configuration 0 for now. */
for (i = 0; i < usbdev->config[0].descconf->numif; i++)
{
struct grub_usb_desc_if *interf;
interf = usbdev->config[0].interf[i].descif;
grub_dprintf ("usb", "iterate: interf=%d, class=%d, subclass=%d, protocol=%d\n",
i, interf->class, interf->subclass, interf->protocol);
if (usbdev->config[0].interf[i].attached)
continue;
if (interf->class != desc->class)
continue;
if (desc->hook (usbdev, 0, i))
usbdev->config[0].interf[i].attached = 1;
}
return 0;
}
void
grub_usb_register_attach_hook_class (struct grub_usb_attach_desc *desc)
{
auto int usb_iterate (grub_usb_device_t dev);
int usb_iterate (grub_usb_device_t usbdev)
{
struct grub_usb_desc_device *descdev = &usbdev->descdev;
int i;
if (descdev->class != 0 || descdev->subclass || descdev->protocol != 0
|| descdev->configcnt == 0)
return 0;
/* XXX: Just check configuration 0 for now. */
for (i = 0; i < usbdev->config[0].descconf->numif; i++)
{
struct grub_usb_desc_if *interf;
interf = usbdev->config[0].interf[i].descif;
grub_dprintf ("usb", "iterate: interf=%d, class=%d, subclass=%d, protocol=%d\n",
i, interf->class, interf->subclass, interf->protocol);
if (usbdev->config[0].interf[i].attached)
continue;
if (interf->class != desc->class)
continue;
if (desc->hook (usbdev, 0, i))
usbdev->config[0].interf[i].attached = 1;
}
return 0;
}
desc->next = attach_hooks;
attach_hooks = desc;
grub_usb_iterate (usb_iterate);
grub_usb_iterate (grub_usb_register_attach_hook_class_iter, desc);
}
void