[PATCH] pcmcia: use bitfield instead of p_state and state
Instead of the two status values struct pcmcia_device->p_state and state,
use descriptive bitfields. Most value-checking in drivers was invalid, as
the core now only calls the ->remove() (a.k.a. detach) function in case the
attachement _and_ configuration was successful.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/drivers/pcmcia/cs_internal.h b/drivers/pcmcia/cs_internal.h
index ecc579b..d6164cd 100644
--- a/drivers/pcmcia/cs_internal.h
+++ b/drivers/pcmcia/cs_internal.h
@@ -23,7 +23,7 @@
#define CLIENT_IO_REQ 0x0004
#define CLIENT_UNBOUND 0x0008
#define CLIENT_STALE 0x0010
-#define CLIENT_WIN_REQ(i) (0x20<<(i))
+#define CLIENT_WIN_REQ(i) (0x1<<(i))
#define CLIENT_CARDBUS 0x8000
#define REGION_MAGIC 0xE3C9
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 34e634a..8c87343 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -390,8 +390,6 @@
goto put_dev;
}
- p_dev->p_state &= ~CLIENT_UNBOUND;
-
ret = p_drv->probe(p_dev);
if (ret)
goto put_module;
@@ -433,17 +431,16 @@
p_drv->remove(p_dev);
/* check for proper unloading */
- if (p_dev->p_state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
+ if (p_dev->_irq || p_dev->_io || p_dev->_locked)
printk(KERN_INFO "pcmcia: driver %s did not release config properly\n",
p_drv->drv.name);
for (i = 0; i < MAX_WIN; i++)
- if (p_dev->p_state & CLIENT_WIN_REQ(i))
+ if (p_dev->_win & CLIENT_WIN_REQ(i))
printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n",
p_drv->drv.name);
/* references from pcmcia_probe_device */
- p_dev->p_state = CLIENT_UNBOUND;
pcmcia_put_dev(p_dev);
module_put(p_drv->owner);
@@ -472,7 +469,6 @@
}
p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
list_del(&p_dev->socket_device_list);
- p_dev->p_state |= CLIENT_STALE;
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
device_unregister(&p_dev->dev);
@@ -602,9 +598,6 @@
sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
/* compat */
- p_dev->p_state = CLIENT_UNBOUND;
-
-
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
/*
@@ -1033,15 +1026,18 @@
if (dev->driver)
p_drv = to_pcmcia_drv(dev->driver);
- if (p_drv && p_drv->suspend) {
+ if (!p_drv)
+ goto out;
+
+ if (p_drv->suspend) {
ret = p_drv->suspend(p_dev);
if (ret)
goto out;
- if ((p_dev->state & DEV_CONFIG) &&
- !(p_dev->state & DEV_SUSPEND_NORELEASE))
- pcmcia_release_configuration(p_dev);
}
+ if (p_dev->device_no == p_dev->func)
+ pcmcia_release_configuration(p_dev);
+
out:
if (!ret)
p_dev->suspended = 1;
@@ -1058,17 +1054,18 @@
if (dev->driver)
p_drv = to_pcmcia_drv(dev->driver);
- if (p_drv && p_drv->resume) {
- if ((p_dev->state & DEV_CONFIG) &&
- !(p_dev->state & DEV_SUSPEND_NORELEASE)){
- ret = pcmcia_request_configuration(p_dev,
- &p_dev->conf);
- if (ret)
- goto out;
- }
- ret = p_drv->resume(p_dev);
+ if (!p_drv)
+ goto out;
+
+ if (p_dev->device_no == p_dev->func) {
+ ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
+ if (ret)
+ goto out;
}
+ if (p_drv->resume)
+ ret = p_drv->resume(p_dev);
+
out:
if (!ret)
p_dev->suspended = 0;
diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c
index 2b11a332..c53db7c 100644
--- a/drivers/pcmcia/pcmcia_ioctl.c
+++ b/drivers/pcmcia/pcmcia_ioctl.c
@@ -304,6 +304,7 @@
{
dev_node_t *node;
struct pcmcia_device *p_dev;
+ struct pcmcia_driver *p_drv;
unsigned long flags;
int ret = 0;
@@ -358,7 +359,8 @@
found:
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
- if (p_dev->state & DEV_CONFIG_PENDING) {
+ p_drv = to_pcmcia_drv(p_dev->dev.driver);
+ if (p_drv && !p_dev->_locked) {
ret = -EAGAIN;
goto err_put;
}
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index dbf167c..45063b4 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -476,8 +476,8 @@
config_t *c = p_dev->function_config;
int i;
- if (p_dev->p_state & CLIENT_CONFIG_LOCKED) {
- p_dev->p_state &= ~CLIENT_CONFIG_LOCKED;
+ if (p_dev->_locked) {
+ p_dev->_locked = 0;
if (--(s->lock_count) == 0) {
s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
s->socket.Vpp = 0;
@@ -516,10 +516,10 @@
struct pcmcia_socket *s = p_dev->socket;
config_t *c = p_dev->function_config;
- if (!(p_dev->p_state & CLIENT_IO_REQ))
+ if (!p_dev->_io )
return CS_BAD_HANDLE;
- p_dev->p_state &= ~CLIENT_IO_REQ;
+ p_dev->_io = 0;
if ((c->io.BasePort1 != req->BasePort1) ||
(c->io.NumPorts1 != req->NumPorts1) ||
@@ -542,9 +542,9 @@
struct pcmcia_socket *s = p_dev->socket;
config_t *c= p_dev->function_config;
- if (!(p_dev->p_state & CLIENT_IRQ_REQ))
+ if (!p_dev->_irq)
return CS_BAD_HANDLE;
- p_dev->p_state &= ~CLIENT_IRQ_REQ;
+ p_dev->_irq = 0;
if (c->state & CONFIG_LOCKED)
return CS_CONFIGURATION_LOCKED;
@@ -576,7 +576,7 @@
if ((win == NULL) || (win->magic != WINDOW_MAGIC))
return CS_BAD_HANDLE;
s = win->sock;
- if (!(win->handle->p_state & CLIENT_WIN_REQ(win->index)))
+ if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
return CS_BAD_HANDLE;
/* Shut down memory window */
@@ -590,7 +590,7 @@
kfree(win->ctl.res);
win->ctl.res = NULL;
}
- win->handle->p_state &= ~CLIENT_WIN_REQ(win->index);
+ win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
win->magic = 0;
@@ -708,7 +708,7 @@
}
c->state |= CONFIG_LOCKED;
- p_dev->p_state |= CLIENT_CONFIG_LOCKED;
+ p_dev->_locked = 1;
return CS_SUCCESS;
} /* pcmcia_request_configuration */
EXPORT_SYMBOL(pcmcia_request_configuration);
@@ -754,7 +754,7 @@
c->io = *req;
c->state |= CONFIG_IO_REQ;
- p_dev->p_state |= CLIENT_IO_REQ;
+ p_dev->_io = 1;
return CS_SUCCESS;
} /* pcmcia_request_io */
EXPORT_SYMBOL(pcmcia_request_io);
@@ -850,7 +850,7 @@
s->irq.Config++;
c->state |= CONFIG_IRQ_REQ;
- p_dev->p_state |= CLIENT_IRQ_REQ;
+ p_dev->_irq = 1;
#ifdef CONFIG_PCMCIA_PROBE
pcmcia_used_irq[irq]++;
@@ -910,7 +910,7 @@
if (!win->ctl.res)
return CS_IN_USE;
}
- (*p_dev)->p_state |= CLIENT_WIN_REQ(w);
+ (*p_dev)->_win |= CLIENT_WIN_REQ(w);
/* Configure the socket controller */
win->ctl.map = w+1;