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Diffstat (limited to 'drivers/pcmcia/ds.c')
-rw-r--r--drivers/pcmcia/ds.c333
1 files changed, 190 insertions, 143 deletions
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 1a4a3c49cc15..0f98be4450b7 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -42,8 +42,6 @@ MODULE_DESCRIPTION("PCMCIA Driver Services");
MODULE_LICENSE("GPL");
-spinlock_t pcmcia_dev_list_lock;
-
/*====================================================================*/
static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
@@ -126,9 +124,9 @@ pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
dynid->id.device_no = device_no;
memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
- spin_lock(&pdrv->dynids.lock);
+ mutex_lock(&pdrv->dynids.lock);
list_add_tail(&dynid->node, &pdrv->dynids.list);
- spin_unlock(&pdrv->dynids.lock);
+ mutex_unlock(&pdrv->dynids.lock);
if (get_driver(&pdrv->drv)) {
retval = driver_attach(&pdrv->drv);
@@ -146,12 +144,12 @@ pcmcia_free_dynids(struct pcmcia_driver *drv)
{
struct pcmcia_dynid *dynid, *n;
- spin_lock(&drv->dynids.lock);
+ mutex_lock(&drv->dynids.lock);
list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
list_del(&dynid->node);
kfree(dynid);
}
- spin_unlock(&drv->dynids.lock);
+ mutex_unlock(&drv->dynids.lock);
}
static int
@@ -182,7 +180,7 @@ int pcmcia_register_driver(struct pcmcia_driver *driver)
/* initialize common fields */
driver->drv.bus = &pcmcia_bus_type;
driver->drv.owner = driver->owner;
- spin_lock_init(&driver->dynids.lock);
+ mutex_init(&driver->dynids.lock);
INIT_LIST_HEAD(&driver->dynids.list);
pr_debug("registering driver %s\n", driver->drv.name);
@@ -239,30 +237,21 @@ static void pcmcia_release_function(struct kref *ref)
static void pcmcia_release_dev(struct device *dev)
{
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
+ int i;
dev_dbg(dev, "releasing device\n");
pcmcia_put_socket(p_dev->socket);
+ for (i = 0; i < 4; i++)
+ kfree(p_dev->prod_id[i]);
kfree(p_dev->devname);
kref_put(&p_dev->function_config->ref, pcmcia_release_function);
kfree(p_dev);
}
-static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
-{
- if (!s->pcmcia_state.device_add_pending) {
- dev_dbg(&s->dev, "scheduling to add %s secondary"
- " device to %d\n", mfc ? "mfc" : "pfc", s->sock);
- s->pcmcia_state.device_add_pending = 1;
- s->pcmcia_state.mfc_pfc = mfc;
- schedule_work(&s->device_add);
- }
- return;
-}
static int pcmcia_device_probe(struct device *dev)
{
struct pcmcia_device *p_dev;
struct pcmcia_driver *p_drv;
- struct pcmcia_device_id *did;
struct pcmcia_socket *s;
cistpl_config_t cis_config;
int ret = 0;
@@ -275,18 +264,6 @@ static int pcmcia_device_probe(struct device *dev)
p_drv = to_pcmcia_drv(dev->driver);
s = p_dev->socket;
- /* The PCMCIA code passes the match data in via dev_set_drvdata(dev)
- * which is an ugly hack. Once the driver probe is called it may
- * and often will overwrite the match data so we must save it first
- *
- * handle pseudo multifunction devices:
- * there are at most two pseudo multifunction devices.
- * if we're matching against the first, schedule a
- * call which will then check whether there are two
- * pseudo devices, and if not, add the second one.
- */
- did = dev_get_drvdata(&p_dev->dev);
-
dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name);
if ((!p_drv->probe) || (!p_dev->function_config) ||
@@ -315,9 +292,11 @@ static int pcmcia_device_probe(struct device *dev)
goto put_module;
}
- if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
+ mutex_lock(&s->ops_mutex);
+ if ((s->pcmcia_state.has_pfc) &&
(p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
- pcmcia_add_device_later(p_dev->socket, 0);
+ pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
+ mutex_unlock(&s->ops_mutex);
put_module:
if (ret)
@@ -336,26 +315,27 @@ static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *le
{
struct pcmcia_device *p_dev;
struct pcmcia_device *tmp;
- unsigned long flags;
dev_dbg(leftover ? &leftover->dev : &s->dev,
"pcmcia_card_remove(%d) %s\n", s->sock,
leftover ? leftover->devname : "");
+ mutex_lock(&s->ops_mutex);
if (!leftover)
s->device_count = 0;
else
s->device_count = 1;
+ mutex_unlock(&s->ops_mutex);
/* unregister all pcmcia_devices registered with this socket, except leftover */
list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
if (p_dev == leftover)
continue;
- spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ mutex_lock(&s->ops_mutex);
list_del(&p_dev->socket_device_list);
p_dev->_removed = 1;
- spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ mutex_unlock(&s->ops_mutex);
dev_dbg(&p_dev->dev, "unregistering device\n");
device_unregister(&p_dev->dev);
@@ -368,7 +348,6 @@ static int pcmcia_device_remove(struct device *dev)
{
struct pcmcia_device *p_dev;
struct pcmcia_driver *p_drv;
- struct pcmcia_device_id *did;
int i;
p_dev = to_pcmcia_dev(dev);
@@ -380,9 +359,8 @@ static int pcmcia_device_remove(struct device *dev)
* pseudo multi-function card, we need to unbind
* all devices
*/
- did = dev_get_drvdata(&p_dev->dev);
- if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
- (p_dev->socket->device_count != 0) &&
+ if ((p_dev->socket->pcmcia_state.has_pfc) &&
+ (p_dev->socket->device_count > 0) &&
(p_dev->device_no == 0))
pcmcia_card_remove(p_dev->socket, p_dev);
@@ -431,16 +409,20 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
CISTPL_MANFID, &manf_id)) {
+ mutex_lock(&p_dev->socket->ops_mutex);
p_dev->manf_id = manf_id.manf;
p_dev->card_id = manf_id.card;
p_dev->has_manf_id = 1;
p_dev->has_card_id = 1;
+ mutex_unlock(&p_dev->socket->ops_mutex);
}
if (!pccard_read_tuple(p_dev->socket, p_dev->func,
CISTPL_FUNCID, &func_id)) {
+ mutex_lock(&p_dev->socket->ops_mutex);
p_dev->func_id = func_id.func;
p_dev->has_func_id = 1;
+ mutex_unlock(&p_dev->socket->ops_mutex);
} else {
/* rule of thumb: cards with no FUNCID, but with
* common memory device geometry information, are
@@ -457,17 +439,21 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
dev_dbg(&p_dev->dev,
"mem device geometry probably means "
"FUNCID_MEMORY\n");
+ mutex_lock(&p_dev->socket->ops_mutex);
p_dev->func_id = CISTPL_FUNCID_MEMORY;
p_dev->has_func_id = 1;
+ mutex_unlock(&p_dev->socket->ops_mutex);
}
kfree(devgeo);
}
if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
vers1)) {
+ mutex_lock(&p_dev->socket->ops_mutex);
for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
char *tmp;
unsigned int length;
+ char *new;
tmp = vers1->str + vers1->ofs[i];
@@ -475,14 +461,17 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
if ((length < 2) || (length > 255))
continue;
- p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
- GFP_KERNEL);
- if (!p_dev->prod_id[i])
+ new = kmalloc(sizeof(char) * length, GFP_KERNEL);
+ if (!new)
continue;
- p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
- tmp, length);
+ new = strncpy(new, tmp, length);
+
+ tmp = p_dev->prod_id[i];
+ p_dev->prod_id[i] = new;
+ kfree(tmp);
}
+ mutex_unlock(&p_dev->socket->ops_mutex);
}
kfree(vers1);
@@ -502,7 +491,7 @@ static DEFINE_MUTEX(device_add_lock);
struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
{
struct pcmcia_device *p_dev, *tmp_dev;
- unsigned long flags;
+ int i;
s = pcmcia_get_socket(s);
if (!s)
@@ -512,16 +501,19 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu
pr_debug("adding device to %d, function %d\n", s->sock, function);
- /* max of 4 devices per card */
- if (s->device_count == 4)
- goto err_put;
-
p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
if (!p_dev)
goto err_put;
- p_dev->socket = s;
+ mutex_lock(&s->ops_mutex);
p_dev->device_no = (s->device_count++);
+ mutex_unlock(&s->ops_mutex);
+
+ /* max of 2 devices per card */
+ if (p_dev->device_no >= 2)
+ goto err_free;
+
+ p_dev->socket = s;
p_dev->func = function;
p_dev->dev.bus = &pcmcia_bus_type;
@@ -538,7 +530,7 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu
goto err_free;
dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
- spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ mutex_lock(&s->ops_mutex);
/*
* p_dev->function_config must be the same for all card functions.
@@ -556,7 +548,7 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu
/* Add to the list in pcmcia_bus_socket */
list_add(&p_dev->socket_device_list, &s->devices_list);
- spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ mutex_unlock(&s->ops_mutex);
if (!p_dev->function_config) {
dev_dbg(&p_dev->dev, "creating config_t\n");
@@ -581,14 +573,19 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu
return p_dev;
err_unreg:
- spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ mutex_lock(&s->ops_mutex);
list_del(&p_dev->socket_device_list);
- spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ mutex_unlock(&s->ops_mutex);
err_free:
+ mutex_lock(&s->ops_mutex);
+ s->device_count--;
+ mutex_unlock(&s->ops_mutex);
+
+ for (i = 0; i < 4; i++)
+ kfree(p_dev->prod_id[i]);
kfree(p_dev->devname);
kfree(p_dev);
- s->device_count--;
err_put:
mutex_unlock(&device_add_lock);
pcmcia_put_socket(s);
@@ -601,19 +598,23 @@ static int pcmcia_card_add(struct pcmcia_socket *s)
{
cistpl_longlink_mfc_t mfc;
unsigned int no_funcs, i, no_chains;
- int ret = 0;
+ int ret = -EAGAIN;
+ mutex_lock(&s->ops_mutex);
if (!(s->resource_setup_done)) {
dev_dbg(&s->dev,
"no resources available, delaying card_add\n");
+ mutex_unlock(&s->ops_mutex);
return -EAGAIN; /* try again, but later... */
}
if (pcmcia_validate_mem(s)) {
dev_dbg(&s->dev, "validating mem resources failed, "
"delaying card_add\n");
+ mutex_unlock(&s->ops_mutex);
return -EAGAIN; /* try again, but later... */
}
+ mutex_unlock(&s->ops_mutex);
ret = pccard_validate_cis(s, &no_chains);
if (ret || !no_chains) {
@@ -634,17 +635,7 @@ static int pcmcia_card_add(struct pcmcia_socket *s)
}
-static void pcmcia_delayed_add_device(struct work_struct *work)
-{
- struct pcmcia_socket *s =
- container_of(work, struct pcmcia_socket, device_add);
- dev_dbg(&s->dev, "adding additional device to %d\n", s->sock);
- pcmcia_device_add(s, s->pcmcia_state.mfc_pfc);
- s->pcmcia_state.device_add_pending = 0;
- s->pcmcia_state.mfc_pfc = 0;
-}
-
-static int pcmcia_requery(struct device *dev, void * _data)
+static int pcmcia_requery_callback(struct device *dev, void * _data)
{
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
if (!p_dev->dev.driver) {
@@ -655,45 +646,67 @@ static int pcmcia_requery(struct device *dev, void * _data)
return 0;
}
-static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
-{
- int no_devices = 0;
- int ret = 0;
- unsigned long flags;
- /* must be called with skt_mutex held */
- dev_dbg(&skt->dev, "re-scanning socket %d\n", skt->sock);
+static void pcmcia_requery(struct pcmcia_socket *s)
+{
+ int present, has_pfc;
- spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
- if (list_empty(&skt->devices_list))
- no_devices = 1;
- spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ mutex_lock(&s->ops_mutex);
+ present = s->pcmcia_state.present;
+ mutex_unlock(&s->ops_mutex);
- /* If this is because of a CIS override, start over */
- if (new_cis && !no_devices)
- pcmcia_card_remove(skt, NULL);
+ if (!present)
+ return;
- /* if no devices were added for this socket yet because of
- * missing resource information or other trouble, we need to
- * do this now. */
- if (no_devices || new_cis) {
- ret = pcmcia_card_add(skt);
- if (ret)
- return;
+ if (s->functions == 0) {
+ pcmcia_card_add(s);
+ return;
}
/* some device information might have changed because of a CIS
* update or because we can finally read it correctly... so
* determine it again, overwriting old values if necessary. */
- bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
+ bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback);
+
+ /* if the CIS changed, we need to check whether the number of
+ * functions changed. */
+ if (s->fake_cis) {
+ int old_funcs, new_funcs;
+ cistpl_longlink_mfc_t mfc;
+
+ /* does this cis override add or remove functions? */
+ old_funcs = s->functions;
+
+ if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
+ &mfc))
+ new_funcs = mfc.nfn;
+ else
+ new_funcs = 1;
+ if (old_funcs > new_funcs) {
+ pcmcia_card_remove(s, NULL);
+ pcmcia_card_add(s);
+ } else if (new_funcs > old_funcs) {
+ s->functions = new_funcs;
+ pcmcia_device_add(s, 1);
+ }
+ }
+
+ /* If the PCMCIA device consists of two pseudo devices,
+ * call pcmcia_device_add() -- which will fail if both
+ * devices are already registered. */
+ mutex_lock(&s->ops_mutex);
+ has_pfc = s->pcmcia_state.has_pfc;
+ mutex_unlock(&s->ops_mutex);
+ if (has_pfc)
+ pcmcia_device_add(s, 0);
/* we re-scan all devices, not just the ones connected to this
* socket. This does not matter, though. */
- ret = bus_rescan_devices(&pcmcia_bus_type);
- if (ret)
- printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n");
+ if (bus_rescan_devices(&pcmcia_bus_type))
+ dev_warn(&s->dev, "rescanning the bus failed\n");
}
+
#ifdef CONFIG_PCMCIA_LOAD_CIS
/**
@@ -710,9 +723,6 @@ static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
struct pcmcia_socket *s = dev->socket;
const struct firmware *fw;
int ret = -ENOMEM;
- int no_funcs;
- int old_funcs;
- cistpl_longlink_mfc_t mfc;
if (!filename)
return -EINVAL;
@@ -739,19 +749,8 @@ static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
/* update information */
pcmcia_device_query(dev);
- /* does this cis override add or remove functions? */
- old_funcs = s->functions;
-
- if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
- no_funcs = mfc.nfn;
- else
- no_funcs = 1;
- s->functions = no_funcs;
-
- if (old_funcs > no_funcs)
- pcmcia_card_remove(s, dev);
- else if (no_funcs > old_funcs)
- pcmcia_add_device_later(s, 1);
+ /* requery (as number of functions might have changed) */
+ pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
}
release:
release_firmware(fw);
@@ -818,9 +817,14 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev,
if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
if (dev->device_no != did->device_no)
return 0;
+ mutex_lock(&dev->socket->ops_mutex);
+ dev->socket->pcmcia_state.has_pfc = 1;
+ mutex_unlock(&dev->socket->ops_mutex);
}
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
+ int ret;
+
if ((!dev->has_func_id) || (dev->func_id != did->func_id))
return 0;
@@ -835,10 +839,15 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev,
* after it has re-checked that there is no possible module
* with a prod_id/manf_id/card_id match.
*/
- dev_dbg(&dev->dev,
- "skipping FUNC_ID match until userspace interaction\n");
- if (!dev->allow_func_id_match)
+ mutex_lock(&dev->socket->ops_mutex);
+ ret = dev->allow_func_id_match;
+ mutex_unlock(&dev->socket->ops_mutex);
+
+ if (!ret) {
+ dev_dbg(&dev->dev,
+ "skipping FUNC_ID match until userspace ACK\n");
return 0;
+ }
}
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
@@ -859,8 +868,6 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev,
return 0;
}
- dev_set_drvdata(&dev->dev, did);
-
return 1;
}
@@ -873,16 +880,16 @@ static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
struct pcmcia_dynid *dynid;
/* match dynamic devices first */
- spin_lock(&p_drv->dynids.lock);
+ mutex_lock(&p_drv->dynids.lock);
list_for_each_entry(dynid, &p_drv->dynids.list, node) {
dev_dbg(dev, "trying to match to %s\n", drv->name);
if (pcmcia_devmatch(p_dev, &dynid->id)) {
dev_dbg(dev, "matched to %s\n", drv->name);
- spin_unlock(&p_drv->dynids.lock);
+ mutex_unlock(&p_drv->dynids.lock);
return 1;
}
}
- spin_unlock(&p_drv->dynids.lock);
+ mutex_unlock(&p_drv->dynids.lock);
#ifdef CONFIG_PCMCIA_IOCTL
/* matching by cardmgr */
@@ -970,13 +977,14 @@ static int runtime_suspend(struct device *dev)
return rc;
}
-static void runtime_resume(struct device *dev)
+static int runtime_resume(struct device *dev)
{
int rc;
down(&dev->sem);
rc = pcmcia_dev_resume(dev);
up(&dev->sem);
+ return rc;
}
/************************ per-device sysfs output ***************************/
@@ -1027,7 +1035,7 @@ static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute
if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
ret = runtime_suspend(dev);
else if (p_dev->suspended && !strncmp(buf, "on", 2))
- runtime_resume(dev);
+ ret = runtime_resume(dev);
return ret ? ret : count;
}
@@ -1059,19 +1067,14 @@ static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
- int ret;
if (!count)
return -EINVAL;
- mutex_lock(&p_dev->socket->skt_mutex);
+ mutex_lock(&p_dev->socket->ops_mutex);
p_dev->allow_func_id_match = 1;
- mutex_unlock(&p_dev->socket->skt_mutex);
-
- ret = bus_rescan_devices(&pcmcia_bus_type);
- if (ret)
- printk(KERN_INFO "pcmcia: bus_rescan_devices failed after "
- "allowing func_id matches\n");
+ mutex_unlock(&p_dev->socket->ops_mutex);
+ pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY);
return count;
}
@@ -1099,8 +1102,13 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
struct pcmcia_driver *p_drv = NULL;
int ret = 0;
- if (p_dev->suspended)
+ mutex_lock(&p_dev->socket->ops_mutex);
+ if (p_dev->suspended) {
+ mutex_unlock(&p_dev->socket->ops_mutex);
return 0;
+ }
+ p_dev->suspended = 1;
+ mutex_unlock(&p_dev->socket->ops_mutex);
dev_dbg(dev, "suspending\n");
@@ -1117,6 +1125,9 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
"pcmcia: device %s (driver %s) did "
"not want to go to sleep (%d)\n",
p_dev->devname, p_drv->drv.name, ret);
+ mutex_lock(&p_dev->socket->ops_mutex);
+ p_dev->suspended = 0;
+ mutex_unlock(&p_dev->socket->ops_mutex);
goto out;
}
}
@@ -1127,8 +1138,6 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
}
out:
- if (!ret)
- p_dev->suspended = 1;
return ret;
}
@@ -1139,8 +1148,13 @@ static int pcmcia_dev_resume(struct device *dev)
struct pcmcia_driver *p_drv = NULL;
int ret = 0;
- if (!p_dev->suspended)
+ mutex_lock(&p_dev->socket->ops_mutex);
+ if (!p_dev->suspended) {
+ mutex_unlock(&p_dev->socket->ops_mutex);
return 0;
+ }
+ p_dev->suspended = 0;
+ mutex_unlock(&p_dev->socket->ops_mutex);
dev_dbg(dev, "resuming\n");
@@ -1161,8 +1175,6 @@ static int pcmcia_dev_resume(struct device *dev)
ret = p_drv->resume(p_dev);
out:
- if (!ret)
- p_dev->suspended = 0;
return ret;
}
@@ -1237,13 +1249,22 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
switch (event) {
case CS_EVENT_CARD_REMOVAL:
+ mutex_lock(&s->ops_mutex);
s->pcmcia_state.present = 0;
+ mutex_unlock(&s->ops_mutex);
pcmcia_card_remove(skt, NULL);
handle_event(skt, event);
+ mutex_lock(&s->ops_mutex);
+ destroy_cis_cache(s);
+ mutex_unlock(&s->ops_mutex);
break;
case CS_EVENT_CARD_INSERTION:
+ mutex_lock(&s->ops_mutex);
+ s->pcmcia_state.has_pfc = 0;
s->pcmcia_state.present = 1;
+ destroy_cis_cache(s); /* to be on the safe side... */
+ mutex_unlock(&s->ops_mutex);
pcmcia_card_add(skt);
handle_event(skt, event);
break;
@@ -1251,8 +1272,24 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
case CS_EVENT_EJECTION_REQUEST:
break;
- case CS_EVENT_PM_SUSPEND:
case CS_EVENT_PM_RESUME:
+ if (verify_cis_cache(skt) != 0) {
+ dev_dbg(&skt->dev, "cis mismatch - different card\n");
+ /* first, remove the card */
+ ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH);
+ mutex_lock(&s->ops_mutex);
+ destroy_cis_cache(skt);
+ kfree(skt->fake_cis);
+ skt->fake_cis = NULL;
+ mutex_unlock(&s->ops_mutex);
+ /* now, add the new card */
+ ds_event(skt, CS_EVENT_CARD_INSERTION,
+ CS_EVENT_PRI_LOW);
+ }
+ handle_event(skt, event);
+ break;
+
+ case CS_EVENT_PM_SUSPEND:
case CS_EVENT_RESET_PHYSICAL:
case CS_EVENT_CARD_RESET:
default:
@@ -1275,9 +1312,13 @@ struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
if (!p_dev)
return NULL;
+ mutex_lock(&p_dev->socket->ops_mutex);
if (!p_dev->socket->pcmcia_state.present)
goto out;
+ if (p_dev->socket->pcmcia_state.dead)
+ goto out;
+
if (p_dev->_removed)
goto out;
@@ -1286,6 +1327,7 @@ struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
ret = p_dev;
out:
+ mutex_unlock(&p_dev->socket->ops_mutex);
pcmcia_put_dev(p_dev);
return ret;
}
@@ -1295,7 +1337,8 @@ EXPORT_SYMBOL(pcmcia_dev_present);
static struct pcmcia_callback pcmcia_bus_callback = {
.owner = THIS_MODULE,
.event = ds_event,
- .requery = pcmcia_bus_rescan,
+ .requery = pcmcia_requery,
+ .validate = pccard_validate_cis,
.suspend = pcmcia_bus_suspend,
.resume = pcmcia_bus_resume,
};
@@ -1313,17 +1356,17 @@ static int __devinit pcmcia_bus_add_socket(struct device *dev,
return -ENODEV;
}
- /*
- * Ugly. But we want to wait for the socket threads to have started up.
- * We really should let the drivers themselves drive some of this..
- */
- msleep(250);
+ ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
+ if (ret) {
+ dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
+ pcmcia_put_socket(socket);
+ return ret;
+ }
#ifdef CONFIG_PCMCIA_IOCTL
init_waitqueue_head(&socket->queue);
#endif
INIT_LIST_HEAD(&socket->devices_list);
- INIT_WORK(&socket->device_add, pcmcia_delayed_add_device);
memset(&socket->pcmcia_state, 0, sizeof(u8));
socket->device_count = 0;
@@ -1345,14 +1388,20 @@ static void pcmcia_bus_remove_socket(struct device *dev,
if (!socket)
return;
+ mutex_lock(&socket->ops_mutex);
socket->pcmcia_state.dead = 1;
+ mutex_unlock(&socket->ops_mutex);
+
pccard_register_pcmcia(socket, NULL);
/* unregister any unbound devices */
mutex_lock(&socket->skt_mutex);
pcmcia_card_remove(socket, NULL);
+ release_cis_mem(socket);
mutex_unlock(&socket->skt_mutex);
+ sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
+
pcmcia_put_socket(socket);
return;
@@ -1383,8 +1432,6 @@ static int __init init_pcmcia_bus(void)
{
int ret;
- spin_lock_init(&pcmcia_dev_list_lock);
-
ret = bus_register(&pcmcia_bus_type);
if (ret < 0) {
printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);