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https://github.com/torvalds/linux.git
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[PATCH] pcmcia: ds.c debug enhancements
Add verbose error messages and debug information to ds.c Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski
parent
ebe5cfb3b9
commit
d9d9ea0169
@ -250,6 +250,8 @@ int pcmcia_register_driver(struct pcmcia_driver *driver)
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driver->drv.bus = &pcmcia_bus_type;
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driver->drv.owner = driver->owner;
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ds_dbg(3, "registering driver %s\n", driver->drv.name);
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return driver_register(&driver->drv);
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}
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EXPORT_SYMBOL(pcmcia_register_driver);
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@ -259,6 +261,7 @@ EXPORT_SYMBOL(pcmcia_register_driver);
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*/
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void pcmcia_unregister_driver(struct pcmcia_driver *driver)
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{
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ds_dbg(3, "unregistering driver %s\n", driver->drv.name);
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driver_unregister(&driver->drv);
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}
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EXPORT_SYMBOL(pcmcia_unregister_driver);
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@ -284,13 +287,14 @@ void pcmcia_put_dev(struct pcmcia_device *p_dev)
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static void pcmcia_release_function(struct kref *ref)
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{
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struct config_t *c = container_of(ref, struct config_t, ref);
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ds_dbg(1, "releasing config_t\n");
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kfree(c);
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}
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static void pcmcia_release_dev(struct device *dev)
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{
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struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
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ds_dbg(1, "releasing dev %p\n", p_dev);
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ds_dbg(1, "releasing device %s\n", p_dev->dev.bus_id);
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pcmcia_put_socket(p_dev->socket);
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kfree(p_dev->devname);
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kref_put(&p_dev->function_config->ref, pcmcia_release_function);
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@ -300,6 +304,8 @@ static void pcmcia_release_dev(struct device *dev)
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static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
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{
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if (!s->pcmcia_state.device_add_pending) {
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ds_dbg(1, "scheduling to add %s secondary"
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" device to %d\n", mfc ? "mfc" : "pfc", s->sock);
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s->pcmcia_state.device_add_pending = 1;
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s->pcmcia_state.mfc_pfc = mfc;
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schedule_work(&s->device_add);
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@ -324,6 +330,9 @@ static int pcmcia_device_probe(struct device * dev)
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p_drv = to_pcmcia_drv(dev->driver);
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s = p_dev->socket;
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ds_dbg(1, "trying to bind %s to %s\n", p_dev->dev.bus_id,
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p_drv->drv.name);
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if ((!p_drv->probe) || (!p_dev->function_config) ||
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(!try_module_get(p_drv->owner))) {
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ret = -EINVAL;
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@ -343,8 +352,11 @@ static int pcmcia_device_probe(struct device * dev)
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}
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ret = p_drv->probe(p_dev);
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if (ret)
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if (ret) {
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ds_dbg(1, "binding %s to %s failed with %d\n",
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p_dev->dev.bus_id, p_drv->drv.name, ret);
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goto put_module;
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}
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/* handle pseudo multifunction devices:
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* there are at most two pseudo multifunction devices.
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@ -376,8 +388,8 @@ static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *le
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struct pcmcia_device *tmp;
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unsigned long flags;
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ds_dbg(2, "unbind_request(%d)\n", s->sock);
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ds_dbg(2, "pcmcia_card_remove(%d) %s\n", s->sock,
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leftover ? leftover->devname : "");
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if (!leftover)
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s->device_count = 0;
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@ -394,6 +406,7 @@ static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *le
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p_dev->_removed=1;
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spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
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ds_dbg(2, "unregistering device %s\n", p_dev->dev.bus_id);
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device_unregister(&p_dev->dev);
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}
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@ -410,6 +423,8 @@ static int pcmcia_device_remove(struct device * dev)
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p_dev = to_pcmcia_dev(dev);
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p_drv = to_pcmcia_drv(dev->driver);
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ds_dbg(1, "removing device %s\n", p_dev->dev.bus_id);
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/* If we're removing the primary module driving a
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* pseudo multi-function card, we need to unbind
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* all devices
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@ -542,6 +557,8 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
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mutex_lock(&device_add_lock);
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ds_dbg(3, "adding device to %d, function %d\n", s->sock, function);
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/* max of 4 devices per card */
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if (s->device_count == 4)
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goto err_put;
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@ -563,8 +580,8 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
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if (!p_dev->devname)
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goto err_free;
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sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
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ds_dbg(3, "devname is %s\n", p_dev->devname);
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/* compat */
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spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
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/*
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@ -584,6 +601,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
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spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
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if (!p_dev->function_config) {
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ds_dbg(3, "creating config_t for %s\n", p_dev->dev.bus_id);
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p_dev->function_config = kzalloc(sizeof(struct config_t),
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GFP_KERNEL);
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if (!p_dev->function_config)
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@ -627,11 +645,16 @@ static int pcmcia_card_add(struct pcmcia_socket *s)
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unsigned int no_funcs, i;
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int ret = 0;
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if (!(s->resource_setup_done))
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if (!(s->resource_setup_done)) {
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ds_dbg(3, "no resources available, delaying card_add\n");
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return -EAGAIN; /* try again, but later... */
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}
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if (pcmcia_validate_mem(s))
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if (pcmcia_validate_mem(s)) {
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ds_dbg(3, "validating mem resources failed, "
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"delaying card_add\n");
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return -EAGAIN; /* try again, but later... */
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}
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ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
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if (ret || !cisinfo.Chains) {
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@ -655,6 +678,7 @@ static int pcmcia_card_add(struct pcmcia_socket *s)
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static void pcmcia_delayed_add_device(void *data)
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{
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struct pcmcia_socket *s = data;
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ds_dbg(1, "adding additional device to %d\n", s->sock);
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pcmcia_device_add(s, s->pcmcia_state.mfc_pfc);
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s->pcmcia_state.device_add_pending = 0;
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s->pcmcia_state.mfc_pfc = 0;
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@ -663,8 +687,11 @@ static void pcmcia_delayed_add_device(void *data)
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static int pcmcia_requery(struct device *dev, void * _data)
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{
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struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
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if (!p_dev->dev.driver)
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if (!p_dev->dev.driver) {
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ds_dbg(1, "update device information for %s\n",
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p_dev->dev.bus_id);
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pcmcia_device_query(p_dev);
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}
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return 0;
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}
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@ -676,6 +703,8 @@ static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
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unsigned long flags;
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/* must be called with skt_mutex held */
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ds_dbg(0, "re-scanning socket %d\n", skt->sock);
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spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
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if (list_empty(&skt->devices_list))
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no_devices = 1;
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@ -731,26 +760,38 @@ static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
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if (!filename)
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return -EINVAL;
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ds_dbg(1, "trying to load firmware %s\n", filename);
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ds_dbg(1, "trying to load CIS file %s\n", filename);
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if (strlen(filename) > 14)
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if (strlen(filename) > 14) {
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printk(KERN_WARNING "pcmcia: CIS filename is too long\n");
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return -EINVAL;
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}
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snprintf(path, 20, "%s", filename);
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if (request_firmware(&fw, path, &dev->dev) == 0) {
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if (fw->size >= CISTPL_MAX_CIS_SIZE)
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if (fw->size >= CISTPL_MAX_CIS_SIZE) {
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ret = -EINVAL;
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printk(KERN_ERR "pcmcia: CIS override is too big\n");
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goto release;
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}
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cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
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if (!cis)
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if (!cis) {
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ret = -ENOMEM;
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goto release;
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}
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cis->Length = fw->size + 1;
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memcpy(cis->Data, fw->data, fw->size);
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if (!pcmcia_replace_cis(s, cis))
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ret = 0;
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else {
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printk(KERN_ERR "pcmcia: CIS override failed\n");
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goto release;
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}
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/* update information */
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pcmcia_device_query(dev);
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@ -851,11 +892,14 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev,
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* after it has re-checked that there is no possible module
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* with a prod_id/manf_id/card_id match.
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*/
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ds_dbg(0, "skipping FUNC_ID match for %s until userspace "
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"interaction\n", dev->dev.bus_id);
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if (!dev->allow_func_id_match)
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return 0;
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}
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if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
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ds_dbg(0, "device %s needs a fake CIS\n", dev->dev.bus_id);
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if (!dev->socket->fake_cis)
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pcmcia_load_firmware(dev, did->cisfile);
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@ -885,13 +929,21 @@ static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
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#ifdef CONFIG_PCMCIA_IOCTL
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/* matching by cardmgr */
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if (p_dev->cardmgr == p_drv)
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if (p_dev->cardmgr == p_drv) {
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ds_dbg(0, "cardmgr matched %s to %s\n", dev->bus_id,
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drv->name);
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return 1;
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}
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#endif
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while (did && did->match_flags) {
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if (pcmcia_devmatch(p_dev, did))
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ds_dbg(3, "trying to match %s to %s\n", dev->bus_id,
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drv->name);
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if (pcmcia_devmatch(p_dev, did)) {
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ds_dbg(0, "matched %s to %s\n", dev->bus_id,
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drv->name);
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return 1;
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}
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did++;
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}
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@ -1082,6 +1134,8 @@ static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
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struct pcmcia_driver *p_drv = NULL;
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int ret = 0;
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ds_dbg(2, "suspending %s\n", dev->bus_id);
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if (dev->driver)
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p_drv = to_pcmcia_drv(dev->driver);
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@ -1090,12 +1144,18 @@ static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
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if (p_drv->suspend) {
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ret = p_drv->suspend(p_dev);
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if (ret)
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if (ret) {
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printk(KERN_ERR "pcmcia: device %s (driver %s) did "
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"not want to go to sleep (%d)\n",
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p_dev->devname, p_drv->drv.name, ret);
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goto out;
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}
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}
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if (p_dev->device_no == p_dev->func)
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if (p_dev->device_no == p_dev->func) {
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ds_dbg(2, "releasing configuration for %s\n", dev->bus_id);
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pcmcia_release_configuration(p_dev);
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}
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out:
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if (!ret)
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@ -1110,6 +1170,8 @@ static int pcmcia_dev_resume(struct device * dev)
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struct pcmcia_driver *p_drv = NULL;
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int ret = 0;
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ds_dbg(2, "resuming %s\n", dev->bus_id);
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if (dev->driver)
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p_drv = to_pcmcia_drv(dev->driver);
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@ -1117,6 +1179,7 @@ static int pcmcia_dev_resume(struct device * dev)
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goto out;
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if (p_dev->device_no == p_dev->func) {
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ds_dbg(2, "requesting configuration for %s\n", dev->bus_id);
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ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
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if (ret)
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goto out;
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@ -1158,12 +1221,14 @@ static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
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static int pcmcia_bus_resume(struct pcmcia_socket *skt)
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{
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ds_dbg(2, "resuming socket %d\n", skt->sock);
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bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
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return 0;
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}
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static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
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{
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ds_dbg(2, "suspending socket %d\n", skt->sock);
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if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
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pcmcia_bus_suspend_callback)) {
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pcmcia_bus_resume(skt);
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