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yaml
---
r: 304318
b: refs/heads/master
c: 3902a37
h: refs/heads/master
v: v3
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Ian Abbott authored and Greg Kroah-Hartman committed Apr 10, 2012
1 parent 72a4655 commit dcb3455
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Showing 2 changed files with 43 additions and 46 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: d8b6ca0850c558f21989d468801ad1414b1372c4
refs/heads/master: 3902a370281d2f2b130f141e8cf94eab40125769
87 changes: 42 additions & 45 deletions trunk/drivers/staging/comedi/drivers.c
Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,26 @@ void comedi_device_detach(struct comedi_device *dev)
__comedi_device_detach(dev);
}

/* do a little post-config cleanup */
/* called with module refcount incremented, decrements it */
static int comedi_device_postconfig(struct comedi_device *dev)
{
int ret = postconfig(dev);
module_put(dev->driver->module);
if (ret < 0) {
__comedi_device_detach(dev);
return ret;
}
if (!dev->board_name) {
printk(KERN_WARNING "BUG: dev->board_name=<%p>\n",
dev->board_name);
dev->board_name = "BUG";
}
smp_wmb();
dev->attached = 1;
return 0;
}

int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
struct comedi_driver *driv;
Expand All @@ -121,59 +141,36 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
}
if (driv->num_names) {
dev->board_ptr = comedi_recognize(driv, it->board_name);
if (dev->board_ptr == NULL) {
module_put(driv->module);
continue;
}
} else {
if (strcmp(driv->driver_name, it->board_name)) {
module_put(driv->module);
if (dev->board_ptr)
break;
} else if (strcmp(driv->driver_name, it->board_name))
break;
module_put(driv->module);
}
if (driv == NULL) {
/* recognize has failed if we get here */
/* report valid board names before returning error */
for (driv = comedi_drivers; driv; driv = driv->next) {
if (!try_module_get(driv->module)) {
printk(KERN_INFO
"comedi: failed to increment module count\n");
continue;
}
comedi_report_boards(driv);
module_put(driv->module);
}
/* initialize dev->driver here so
* comedi_error() can be called from attach */
dev->driver = driv;
ret = driv->attach(dev, it);
if (ret < 0) {
module_put(dev->driver->module);
__comedi_device_detach(dev);
return ret;
}
goto attached;
return -EIO;
}

/* recognize has failed if we get here */
/* report valid board names before returning error */
for (driv = comedi_drivers; driv; driv = driv->next) {
if (!try_module_get(driv->module)) {
printk(KERN_INFO
"comedi: failed to increment module count\n");
continue;
}
comedi_report_boards(driv);
module_put(driv->module);
}
return -EIO;

attached:
/* do a little post-config cleanup */
ret = postconfig(dev);
module_put(dev->driver->module);
/* initialize dev->driver here so
* comedi_error() can be called from attach */
dev->driver = driv;
ret = driv->attach(dev, it);
if (ret < 0) {
module_put(dev->driver->module);
__comedi_device_detach(dev);
return ret;
}

if (!dev->board_name) {
printk(KERN_WARNING "BUG: dev->board_name=<%p>\n",
dev->board_name);
dev->board_name = "BUG";
}
smp_wmb();
dev->attached = 1;

return 0;
return comedi_device_postconfig(dev);
}

int comedi_driver_register(struct comedi_driver *driver)
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