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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-06 15:16:49 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-06 15:16:49 -0400
commitde3796e77a587b28f0c9d8e04c02894d3939dc4e (patch)
treef5a414a421e45e7f90c113aaf3ef30e078672f46 /drivers/media/rc/lirc_dev.c
parentbcb65a797eb7c51e4f227dd19295f14d38738fee (diff)
parent98c32bcded0e249fd48726930ae9f393e0e318b4 (diff)
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (46 commits) [media] rc: call input_sync after scancode reports [media] imon: allow either proto on unknown 0xffdc [media] imon: auto-config ffdc 7e device [media] saa7134: fix raw IR timeout value [media] rc: fix ghost keypresses with certain hw [media] [staging] lirc_serial: allocate irq at init time [media] lirc_zilog: fix spinning rx thread [media] keymaps: fix table for pinnacle pctv hd devices [media] ite-cir: 8709 needs to use pnp resource 2 [media] V4L: mx1-camera: fix uninitialized variable [media] omap_vout: Added check in reqbuf & mmap for buf_size allocation [media] OMAP_VOUT: Change hardcoded device node number to -1 [media] OMAP_VOUTLIB: Fix wrong resizer calculation [media] uvcvideo: Disable the queue when failing to start [media] uvcvideo: Remove buffers from the queues when freeing [media] uvcvideo: Ignore entities for terminals with no supported format [media] v4l: Don't access media entity after is has been destroyed [media] media: omap3isp: fix a potential NULL deref [media] media: vb2: fix allocation failure check [media] media: vb2: reset queued_count value during queue reinitialization ... Fix up trivial conflict in MAINTAINERS as per Mauro
Diffstat (limited to 'drivers/media/rc/lirc_dev.c')
-rw-r--r--drivers/media/rc/lirc_dev.c37
1 files changed, 27 insertions, 10 deletions
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index fd237ab120b..27997a9ceb0 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -55,6 +55,8 @@ struct irctl {
55 struct lirc_buffer *buf; 55 struct lirc_buffer *buf;
56 unsigned int chunk_size; 56 unsigned int chunk_size;
57 57
58 struct cdev *cdev;
59
58 struct task_struct *task; 60 struct task_struct *task;
59 long jiffies_to_wait; 61 long jiffies_to_wait;
60}; 62};
@@ -62,7 +64,6 @@ struct irctl {
62static DEFINE_MUTEX(lirc_dev_lock); 64static DEFINE_MUTEX(lirc_dev_lock);
63 65
64static struct irctl *irctls[MAX_IRCTL_DEVICES]; 66static struct irctl *irctls[MAX_IRCTL_DEVICES];
65static struct cdev cdevs[MAX_IRCTL_DEVICES];
66 67
67/* Only used for sysfs but defined to void otherwise */ 68/* Only used for sysfs but defined to void otherwise */
68static struct class *lirc_class; 69static struct class *lirc_class;
@@ -167,9 +168,13 @@ static struct file_operations lirc_dev_fops = {
167 168
168static int lirc_cdev_add(struct irctl *ir) 169static int lirc_cdev_add(struct irctl *ir)
169{ 170{
170 int retval; 171 int retval = -ENOMEM;
171 struct lirc_driver *d = &ir->d; 172 struct lirc_driver *d = &ir->d;
172 struct cdev *cdev = &cdevs[d->minor]; 173 struct cdev *cdev;
174
175 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
176 if (!cdev)
177 goto err_out;
173 178
174 if (d->fops) { 179 if (d->fops) {
175 cdev_init(cdev, d->fops); 180 cdev_init(cdev, d->fops);
@@ -180,12 +185,20 @@ static int lirc_cdev_add(struct irctl *ir)
180 } 185 }
181 retval = kobject_set_name(&cdev->kobj, "lirc%d", d->minor); 186 retval = kobject_set_name(&cdev->kobj, "lirc%d", d->minor);
182 if (retval) 187 if (retval)
183 return retval; 188 goto err_out;
184 189
185 retval = cdev_add(cdev, MKDEV(MAJOR(lirc_base_dev), d->minor), 1); 190 retval = cdev_add(cdev, MKDEV(MAJOR(lirc_base_dev), d->minor), 1);
186 if (retval) 191 if (retval) {
187 kobject_put(&cdev->kobj); 192 kobject_put(&cdev->kobj);
193 goto err_out;
194 }
195
196 ir->cdev = cdev;
197
198 return 0;
188 199
200err_out:
201 kfree(cdev);
189 return retval; 202 return retval;
190} 203}
191 204
@@ -214,7 +227,7 @@ int lirc_register_driver(struct lirc_driver *d)
214 if (MAX_IRCTL_DEVICES <= d->minor) { 227 if (MAX_IRCTL_DEVICES <= d->minor) {
215 dev_err(d->dev, "lirc_dev: lirc_register_driver: " 228 dev_err(d->dev, "lirc_dev: lirc_register_driver: "
216 "\"minor\" must be between 0 and %d (%d)!\n", 229 "\"minor\" must be between 0 and %d (%d)!\n",
217 MAX_IRCTL_DEVICES-1, d->minor); 230 MAX_IRCTL_DEVICES - 1, d->minor);
218 err = -EBADRQC; 231 err = -EBADRQC;
219 goto out; 232 goto out;
220 } 233 }
@@ -369,7 +382,7 @@ int lirc_unregister_driver(int minor)
369 382
370 if (minor < 0 || minor >= MAX_IRCTL_DEVICES) { 383 if (minor < 0 || minor >= MAX_IRCTL_DEVICES) {
371 printk(KERN_ERR "lirc_dev: %s: minor (%d) must be between " 384 printk(KERN_ERR "lirc_dev: %s: minor (%d) must be between "
372 "0 and %d!\n", __func__, minor, MAX_IRCTL_DEVICES-1); 385 "0 and %d!\n", __func__, minor, MAX_IRCTL_DEVICES - 1);
373 return -EBADRQC; 386 return -EBADRQC;
374 } 387 }
375 388
@@ -380,7 +393,7 @@ int lirc_unregister_driver(int minor)
380 return -ENOENT; 393 return -ENOENT;
381 } 394 }
382 395
383 cdev = &cdevs[minor]; 396 cdev = ir->cdev;
384 397
385 mutex_lock(&lirc_dev_lock); 398 mutex_lock(&lirc_dev_lock);
386 399
@@ -410,6 +423,7 @@ int lirc_unregister_driver(int minor)
410 } else { 423 } else {
411 lirc_irctl_cleanup(ir); 424 lirc_irctl_cleanup(ir);
412 cdev_del(cdev); 425 cdev_del(cdev);
426 kfree(cdev);
413 kfree(ir); 427 kfree(ir);
414 irctls[minor] = NULL; 428 irctls[minor] = NULL;
415 } 429 }
@@ -453,7 +467,7 @@ int lirc_dev_fop_open(struct inode *inode, struct file *file)
453 goto error; 467 goto error;
454 } 468 }
455 469
456 cdev = &cdevs[iminor(inode)]; 470 cdev = ir->cdev;
457 if (try_module_get(cdev->owner)) { 471 if (try_module_get(cdev->owner)) {
458 ir->open++; 472 ir->open++;
459 retval = ir->d.set_use_inc(ir->d.data); 473 retval = ir->d.set_use_inc(ir->d.data);
@@ -484,13 +498,15 @@ EXPORT_SYMBOL(lirc_dev_fop_open);
484int lirc_dev_fop_close(struct inode *inode, struct file *file) 498int lirc_dev_fop_close(struct inode *inode, struct file *file)
485{ 499{
486 struct irctl *ir = irctls[iminor(inode)]; 500 struct irctl *ir = irctls[iminor(inode)];
487 struct cdev *cdev = &cdevs[iminor(inode)]; 501 struct cdev *cdev;
488 502
489 if (!ir) { 503 if (!ir) {
490 printk(KERN_ERR "%s: called with invalid irctl\n", __func__); 504 printk(KERN_ERR "%s: called with invalid irctl\n", __func__);
491 return -EINVAL; 505 return -EINVAL;
492 } 506 }
493 507
508 cdev = ir->cdev;
509
494 dev_dbg(ir->d.dev, LOGHEAD "close called\n", ir->d.name, ir->d.minor); 510 dev_dbg(ir->d.dev, LOGHEAD "close called\n", ir->d.name, ir->d.minor);
495 511
496 WARN_ON(mutex_lock_killable(&lirc_dev_lock)); 512 WARN_ON(mutex_lock_killable(&lirc_dev_lock));
@@ -503,6 +519,7 @@ int lirc_dev_fop_close(struct inode *inode, struct file *file)
503 lirc_irctl_cleanup(ir); 519 lirc_irctl_cleanup(ir);
504 cdev_del(cdev); 520 cdev_del(cdev);
505 irctls[ir->d.minor] = NULL; 521 irctls[ir->d.minor] = NULL;
522 kfree(cdev);
506 kfree(ir); 523 kfree(ir);
507 } 524 }
508 525