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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-07 09:41:06 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-07 09:41:06 +0900
commit1071ec7bc2dabd0a9d12a1ae5570f4fd3ba944ca (patch)
tree3f889877ae180066a8e682d915680f240fbfd6ec /drivers/uio/uio.c
parentc287322c3aadf45ee15339bffdbc2e9117b9cc7a (diff)
parent425792266a40189e0b3fec02cb59a69935d8c58c (diff)
Merge tag 'char-misc-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc patches from Greg KH: "Here's the big char/misc driver patchset for 3.13-rc1. Lots of stuff in here, including some new drivers for Intel's "MIC" co-processor devices, and a new eeprom driver. Other things include the driver attribute cleanups, extcon driver updates, hyperv updates, and a raft of other miscellaneous driver fixes. All of these have been in linux-next for a while" * tag 'char-misc-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (121 commits) misc: mic: Fixes for randconfig build errors and warnings. tifm: fix error return code in tifm_7xx1_probe() w1-gpio: Use devm_* functions w1-gpio: Detect of_gpio_error for first gpio uio: Pass pointers to virt_to_page(), not integers uio: fix memory leak misc/at24: avoid infinite loop on write() misc/93xx46: avoid infinite loop on write() misc: atmel_pwm: add deferred-probing support mei: wd: host_init propagate error codes from called functions mei: replace stray pr_debug with dev_dbg mei: bus: propagate error code returned by mei_me_cl_by_id mei: mei_cl_link remove duplicated check for open_handle_count mei: print correct device state during unexpected reset mei: nfc: fix memory leak in error path lkdtm: add tests for additional page permissions lkdtm: adjust recursion size to avoid warnings lkdtm: isolate stack corruption test mei: move host_clients_map cleanup to device init mei: me: downgrade two errors to debug level ...
Diffstat (limited to 'drivers/uio/uio.c')
-rw-r--r--drivers/uio/uio.c38
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 0e808cf91d97..67beb8444930 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -288,13 +288,13 @@ static int uio_dev_add_attributes(struct uio_device *idev)
}
map = kzalloc(sizeof(*map), GFP_KERNEL);
if (!map)
- goto err_map;
+ goto err_map_kobj;
kobject_init(&map->kobj, &map_attr_type);
map->mem = mem;
mem->map = map;
ret = kobject_add(&map->kobj, idev->map_dir, "map%d", mi);
if (ret)
- goto err_map;
+ goto err_map_kobj;
ret = kobject_uevent(&map->kobj, KOBJ_ADD);
if (ret)
goto err_map;
@@ -313,14 +313,14 @@ static int uio_dev_add_attributes(struct uio_device *idev)
}
portio = kzalloc(sizeof(*portio), GFP_KERNEL);
if (!portio)
- goto err_portio;
+ goto err_portio_kobj;
kobject_init(&portio->kobj, &portio_attr_type);
portio->port = port;
port->portio = portio;
ret = kobject_add(&portio->kobj, idev->portio_dir,
"port%d", pi);
if (ret)
- goto err_portio;
+ goto err_portio_kobj;
ret = kobject_uevent(&portio->kobj, KOBJ_ADD);
if (ret)
goto err_portio;
@@ -329,14 +329,18 @@ static int uio_dev_add_attributes(struct uio_device *idev)
return 0;
err_portio:
- for (pi--; pi >= 0; pi--) {
+ pi--;
+err_portio_kobj:
+ for (; pi >= 0; pi--) {
port = &idev->info->port[pi];
portio = port->portio;
kobject_put(&portio->kobj);
}
kobject_put(idev->portio_dir);
err_map:
- for (mi--; mi>=0; mi--) {
+ mi--;
+err_map_kobj:
+ for (; mi >= 0; mi--) {
mem = &idev->info->mem[mi];
map = mem->map;
kobject_put(&map->kobj);
@@ -601,6 +605,7 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
struct uio_device *idev = vma->vm_private_data;
struct page *page;
unsigned long offset;
+ void *addr;
int mi = uio_find_mem_index(vma);
if (mi < 0)
@@ -612,10 +617,11 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
*/
offset = (vmf->pgoff - mi) << PAGE_SHIFT;
+ addr = (void *)(unsigned long)idev->info->mem[mi].addr + offset;
if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL)
- page = virt_to_page(idev->info->mem[mi].addr + offset);
+ page = virt_to_page(addr);
else
- page = vmalloc_to_page((void *)(unsigned long)idev->info->mem[mi].addr + offset);
+ page = vmalloc_to_page(addr);
get_page(page);
vmf->page = page;
return 0;
@@ -809,10 +815,9 @@ int __uio_register_device(struct module *owner,
info->uio_dev = NULL;
- idev = kzalloc(sizeof(*idev), GFP_KERNEL);
+ idev = devm_kzalloc(parent, sizeof(*idev), GFP_KERNEL);
if (!idev) {
- ret = -ENOMEM;
- goto err_kzalloc;
+ return -ENOMEM;
}
idev->owner = owner;
@@ -822,7 +827,7 @@ int __uio_register_device(struct module *owner,
ret = uio_get_minor(idev);
if (ret)
- goto err_get_minor;
+ return ret;
idev->dev = device_create(&uio_class, parent,
MKDEV(uio_major, idev->minor), idev,
@@ -840,7 +845,7 @@ int __uio_register_device(struct module *owner,
info->uio_dev = idev;
if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) {
- ret = request_irq(info->irq, uio_interrupt,
+ ret = devm_request_irq(parent, info->irq, uio_interrupt,
info->irq_flags, info->name, idev);
if (ret)
goto err_request_irq;
@@ -854,9 +859,6 @@ err_uio_dev_add_attributes:
device_destroy(&uio_class, MKDEV(uio_major, idev->minor));
err_device_create:
uio_free_minor(idev);
-err_get_minor:
- kfree(idev);
-err_kzalloc:
return ret;
}
EXPORT_SYMBOL_GPL(__uio_register_device);
@@ -877,13 +879,9 @@ void uio_unregister_device(struct uio_info *info)
uio_free_minor(idev);
- if (info->irq && (info->irq != UIO_IRQ_CUSTOM))
- free_irq(info->irq, idev);
-
uio_dev_del_attributes(idev);
device_destroy(&uio_class, MKDEV(uio_major, idev->minor));
- kfree(idev);
return;
}