Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 2762148..a576989 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -274,7 +274,7 @@
.dev_groups = uio_groups,
};
-bool uio_class_registered;
+static bool uio_class_registered;
/*
* device functions
@@ -491,10 +491,10 @@
if (!idev->info) {
mutex_unlock(&idev->info_lock);
ret = -EINVAL;
- goto err_alloc_listener;
+ goto err_infoopen;
}
- if (idev->info && idev->info->open)
+ if (idev->info->open)
ret = idev->info->open(idev->info, inode);
mutex_unlock(&idev->info_lock);
if (ret)
@@ -569,20 +569,20 @@
ssize_t retval = 0;
s32 event_count;
- mutex_lock(&idev->info_lock);
- if (!idev->info || !idev->info->irq)
- retval = -EIO;
- mutex_unlock(&idev->info_lock);
-
- if (retval)
- return retval;
-
if (count != sizeof(s32))
return -EINVAL;
add_wait_queue(&idev->wait, &wait);
do {
+ mutex_lock(&idev->info_lock);
+ if (!idev->info || !idev->info->irq) {
+ retval = -EIO;
+ mutex_unlock(&idev->info_lock);
+ break;
+ }
+ mutex_unlock(&idev->info_lock);
+
set_current_state(TASK_INTERRUPTIBLE);
event_count = atomic_read(&idev->event);
@@ -635,7 +635,7 @@
goto out;
}
- if (!idev->info || !idev->info->irq) {
+ if (!idev->info->irq) {
retval = -EIO;
goto out;
}
@@ -670,7 +670,7 @@
struct page *page;
unsigned long offset;
void *addr;
- int ret = 0;
+ vm_fault_t ret = 0;
int mi;
mutex_lock(&idev->info_lock);
@@ -738,7 +738,8 @@
return -EINVAL;
vma->vm_ops = &uio_physical_vm_ops;
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ if (idev->info->mem[mi].memtype == UIO_MEM_PHYS)
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
/*
* We cannot use the vm_iomap_memory() helper here,
@@ -795,18 +796,19 @@
}
switch (idev->info->mem[mi].memtype) {
- case UIO_MEM_PHYS:
- ret = uio_mmap_physical(vma);
- break;
- case UIO_MEM_LOGICAL:
- case UIO_MEM_VIRTUAL:
- ret = uio_mmap_logical(vma);
- break;
- default:
- ret = -EINVAL;
+ case UIO_MEM_IOVA:
+ case UIO_MEM_PHYS:
+ ret = uio_mmap_physical(vma);
+ break;
+ case UIO_MEM_LOGICAL:
+ case UIO_MEM_VIRTUAL:
+ ret = uio_mmap_logical(vma);
+ break;
+ default:
+ ret = -EINVAL;
}
-out:
+ out:
mutex_unlock(&idev->info_lock);
return ret;
}
@@ -938,9 +940,12 @@
atomic_set(&idev->event, 0);
ret = uio_get_minor(idev);
- if (ret)
+ if (ret) {
+ kfree(idev);
return ret;
+ }
+ device_initialize(&idev->dev);
idev->dev.devt = MKDEV(uio_major, idev->minor);
idev->dev.class = &uio_class;
idev->dev.parent = parent;
@@ -951,7 +956,7 @@
if (ret)
goto err_device_create;
- ret = device_register(&idev->dev);
+ ret = device_add(&idev->dev);
if (ret)
goto err_device_create;
@@ -983,9 +988,10 @@
err_request_irq:
uio_dev_del_attributes(idev);
err_uio_dev_add_attributes:
- device_unregister(&idev->dev);
+ device_del(&idev->dev);
err_device_create:
uio_free_minor(idev);
+ put_device(&idev->dev);
return ret;
}
EXPORT_SYMBOL_GPL(__uio_register_device);
@@ -1015,6 +1021,9 @@
idev->info = NULL;
mutex_unlock(&idev->info_lock);
+ wake_up_interruptible(&idev->wait);
+ kill_fasync(&idev->async_queue, SIGIO, POLL_HUP);
+
device_unregister(&idev->dev);
return;