From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/uio/uio.c | 93 ++++++++++++++++++++++++++++++++++------------
1 files changed, 68 insertions(+), 25 deletions(-)
diff --git a/kernel/drivers/uio/uio.c b/kernel/drivers/uio/uio.c
index 0e3e16c..be06f1a 100644
--- a/kernel/drivers/uio/uio.c
+++ b/kernel/drivers/uio/uio.c
@@ -274,7 +274,7 @@
.dev_groups = uio_groups,
};
-bool uio_class_registered;
+static bool uio_class_registered;
/*
* device functions
@@ -398,7 +398,7 @@
static int uio_get_minor(struct uio_device *idev)
{
- int retval = -ENOMEM;
+ int retval;
mutex_lock(&minor_lock);
retval = idr_alloc(&uio_idr, idev, 0, UIO_MAX_DEVICES, GFP_KERNEL);
@@ -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;
}
@@ -994,6 +996,44 @@
}
EXPORT_SYMBOL_GPL(__uio_register_device);
+static void devm_uio_unregister_device(struct device *dev, void *res)
+{
+ uio_unregister_device(*(struct uio_info **)res);
+}
+
+/**
+ * devm_uio_register_device - Resource managed uio_register_device()
+ * @owner: module that creates the new device
+ * @parent: parent device
+ * @info: UIO device capabilities
+ *
+ * returns zero on success or a negative error code.
+ */
+int __devm_uio_register_device(struct module *owner,
+ struct device *parent,
+ struct uio_info *info)
+{
+ struct uio_info **ptr;
+ int ret;
+
+ ptr = devres_alloc(devm_uio_unregister_device, sizeof(*ptr),
+ GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ *ptr = info;
+ ret = __uio_register_device(owner, parent, info);
+ if (ret) {
+ devres_free(ptr);
+ return ret;
+ }
+
+ devres_add(parent, ptr);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__devm_uio_register_device);
+
/**
* uio_unregister_device - unregister a industrial IO device
* @info: UIO device capabilities
@@ -1019,6 +1059,9 @@
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);
uio_free_minor(minor);
--
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