kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 193 deletions

diff --git a/target/linux/layerscape/patches-5.4/821-vfio-0006-vfio-fsl-mc-Added-lock-support-in-preparation-for-in.patch b/target/linux/layerscape/patches-5.4/821-vfio-0006-vfio-fsl-mc-Added-lock-support-in-preparation-for-in.patch
deleted file mode 100644
index 490f4e35f8..0000000000
--- a/target/linux/layerscape/patches-5.4/821-vfio-0006-vfio-fsl-mc-Added-lock-support-in-preparation-for-in.patch
+++ /dev/null
@@ -1,193 +0,0 @@
-From 9ea8e954812efc4fc9b27e553019295d4dcd0407 Mon Sep 17 00:00:00 2001
-From: Diana Craciun <diana.craciun@nxp.com>
-Date: Tue, 15 Oct 2019 11:22:26 +0300
-Subject: [PATCH] vfio/fsl-mc: Added lock support in preparation for interrupt
- handling
-
-All the devices in a DPRC share the same pool of interrupts.
-Because of this the access to the pool of interrupts must be
-protected with a lock. Extend the current lock implementation
-to have a lock per DPRC.
-
-Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
----
- drivers/vfio/fsl-mc/vfio_fsl_mc.c         | 90 ++++++++++++++++++++++++++++---
- drivers/vfio/fsl-mc/vfio_fsl_mc_private.h |  7 ++-
- 2 files changed, 89 insertions(+), 8 deletions(-)
-
---- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
-+++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
-@@ -15,6 +15,75 @@
- 
- #include "vfio_fsl_mc_private.h"
- 
-+static DEFINE_MUTEX(reflck_lock);
-+
-+static void vfio_fsl_mc_reflck_get(struct vfio_fsl_mc_reflck *reflck)
-+{
-+	kref_get(&reflck->kref);
-+}
-+
-+static void vfio_fsl_mc_reflck_release(struct kref *kref)
-+{
-+	struct vfio_fsl_mc_reflck *reflck = container_of(kref,
-+						      struct vfio_fsl_mc_reflck,
-+						      kref);
-+
-+	kfree(reflck);
-+	mutex_unlock(&reflck_lock);
-+}
-+
-+static void vfio_fsl_mc_reflck_put(struct vfio_fsl_mc_reflck *reflck)
-+{
-+	kref_put_mutex(&reflck->kref, vfio_fsl_mc_reflck_release, &reflck_lock);
-+}
-+
-+static struct vfio_fsl_mc_reflck *vfio_fsl_mc_reflck_alloc(void)
-+{
-+	struct vfio_fsl_mc_reflck *reflck;
-+
-+	reflck = kzalloc(sizeof(*reflck), GFP_KERNEL);
-+	if (!reflck)
-+		return ERR_PTR(-ENOMEM);
-+
-+	kref_init(&reflck->kref);
-+	mutex_init(&reflck->lock);
-+
-+	return reflck;
-+}
-+
-+static int vfio_fsl_mc_reflck_attach(struct vfio_fsl_mc_device *vdev)
-+{
-+	int ret = 0;
-+
-+	mutex_lock(&reflck_lock);
-+	if (is_fsl_mc_bus_dprc(vdev->mc_dev)) {
-+		vdev->reflck = vfio_fsl_mc_reflck_alloc();
-+	} else {
-+		struct device *mc_cont_dev = vdev->mc_dev->dev.parent;
-+		struct vfio_device *device;
-+		struct vfio_fsl_mc_device *cont_vdev;
-+
-+		device = vfio_device_get_from_dev(mc_cont_dev);
-+		if (!device) {
-+			ret = -ENODEV;
-+			goto unlock;
-+		}
-+
-+		cont_vdev = vfio_device_data(device);
-+		if (!cont_vdev->reflck) {
-+			vfio_device_put(device);
-+			ret = -ENODEV;
-+			goto unlock;
-+		}
-+		vfio_fsl_mc_reflck_get(cont_vdev->reflck);
-+		vdev->reflck = cont_vdev->reflck;
-+		vfio_device_put(device);
-+	}
-+
-+unlock:
-+	mutex_unlock(&reflck_lock);
-+	return ret;
-+}
- 
- static int vfio_fsl_mc_regions_init(struct vfio_fsl_mc_device *vdev)
- {
-@@ -55,7 +124,7 @@ static int vfio_fsl_mc_open(void *device
- 	if (!try_module_get(THIS_MODULE))
- 		return -ENODEV;
- 
--	mutex_lock(&vdev->driver_lock);
-+	mutex_lock(&vdev->reflck->lock);
- 	if (!vdev->refcnt) {
- 		ret = vfio_fsl_mc_regions_init(vdev);
- 		if (ret)
-@@ -63,11 +132,11 @@ static int vfio_fsl_mc_open(void *device
- 	}
- 	vdev->refcnt++;
- 
--	mutex_unlock(&vdev->driver_lock);
-+	mutex_unlock(&vdev->reflck->lock);
- 	return 0;
- 
- err_reg_init:
--	mutex_unlock(&vdev->driver_lock);
-+	mutex_unlock(&vdev->reflck->lock);
- 	module_put(THIS_MODULE);
- 	return ret;
- }
-@@ -76,12 +145,12 @@ static void vfio_fsl_mc_release(void *de
- {
- 	struct vfio_fsl_mc_device *vdev = device_data;
- 
--	mutex_lock(&vdev->driver_lock);
-+	mutex_lock(&vdev->reflck->lock);
- 
- 	if (!(--vdev->refcnt))
- 		vfio_fsl_mc_regions_cleanup(vdev);
- 
--	mutex_unlock(&vdev->driver_lock);
-+	mutex_unlock(&vdev->reflck->lock);
- 
- 	module_put(THIS_MODULE);
- }
-@@ -180,7 +249,6 @@ static int vfio_fsl_mc_mmap_mmio(struct
- 		return -EINVAL;
- 
- 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
--
- 	vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff;
- 
- 	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
-@@ -335,12 +403,18 @@ static int vfio_fsl_mc_probe(struct fsl_
- 		return ret;
- 	}
- 
-+	ret = vfio_fsl_mc_reflck_attach(vdev);
-+	if (ret) {
-+		vfio_iommu_group_put(group, dev);
-+		return ret;
-+	}
-+
- 	ret = vfio_fsl_mc_init_device(vdev);
- 	if (ret) {
-+		vfio_fsl_mc_reflck_put(vdev->reflck);
- 		vfio_iommu_group_put(group, dev);
- 		return ret;
- 	}
--	mutex_init(&vdev->driver_lock);
- 
- 	return ret;
- }
-@@ -374,6 +448,8 @@ static int vfio_fsl_mc_remove(struct fsl
- 	if (!vdev)
- 		return -EINVAL;
- 
-+	vfio_fsl_mc_reflck_put(vdev->reflck);
-+
- 	if (is_fsl_mc_bus_dprc(mc_dev))
- 		vfio_fsl_mc_cleanup_dprc(vdev->mc_dev);
- 
---- a/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h
-+++ b/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h
-@@ -15,6 +15,11 @@
- #define VFIO_FSL_MC_INDEX_TO_OFFSET(index)	\
- 	((u64)(index) << VFIO_FSL_MC_OFFSET_SHIFT)
- 
-+struct vfio_fsl_mc_reflck {
-+	struct kref		kref;
-+	struct mutex		lock;
-+};
-+
- struct vfio_fsl_mc_region {
- 	u32			flags;
- 	u32			type;
-@@ -27,7 +32,7 @@ struct vfio_fsl_mc_device {
- 	int				refcnt;
- 	u32				num_regions;
- 	struct vfio_fsl_mc_region	*regions;
--	struct mutex driver_lock;
-+	struct vfio_fsl_mc_reflck   *reflck;
- };
- 
- #endif /* VFIO_PCI_PRIVATE_H */