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, 99 deletions

diff --git a/target/linux/layerscape/patches-5.4/821-vfio-0005-vfio-fsl-mc-Allow-userspace-to-MMAP-fsl-mc-device-MM.patch b/target/linux/layerscape/patches-5.4/821-vfio-0005-vfio-fsl-mc-Allow-userspace-to-MMAP-fsl-mc-device-MM.patch
deleted file mode 100644
index 67bdd20800..0000000000
--- a/target/linux/layerscape/patches-5.4/821-vfio-0005-vfio-fsl-mc-Allow-userspace-to-MMAP-fsl-mc-device-MM.patch
+++ /dev/null
@@ -1,99 +0,0 @@
-From 3b81ac2bdcff0f611cad468329cc726600bb23ba Mon Sep 17 00:00:00 2001
-From: Diana Craciun <diana.craciun@nxp.com>
-Date: Fri, 27 Sep 2019 16:40:34 +0300
-Subject: [PATCH] vfio/fsl-mc: Allow userspace to MMAP fsl-mc device MMIO
- regions
-
-Allow userspace to mmap device regions for direct access of
-fsl-mc devices.
-
-Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
-Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
----
- drivers/vfio/fsl-mc/vfio_fsl_mc.c | 65 +++++++++++++++++++++++++++++++++++++--
- 1 file changed, 63 insertions(+), 2 deletions(-)
-
---- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
-+++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
-@@ -32,7 +32,10 @@ static int vfio_fsl_mc_regions_init(stru
- 
- 		vdev->regions[i].addr = res->start;
- 		vdev->regions[i].size = PAGE_ALIGN((resource_size(res)));
--		vdev->regions[i].flags = 0;
-+		vdev->regions[i].flags = VFIO_REGION_INFO_FLAG_MMAP;
-+		vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;
-+		if (!(mc_dev->regions[i].flags & IORESOURCE_READONLY))
-+			vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_WRITE;
- 	}
- 
- 	vdev->num_regions = mc_dev->obj_desc.region_count;
-@@ -163,10 +166,68 @@ static ssize_t vfio_fsl_mc_write(void *d
- 	return -EINVAL;
- }
- 
-+static int vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region,
-+				 struct vm_area_struct *vma)
-+{
-+	u64 size = vma->vm_end - vma->vm_start;
-+	u64 pgoff, base;
-+
-+	pgoff = vma->vm_pgoff &
-+		((1U << (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT)) - 1);
-+	base = pgoff << PAGE_SHIFT;
-+
-+	if (region.size < PAGE_SIZE || base + size > region.size)
-+		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,
-+			       size, vma->vm_page_prot);
-+}
-+
- static int vfio_fsl_mc_mmap(void *device_data, struct vm_area_struct *vma)
- {
--	return -EINVAL;
-+	struct vfio_fsl_mc_device *vdev = device_data;
-+	struct fsl_mc_device *mc_dev = vdev->mc_dev;
-+	unsigned long size, addr;
-+	int index;
-+
-+	index = vma->vm_pgoff >> (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT);
-+
-+	if (vma->vm_end < vma->vm_start)
-+		return -EINVAL;
-+	if (vma->vm_start & ~PAGE_MASK)
-+		return -EINVAL;
-+	if (vma->vm_end & ~PAGE_MASK)
-+		return -EINVAL;
-+	if (!(vma->vm_flags & VM_SHARED))
-+		return -EINVAL;
-+	if (index >= vdev->num_regions)
-+		return -EINVAL;
-+
-+	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))
-+		return -EINVAL;
-+
-+	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)
-+			&& (vma->vm_flags & VM_READ))
-+		return -EINVAL;
-+
-+	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)
-+			&& (vma->vm_flags & VM_WRITE))
-+		return -EINVAL;
-+
-+	addr = vdev->regions[index].addr;
-+	size = vdev->regions[index].size;
-+
-+	vma->vm_private_data = mc_dev;
-+
-+	return vfio_fsl_mc_mmap_mmio(vdev->regions[index], vma);
-+
-+	return -EFAULT;
- }
-+
- static int vfio_fsl_mc_init_device(struct vfio_fsl_mc_device *vdev)
- {
- 	struct fsl_mc_device *mc_dev = vdev->mc_dev;