add intel dfl patches

prepare_source

@@ -27,3 +27,5 @@ cp -r config "$dir/src/debian/"
 
 rm "$dir/src/debian/patches/debian/Revert-docs-kernel_feat.py-fix-potential-command-inj.patch"
 sed -i '/debian\/Revert-docs-kernel_feat\.py-fix-potential-command-inj\.patch/d' "$dir/src/debian/patches/series"
+
+import_upstream_patches

upstream_patches/fpga-ofs-dev-6.6-lts-patches/0001-fpga-dfl-afu-use-PFN_DOWN-and-PFN_PHYS-helper-macros.patch

@@ -0,0 +1,87 @@
+From 15acf7e9d055c32ec1f87643340febb9ea2fa7e6 Mon Sep 17 00:00:00 2001
+From: Peter Colberg <peter.colberg@intel.com>
+Date: Mon, 19 Jun 2023 15:56:34 -0400
+Subject: [PATCH] fpga: dfl: afu: use PFN_DOWN() and PFN_PHYS() helper macros
+
+Replace all shifts by PAGE_SHIFT with PFN_DOWN() and PFN_PHYS() helper
+macros to convert between physical addresses and page frame numbers.
+
+These changes are cosmetic only; no functional changes.
+
+Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Signed-off-by: Peter Colberg <peter.colberg@intel.com>
+Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+---
+ drivers/fpga/dfl-afu-dma-region.c | 7 ++++---
+ drivers/fpga/dfl-afu-main.c       | 5 +++--
+ 2 files changed, 7 insertions(+), 5 deletions(-)
+
+diff --git a/drivers/fpga/dfl-afu-dma-region.c b/drivers/fpga/dfl-afu-dma-region.c
+index 02b60fde0430..e8d54cfbb301 100644
+--- a/drivers/fpga/dfl-afu-dma-region.c
++++ b/drivers/fpga/dfl-afu-dma-region.c
+@@ -10,6 +10,7 @@
+  */
+
+ #include <linux/dma-mapping.h>
++#include <linux/pfn.h>
+ #include <linux/sched/signal.h>
+ #include <linux/uaccess.h>
+ #include <linux/mm.h>
+@@ -34,7 +35,7 @@ void afu_dma_region_init(struct dfl_feature_platform_data *pdata)
+ static int afu_dma_pin_pages(struct dfl_feature_platform_data *pdata,
+ 			     struct dfl_afu_dma_region *region)
+ {
+-	int npages = region->length >> PAGE_SHIFT;
++	int npages = PFN_DOWN(region->length);
+ 	struct device *dev = &pdata->dev->dev;
+ 	int ret, pinned;
+
+@@ -82,7 +83,7 @@ static int afu_dma_pin_pages(struct dfl_feature_platform_data *pdata,
+ static void afu_dma_unpin_pages(struct dfl_feature_platform_data *pdata,
+ 				struct dfl_afu_dma_region *region)
+ {
+-	long npages = region->length >> PAGE_SHIFT;
++	long npages = PFN_DOWN(region->length);
+ 	struct device *dev = &pdata->dev->dev;
+
+ 	unpin_user_pages(region->pages, npages);
+@@ -101,7 +102,7 @@ static void afu_dma_unpin_pages(struct dfl_feature_platform_data *pdata,
+  */
+ static bool afu_dma_check_continuous_pages(struct dfl_afu_dma_region *region)
+ {
+-	int npages = region->length >> PAGE_SHIFT;
++	int npages = PFN_DOWN(region->length);
+ 	int i;
+
+ 	for (i = 0; i < npages - 1; i++)
+diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
+index 7f621e96d3b8..048c9b418c8b 100644
+--- a/drivers/fpga/dfl-afu-main.c
++++ b/drivers/fpga/dfl-afu-main.c
+@@ -16,6 +16,7 @@
+
+ #include <linux/kernel.h>
+ #include <linux/module.h>
++#include <linux/pfn.h>
+ #include <linux/uaccess.h>
+ #include <linux/fpga-dfl.h>
+
+@@ -816,7 +817,7 @@ static int afu_mmap(struct file *filp, struct vm_area_struct *vma)
+
+ 	pdata = dev_get_platdata(&pdev->dev);
+
+-	offset = vma->vm_pgoff << PAGE_SHIFT;
++	offset = PFN_PHYS(vma->vm_pgoff);
+ 	ret = afu_mmio_region_get_by_offset(pdata, offset, size, &region);
+ 	if (ret)
+ 		return ret;
+@@ -837,7 +838,7 @@ static int afu_mmap(struct file *filp, struct vm_area_struct *vma)
+ 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+ 	return remap_pfn_range(vma, vma->vm_start,
+-			(region.phys + (offset - region.offset)) >> PAGE_SHIFT,
++			PFN_DOWN(region.phys + (offset - region.offset)),
+ 			size, vma->vm_page_prot);
+ }
+