[Buildroot] [PATCH 1/1] package/dahdi-linux: fix build with kernel >= 5.18

* [Buildroot] [PATCH 1/1] package/dahdi-linux: fix build with kernel >= 5.18
@ 2022-10-30 12:55 Fabrice Fontaine
  2022-10-30 14:03 ` Thomas Petazzoni via buildroot
  0 siblings, 1 reply; 2+ messages in thread
From: Fabrice Fontaine @ 2022-10-30 12:55 UTC (permalink / raw)
  To: buildroot; +Cc: Yann E . MORIN, Fabrice Fontaine

Fix the following build failure with kernel >= 5.18 raised since bump to
version 3.2.0 in commit 6cbfed0dbf43c5e04e3cc543b642e3c996bfed97:

/home/autobuild/autobuild/instance-0/output-1/build/dahdi-linux-3.2.0/drivers/dahdi/wct4xxp/base.c: In function ‘t4_allocate_buffers’:
/home/autobuild/autobuild/instance-0/output-1/build/dahdi-linux-3.2.0/drivers/dahdi/wct4xxp/base.c:3864:17: error: implicit declaration of function ‘pci_alloc_consistent’ [-Werror=implicit-function-declaration]
 3864 |         alloc = pci_alloc_consistent(wc->dev, numbufs * T4_BASE_SIZE(wc) * 2,
      |                 ^~~~~~~~~~~~~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/ddacd807dddeb1649e957264ac57bba27d9bb463

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 ...lation-issues-on-linux-kernel-5-18-0.patch | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 package/dahdi-linux/0003-Fixed-compilation-issues-on-linux-kernel-5-18-0.patch

diff --git a/package/dahdi-linux/0003-Fixed-compilation-issues-on-linux-kernel-5-18-0.patch b/package/dahdi-linux/0003-Fixed-compilation-issues-on-linux-kernel-5-18-0.patch
new file mode 100644
index 0000000000..a896def375
--- /dev/null
+++ b/package/dahdi-linux/0003-Fixed-compilation-issues-on-linux-kernel-5-18-0.patch
@@ -0,0 +1,58 @@
+From dbb43101c2a9205b67223b006bf75c29ebadced9 Mon Sep 17 00:00:00 2001
+From: Pushkar Singh <psingh@sangoma.com>
+Date: Tue, 2 Aug 2022 19:40:00 +0530
+Subject: [PATCH] Fixed compilation issues on linux kernel >= 5.18.0
+
+With kernel 5.18 and higher
+PCI: Remove the deprecated "pci-dma-compat.h" API
+
+The commit will make sure to impplement pci dma related api's
+[Retrieved from:
+https://github.com/asterisk/dahdi-linux/commit/dbb43101c2a9205b67223b006bf75c29ebadced9]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ include/dahdi/kernel.h | 31 +++++++++++++++++++++++++++++++
+ 1 file changed, 31 insertions(+)
+
+diff --git a/include/dahdi/kernel.h b/include/dahdi/kernel.h
+index ed81e9e3..35e93bc4 100644
+--- a/include/dahdi/kernel.h
++++ b/include/dahdi/kernel.h
+@@ -58,6 +58,37 @@
+ 
+ #include <linux/poll.h>
+ 
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 18, 0)
++#include <linux/pci.h>
++#include <linux/dma-mapping.h>
++
++static inline void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle)
++{
++    return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC);
++}
++
++static inline void pci_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
++{
++    dma_free_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, vaddr, dma_handle);
++}
++
++static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
++{
++    return dma_map_single(&hwdev->dev, ptr, size, (enum dma_data_direction)direction);
++}
++
++static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, size_t size, int direction)
++{
++    dma_unmap_single(&hwdev->dev, dma_addr, size, (enum dma_data_direction)direction);
++}
++
++static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
++{
++    return dma_set_mask(&dev->dev, mask);
++}
++
++#endif
++
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29)
+ #define HAVE_NET_DEVICE_OPS
+ #endif
-- 
2.35.1

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