[openwrt/openwrt] vrx518_ep: fix compilation error with kernel 6.12

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/e80dfdb6c5e2040e055bf14308af53da8792a596

commit e80dfdb6c5e2040e055bf14308af53da8792a596
Author: Andre Heider <a.heider at gmail.com>
AuthorDate: Sat May 10 17:19:18 2025 +0800

    vrx518_ep: fix compilation error with kernel 6.12
    
    PCI_IRQ_LEGACY was renamed to PCI_IRQ_INTX for kernel 6.10. Fix
    compilation error:
    
    /home/db/owrt/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-ipq40xx_generic/vrx518_ep-2.1.0/ep.c:469:69: error: 'PCI_IRQ_LEGACY' undeclared (first use in this function); did you mean 'NR_IRQS_LEGACY'?
      469 |         err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSI | PCI_IRQ_LEGACY);
          |                                                                     ^~~~~~~~~~~~~~
          |                                                                     NR_IRQS_LEGACY
    
    Signed-off-by: Andre Heider <a.heider at gmail.com>
    Co-authored-by: Shiji Yang <yangshiji66 at outlook.com>
    Link: https://github.com/openwrt/openwrt/pull/18744
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 .../lantiq/vrx518_ep/patches/100-compat.patch      | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/package/kernel/lantiq/vrx518_ep/patches/100-compat.patch b/package/kernel/lantiq/vrx518_ep/patches/100-compat.patch
index a139c7a862..3457779776 100644
--- a/package/kernel/lantiq/vrx518_ep/patches/100-compat.patch
+++ b/package/kernel/lantiq/vrx518_ep/patches/100-compat.patch
@@ -1,6 +1,14 @@
 --- a/ep.c
 +++ b/ep.c
-@@ -373,23 +373,23 @@ int dc_ep_dev_info_req(int dev_idx, enum
+@@ -34,6 +34,7 @@
+ #include <linux/pci.h>
+ #include <linux/pci_regs.h>
+ #include <linux/platform_device.h>
++#include <linux/version.h>
+ 
+ #include "ep.h"
+ #include "aca.h"
+@@ -373,23 +374,23 @@ int dc_ep_dev_info_req(int dev_idx, enum
  
  	switch (module) {
  	case DC_EP_INT_PPE:
@@ -31,18 +39,22 @@
  		break;
  	}
  
-@@ -466,8 +466,8 @@ static int dc_ep_msi_enable(struct pci_d
+@@ -466,8 +467,12 @@ static int dc_ep_msi_enable(struct pci_d
  		return -EIO;
  	}
  
 -	err = pci_enable_msi_exact(pdev, nvec);
 -	if (err) {
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(6, 10, 0))
 +	err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSI | PCI_IRQ_LEGACY);
++#else
++	err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSI | PCI_IRQ_INTX);
++#endif
 +	if (err < 0) {
  		dev_err(&pdev->dev,
  			"%s: Failed to enable MSI interrupts error code: %d\n",
  			__func__, err);
-@@ -589,15 +589,15 @@ static int dc_ep_probe(struct pci_dev *p
+@@ -589,15 +594,15 @@ static int dc_ep_probe(struct pci_dev *p
  	/* Target structures have a limit of 32 bit DMA pointers.
  	 * DMA pointers can be wider than 32 bits by default on some systems.
  	 */
@@ -61,7 +73,7 @@
  		goto err_region;
  	}
  
-@@ -654,7 +654,7 @@ static int dc_ep_probe(struct pci_dev *p
+@@ -654,7 +659,7 @@ static int dc_ep_probe(struct pci_dev *p
  		goto err_iomap;
  
  	spin_lock(&dc_ep_lock);
@@ -70,7 +82,7 @@
  	spin_unlock(&dc_ep_lock);
  
  #ifndef CONFIG_OF
-@@ -715,7 +715,7 @@ static void dc_ep_remove(struct pci_dev
+@@ -715,7 +720,7 @@ static void dc_ep_remove(struct pci_dev
  	dc_ep_icu_disable(priv);
  	pci_iounmap(pdev, priv->mem);
  	pci_release_region(pdev, DC_EP_BAR_NUM);