kernel: broadcom-wl: add patch dropping set_fs and get_fs for > 5.13

Drop set_fs and get_fs since they are not present in kernel > 5.13.
Fix compilation warning:
/__w/openwrt/openwrt/openwrt/build_dir/target-mipsel-openwrt-linux-musl_musl/linux-bcm47xx_generic/broadcom-wl-5.10.56.27.3/driver/wl_iw.c: In function 'dev_wlc_ioctl':
/__w/openwrt/openwrt/openwrt/build_dir/target-mipsel-openwrt-linux-musl_musl/linux-bcm47xx_generic/broadcom-wl-5.10.56.27.3/driver/wl_iw.c:121:14: error: implicit declaration of function 'get_fs'; did you mean 'sget_fc'? [-Werror=implicit-function-declaration]
  121 |         fs = get_fs();
      |              ^~~~~~
      |              sget_fc
/__w/openwrt/openwrt/openwrt/build_dir/target-mipsel-openwrt-linux-musl_musl/linux-bcm47xx_generic/broadcom-wl-5.10.56.27.3/driver/wl_iw.c:121:14: error: incompatible types when assigning to type 'mm_segment_t' from type 'int'
/__w/openwrt/openwrt/openwrt/build_dir/target-mipsel-openwrt-linux-musl_musl/linux-bcm47xx_generic/broadcom-wl-5.10.56.27.3/driver/wl_iw.c:122:9: error: implicit declaration of function 'set_fs'; did you mean 'sget_fc'? [-Werror=implicit-function-declaration]
  122 |         set_fs(KERNEL_DS);
      |         ^~~~~~
      |         sget_fc
/__w/openwrt/openwrt/openwrt/build_dir/target-mipsel-openwrt-linux-musl_musl/linux-bcm47xx_generic/broadcom-wl-5.10.56.27.3/driver/wl_iw.c:122:16: error: 'KERNEL_DS' undeclared (first use in this function); did you mean 'KERNFS_NS'?
  122 |         set_fs(KERNEL_DS);
      |                ^~~~~~~~~
      |                KERNFS_NS

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/package/kernel/broadcom-wl/patches/918-fix-warning-compilation-for-5_15.patch b/package/kernel/broadcom-wl/patches/918-fix-warning-compilation-for-5_15.patch
new file mode 100644 (file)
index 0000000..4ddb643
--- /dev/null
+++ b/package/kernel/broadcom-wl/patches/918-fix-warning-compilation-for-5_15.patch
@@ -0,0 +1,27 @@
+--- a/driver/wl_iw.c
++++ a/driver/wl_iw.c
+@@ -100,7 +100,9 @@ dev_wlc_ioctl(
+ {
+       struct ifreq ifr;
+       wl_ioctl_t ioc;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 13, 0)
+       mm_segment_t fs;
++#endif
+       int ret;
+ 
+       memset(&ioc, 0, sizeof(ioc));
+@@ -118,10 +120,14 @@ dev_wlc_ioctl(
+       dev_open(dev);
+ #endif
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 13, 0)
+       fs = get_fs();
+       set_fs(KERNEL_DS);
++#endif
+       ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, SIOCDEVPRIVATE);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 13, 0)
+       set_fs(fs);
++#endif
+ 
+       return ret;
+ }