[v2] package/xr819-xradio: add patch to build with Linux >= 5.13

As explained in the local patch itself of_get_mac_address() has changed, so
we need to check against Linux version and use it slightly differently.

Patch is pending upstream:
https://github.com/fifteenhex/xradio/pull/15
I've realized only later there was already an opened PR for this, anyway
IMHO I think my patch is written a little better, so please accept it.
And most of all Sergey already tested it and it works:
https://lists.buildroot.org/pipermail/buildroot/2022-January/634084.html

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
---
V1->V2:
* update local patch to build correctly also with Linux >= 5.12.1 < 5.13.0
---
 ...fix-building-with-Linux-version-5.13.patch | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 package/xr819-xradio/0001-main.c-fix-building-with-Linux-version-5.13.patch

Hi All, Giulio.
I checked the patch, everything works.

18.01.2022 09:35, Giulio Benetti пишет:
> As explained in the local patch itself of_get_mac_address() has changed, so
> we need to check against Linux version and use it slightly differently.
>
> Patch is pending upstream:
> https://github.com/fifteenhex/xradio/pull/15
> I've realized only later there was already an opened PR for this, anyway
> IMHO I think my patch is written a little better, so please accept it.
> And most of all Sergey already tested it and it works:
> https://lists.buildroot.org/pipermail/buildroot/2022-January/634084.html
>
> Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
> ---
> V1->V2:
> * update local patch to build correctly also with Linux >= 5.12.1 < 5.13.0
> ---
>   ...fix-building-with-Linux-version-5.13.patch | 68 +++++++++++++++++++
>   1 file changed, 68 insertions(+)
>   create mode 100644 package/xr819-xradio/0001-main.c-fix-building-with-Linux-version-5.13.patch
>
> diff --git a/package/xr819-xradio/0001-main.c-fix-building-with-Linux-version-5.13.patch b/package/xr819-xradio/0001-main.c-fix-building-with-Linux-version-5.13.patch
> new file mode 100644
> index 0000000000..3b9742012e
> --- /dev/null
> +++ b/package/xr819-xradio/0001-main.c-fix-building-with-Linux-version-5.13.patch
> @@ -0,0 +1,68 @@
> +From 4873746fa9d42a8edbc1e192899e00c29ed3d32a Mon Sep 17 00:00:00 2001
> +From: Giulio Benetti <giulio.benetti@benettiengineering.com>
> +Date: Mon, 17 Jan 2022 12:26:00 +0100
> +Subject: [PATCH] main.c: fix building with Linux version >= 5.13
> +
> +of_get_mac_address() on Linux version >= 5.13 requires mac pointer as
> +second argument and return an int. So let's deal with it by checking linux
> +version to make it compatible with both Linux version >= 5.13 and not.
> +
> +Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
> +---
> + main.c | 17 +++++++++++++++++
> + 1 file changed, 17 insertions(+)
> +
> +diff --git a/main.c b/main.c
> +index b60e18d..06cb1f6 100644
> +--- a/main.c
> ++++ b/main.c
> +@@ -13,6 +13,7 @@
> + #include <net/cfg80211.h>
> + #include <linux/of_net.h>
> + #include <linux/mmc/sdio_func.h>
> ++#include <linux/version.h>
> +
> + #include "xradio.h"
> + #include "fwio.h"
> +@@ -499,8 +500,12 @@ int xradio_core_init(struct sdio_func* func)
> + 	int if_id;
> + 	struct ieee80211_hw *dev;
> + 	struct xradio_common *hw_priv;
> ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 13, 0)
> ++	unsigned char addr[ETH_ALEN];
> ++#else
> + 	unsigned char randomaddr[ETH_ALEN];
> + 	const unsigned char *addr = NULL;
> ++#endif
> +
> + 	//init xradio_common
> + 	dev = xradio_init_common(sizeof(struct xradio_common));
> +@@ -513,6 +518,16 @@ int xradio_core_init(struct sdio_func* func)
> + 	hw_priv->sdio_func = func;
> + 	sdio_set_drvdata(func, hw_priv);
> +
> ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 13, 0)
> ++	// fill in mac addresses
> ++	if (hw_priv->pdev->of_node) {
> ++		err = of_get_mac_address(hw_priv->pdev->of_node, addr);
> ++	}
> ++	if (err < 0) {
> ++		dev_warn(hw_priv->pdev, "no mac address provided, using random\n");
> ++		eth_random_addr(addr);
> ++	}
> ++#else
> + 	// fill in mac addresses
> + 	if (hw_priv->pdev->of_node) {
> + 		addr = of_get_mac_address(hw_priv->pdev->of_node);
> +@@ -522,6 +537,8 @@ int xradio_core_init(struct sdio_func* func)
> + 		eth_random_addr(randomaddr);
> + 		addr = randomaddr;
> + 	}
> ++#endif
> ++
> + 	memcpy(hw_priv->addresses[0].addr, addr, ETH_ALEN);
> + 	memcpy(hw_priv->addresses[1].addr, addr, ETH_ALEN);
> + 	hw_priv->addresses[1].addr[5] += 0x01;
> +--
> +2.25.1
> +

Hi Sergey,

On 18/01/22 18:45, Sergey Kuzminov wrote:
> Hi All, Giulio.
> I checked the patch, everything works.

Can you please place your:
Tested-by: Name Surname <e-mail>
?

Tested-by: Sergey Kuzminov <kuzminov.sergey81@gmail.com>

18.01.2022 20:53, Giulio Benetti пишет:
> Hi Sergey,
>
> On 18/01/22 18:45, Sergey Kuzminov wrote:
>> Hi All, Giulio.
>> I checked the patch, everything works.
>
> Can you please place your:
> Tested-by: Name Surname <e-mail>
> ?
>

Hi All,

please drop this patch since the local patch has been upstreamed:
https://github.com/fifteenhex/xradio/commit/4873746fa9d42a8edbc1e192899e00c29ed3d32a

So I'm going to send a package bump soon that I ask Sergey to test.

Thank you!
Best regards