openwrt/package/kernel/mwlwifi/patches/006-remove-uaccess-and-get_fs-calls-from-PCIe-for-Kenel-.patch

From ad911365cac3723d1c00d048905a5e22ff4a10f3 Mon Sep 17 00:00:00 2001
From: Stefan Kalscheuer <stefan@stklcode.de>
Date: Sun, 18 Jun 2023 17:53:27 +0200
Subject: [PATCH 1/2] remove uaccess and get_fs calls from PCIe for Kenel >=
 5.18

Remove the calls to deprecated get_fs and force_uaccess_* API for modern
kernels.

The get_fs functionality and the transitional force_uaccess_* calls have
been removed Kernel 5.18 [1] while read and write operations have been
refactored, so the code can work on kernel- and userspace data without
the need to shifting the boundary using set_fs().

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=967747bbc084b93b54e66f9047d342232314cd25

Signed-off-by: Stefan Kalscheuer <stefan@stklcode.de>
---
 hif/pcie/pcie.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/hif/pcie/pcie.c
+++ b/hif/pcie/pcie.c
@@ -1439,7 +1439,9 @@ static void pcie_bf_mimo_ctrl_decode(str
 	const char filename[] = "/tmp/BF_MIMO_Ctrl_Field_Output.txt";
 	char str_buf[256];
 	char *buf = &str_buf[0];
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
 	mm_segment_t oldfs;
+#endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)
 	oldfs = get_fs();
@@ -1447,7 +1449,7 @@ static void pcie_bf_mimo_ctrl_decode(str
 #elif LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
-#else
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
 	oldfs = force_uaccess_begin();
 #endif
 
@@ -1471,7 +1473,7 @@ static void pcie_bf_mimo_ctrl_decode(str
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
 	set_fs(oldfs);
-#else
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
 	force_uaccess_end(oldfs);
 #endif
 }