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

   1 From ad911365cac3723d1c00d048905a5e22ff4a10f3 Mon Sep 17 00:00:00 2001
   2 From: Stefan Kalscheuer <stefan@stklcode.de>
   3 Date: Sun, 18 Jun 2023 17:53:27 +0200
   4 Subject: [PATCH 1/2] remove uaccess and get_fs calls from PCIe for Kenel >=
   5  5.18
   6
   7 Remove the calls to deprecated get_fs and force_uaccess_* API for modern
   8 kernels.
   9
  10 The get_fs functionality and the transitional force_uaccess_* calls have
  11 been removed Kernel 5.18 [1] while read and write operations have been
  12 refactored, so the code can work on kernel- and userspace data without
  13 the need to shifting the boundary using set_fs().
  14
  15 [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=967747bbc084b93b54e66f9047d342232314cd25
  16
  17 Signed-off-by: Stefan Kalscheuer <stefan@stklcode.de>
  18 ---
  19  hif/pcie/pcie.c | 6 ++++--
  20  1 file changed, 4 insertions(+), 2 deletions(-)
  21
  22 --- a/hif/pcie/pcie.c
  23 +++ b/hif/pcie/pcie.c
  24 @@ -1439,7 +1439,9 @@ static void pcie_bf_mimo_ctrl_decode(str
  25         const char filename[] = "/tmp/BF_MIMO_Ctrl_Field_Output.txt";
  26         char str_buf[256];
  27         char *buf = &str_buf[0];
  28 +#if LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
  29         mm_segment_t oldfs;
  30 +#endif
  31
  32  #if LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)
  33         oldfs = get_fs();
  34 @@ -1447,7 +1449,7 @@ static void pcie_bf_mimo_ctrl_decode(str
  35  #elif LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
  36         oldfs = get_fs();
  37         set_fs(KERNEL_DS);
  38 -#else
  39 +#elif LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
  40         oldfs = force_uaccess_begin();
  41  #endif
  42
  43 @@ -1471,7 +1473,7 @@ static void pcie_bf_mimo_ctrl_decode(str
  44
  45  #if LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
  46         set_fs(oldfs);
  47 -#else
  48 +#elif LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
  49         force_uaccess_end(oldfs);
  50  #endif
  51  }