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 diff --git a/hif/pcie/pcie.c b/hif/pcie/pcie.c
  23 index 24453b6..bee1cc5 100644
  24 --- a/hif/pcie/pcie.c
  25 +++ b/hif/pcie/pcie.c
  26 @@ -1294,7 +1294,9 @@ static void pcie_bf_mimo_ctrl_decode(struct mwl_priv *priv,
  27         const char filename[] = "/tmp/BF_MIMO_Ctrl_Field_Output.txt";
  28         char str_buf[256];
  29         char *buf = &str_buf[0];
  30 +#if LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
  31         mm_segment_t oldfs;
  32 +#endif
  33
  34  #if LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)
  35         oldfs = get_fs();
  36 @@ -1302,7 +1304,7 @@ static void pcie_bf_mimo_ctrl_decode(struct mwl_priv *priv,
  37  #elif LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
  38         oldfs = get_fs();
  39         set_fs(KERNEL_DS);
  40 -#else
  41 +#elif LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
  42         oldfs = force_uaccess_begin();
  43  #endif
  44
  45 @@ -1326,7 +1328,7 @@ static void pcie_bf_mimo_ctrl_decode(struct mwl_priv *priv,
  46
  47  #if LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
  48         set_fs(oldfs);
  49 -#else
  50 +#elif LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
  51         force_uaccess_end(oldfs);
  52  #endif
  53  }