target/linux/brcm2708/patches-4.14/950-0155-vcsm-Add-no-op-cache-operation-constant.patch

   1 From 068cfca9e8c54902c45b8c35b49191c766d346c9 Mon Sep 17 00:00:00 2001
   2 From: Sugizaki Yukimasa <i.can.speak.c.and.basic@gmail.com>
   3 Date: Wed, 10 Jan 2018 04:32:20 +0900
   4 Subject: [PATCH 155/454] vcsm: Add no-op cache operation constant
   5
   6 Signed-off-by: Sugizaki Yukimasa <i.can.speak.c.and.basic@gmail.com>
   7 ---
   8  drivers/char/broadcom/vc_sm/vmcs_sm.c  | 10 ++++++++++
   9  include/linux/broadcom/vmcs_sm_ioctl.h |  1 +
  10  2 files changed, 11 insertions(+)
  11
  12 --- a/drivers/char/broadcom/vc_sm/vmcs_sm.c
  13 +++ b/drivers/char/broadcom/vc_sm/vmcs_sm.c
  14 @@ -1269,6 +1269,8 @@ static int clean_invalid_mem_2d(const vo
  15         }
  16
  17         switch (cache_op) {
  18 +       case VCSM_CACHE_OP_NOP:
  19 +               return 0;
  20         case VCSM_CACHE_OP_INV:
  21                 op_fn = dmac_inv_range;
  22                 break;
  23 @@ -1312,6 +1314,8 @@ static int clean_invalid_resource(const
  24                 return 0;
  25
  26         switch (cache_op) {
  27 +       case VCSM_CACHE_OP_NOP:
  28 +               return 0;
  29         case VCSM_CACHE_OP_INV:
  30                 stat_attempt = INVALID;
  31                 stat_failure = INVALID_FAIL;
  32 @@ -2936,6 +2940,9 @@ static long vc_sm_ioctl(struct file *fil
  33                                 goto out;
  34                         }
  35                         for (i = 0; i < sizeof(ioparam.s) / sizeof(*ioparam.s); i++) {
  36 +                               if (ioparam.s[i].cmd == VCSM_CACHE_OP_NOP)
  37 +                                       break;
  38 +
  39                                 /* Locate resource from GUID. */
  40                                 resource =
  41                                         vmcs_sm_acquire_resource(file_data, ioparam.s[i].handle);
  42 @@ -2989,6 +2996,9 @@ static long vc_sm_ioctl(struct file *fil
  43                                         ret = clean_invalid_mem_2d((void __user*) op->start_address,
  44                                                         op->block_count, op->block_size,
  45                                                         op->inter_block_stride, op->invalidate_mode);
  46 +                                       if (op->invalidate_mode == VCSM_CACHE_OP_NOP)
  47 +                                               continue;
  48 +
  49                                         if (ret)
  50                                                 break;
  51                                 }
  52 --- a/include/linux/broadcom/vmcs_sm_ioctl.h
  53 +++ b/include/linux/broadcom/vmcs_sm_ioctl.h
  54 @@ -172,6 +172,7 @@ struct vmcs_sm_ioctl_cache {
  55   * Cache functions to be set to struct vmcs_sm_ioctl_clean_invalid cmd and
  56   * vmcs_sm_ioctl_clean_invalid2 invalidate_mode.
  57   */
  58 +#define VCSM_CACHE_OP_NOP       0x00
  59  #define VCSM_CACHE_OP_INV       0x01
  60  #define VCSM_CACHE_OP_CLEAN     0x02
  61  #define VCSM_CACHE_OP_FLUSH     0x03