OpenWrt – Rev 4
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From 068cfca9e8c54902c45b8c35b49191c766d346c9 Mon Sep 17 00:00:00 2001
From: Sugizaki Yukimasa <i.can.speak.c.and.basic@gmail.com>
Date: Wed, 10 Jan 2018 04:32:20 +0900
Subject: [PATCH 155/454] vcsm: Add no-op cache operation constant
Signed-off-by: Sugizaki Yukimasa <i.can.speak.c.and.basic@gmail.com>
---
drivers/char/broadcom/vc_sm/vmcs_sm.c | 10 ++++++++++
include/linux/broadcom/vmcs_sm_ioctl.h | 1 +
2 files changed, 11 insertions(+)
--- a/drivers/char/broadcom/vc_sm/vmcs_sm.c
+++ b/drivers/char/broadcom/vc_sm/vmcs_sm.c
@@ -1269,6 +1269,8 @@ static int clean_invalid_mem_2d(const vo
}
switch (cache_op) {
+ case VCSM_CACHE_OP_NOP:
+ return 0;
case VCSM_CACHE_OP_INV:
op_fn = dmac_inv_range;
break;
@@ -1312,6 +1314,8 @@ static int clean_invalid_resource(const
return 0;
switch (cache_op) {
+ case VCSM_CACHE_OP_NOP:
+ return 0;
case VCSM_CACHE_OP_INV:
stat_attempt = INVALID;
stat_failure = INVALID_FAIL;
@@ -2936,6 +2940,9 @@ static long vc_sm_ioctl(struct file *fil
goto out;
}
for (i = 0; i < sizeof(ioparam.s) / sizeof(*ioparam.s); i++) {
+ if (ioparam.s[i].cmd == VCSM_CACHE_OP_NOP)
+ break;
+
/* Locate resource from GUID. */
resource =
vmcs_sm_acquire_resource(file_data, ioparam.s[i].handle);
@@ -2989,6 +2996,9 @@ static long vc_sm_ioctl(struct file *fil
ret = clean_invalid_mem_2d((void __user*) op->start_address,
op->block_count, op->block_size,
op->inter_block_stride, op->invalidate_mode);
+ if (op->invalidate_mode == VCSM_CACHE_OP_NOP)
+ continue;
+
if (ret)
break;
}
--- a/include/linux/broadcom/vmcs_sm_ioctl.h
+++ b/include/linux/broadcom/vmcs_sm_ioctl.h
@@ -172,6 +172,7 @@ struct vmcs_sm_ioctl_cache {
* Cache functions to be set to struct vmcs_sm_ioctl_clean_invalid cmd and
* vmcs_sm_ioctl_clean_invalid2 invalidate_mode.
*/
+#define VCSM_CACHE_OP_NOP 0x00
#define VCSM_CACHE_OP_INV 0x01
#define VCSM_CACHE_OP_CLEAN 0x02
#define VCSM_CACHE_OP_FLUSH 0x03