vkr: remove some manual NULL checks

They are checked by the decoder since ee9db8b0 ("vkr: validate
non-optional pointers")

This reverts 44448cf7 ("vkr: fix some null dereferences") except for the
check for args->streamCount in vkr_dispatch_vkExecuteCommandStreamsMESA,
which is unnecessary but good to have.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Ryan Neph <ryanneph@google.com>

src/venus/vkr_instance.c

@@ -12,27 +12,18 @@
 #include "vkr_physical_device.h"
 
 static void
-vkr_dispatch_vkEnumerateInstanceVersion(struct vn_dispatch_context *dispatch,
+vkr_dispatch_vkEnumerateInstanceVersion(UNUSED struct vn_dispatch_context *dispatch,
                                         struct vn_command_vkEnumerateInstanceVersion *args)
 {
-   struct vkr_context *ctx = dispatch->data;
-
-   if (!args->pApiVersion) {
-      vkr_cs_decoder_set_fatal(&ctx->decoder);
-      return;
-   }
-
    vn_replace_vkEnumerateInstanceVersion_args_handle(args);
    args->ret = vkEnumerateInstanceVersion(args->pApiVersion);
 }
 
 static void
 vkr_dispatch_vkEnumerateInstanceExtensionProperties(
-   struct vn_dispatch_context *dispatch,
+   UNUSED struct vn_dispatch_context *dispatch,
    struct vn_command_vkEnumerateInstanceExtensionProperties *args)
 {
-   struct vkr_context *ctx = dispatch->data;
-
    VkExtensionProperties private_extensions[] = {
       {
          .extensionName = "VK_EXT_command_serialization",
@@ -42,11 +33,6 @@ vkr_dispatch_vkEnumerateInstanceExtensionProperties(
       },
    };
 
-   if (!args->pPropertyCount) {
-      vkr_cs_decoder_set_fatal(&ctx->decoder);
-      return;
-   }
-
    if (!args->pProperties) {
       *args->pPropertyCount = ARRAY_SIZE(private_extensions);
       args->ret = VK_SUCCESS;
@@ -98,11 +84,6 @@ vkr_dispatch_vkCreateInstance(struct vn_dispatch_context *dispatch,
       return;
    }
 
-   if (!args->pCreateInfo) {
-      vkr_cs_decoder_set_fatal(&ctx->decoder);
-      return;
-   }
-
    if (args->pCreateInfo->enabledLayerCount) {
       args->ret = VK_ERROR_LAYER_NOT_PRESENT;
       return;

src/venus/vkr_transport.c

@@ -20,11 +20,6 @@ vkr_dispatch_vkSetReplyCommandStreamMESA(
    struct vkr_context *ctx = dispatch->data;
    struct vkr_resource_attachment *att;
 
-   if (!args->pStream) {
-      vkr_cs_decoder_set_fatal(&ctx->decoder);
-      return;
-   }
-
    att = util_hash_table_get(ctx->resource_table,
                              uintptr_to_pointer(args->pStream->resourceId));
    if (!att) {
@@ -104,7 +99,7 @@ vkr_dispatch_vkExecuteCommandStreamsMESA(
 {
    struct vkr_context *ctx = dispatch->data;
 
-   if (!args->streamCount || !args->pStreams) {
+   if (!args->streamCount) {
       vkr_cs_decoder_set_fatal(&ctx->decoder);
       return;
    }
@@ -168,11 +163,6 @@ vkr_dispatch_vkCreateRingMESA(struct vn_dispatch_context *dispatch,
    size_t size;
    struct vkr_ring *ring;
 
-   if (!info) {
-      vkr_cs_decoder_set_fatal(&ctx->decoder);
-      return;
-   }
-
    att = util_hash_table_get(ctx->resource_table, uintptr_to_pointer(info->resourceId));
    if (!att) {
       vkr_cs_decoder_set_fatal(&ctx->decoder);
@@ -281,16 +271,9 @@ vkr_dispatch_vkWriteRingExtraMESA(struct vn_dispatch_context *dispatch,
 
 static void
 vkr_dispatch_vkGetVenusExperimentalFeatureData100000MESA(
-   struct vn_dispatch_context *dispatch,
+   UNUSED struct vn_dispatch_context *dispatch,
    struct vn_command_vkGetVenusExperimentalFeatureData100000MESA *args)
 {
-   struct vkr_context *ctx = dispatch->data;
-
-   if (!args->pDataSize) {
-      vkr_cs_decoder_set_fatal(&ctx->decoder);
-      return;
-   }
-
    const VkVenusExperimentalFeatures100000MESA features = {
       .memoryResourceAllocationSize = VK_TRUE,
    };