Merge tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa fixes and cleanups from Max Filippov:

 - don't allocate memory in platform_setup as the memory allocator is
   not initialized at that point yet;

 - remove unnecessary ifeq KBUILD_SRC from arch/xtensa/Makefile;

 - enable SG chaining in arch/xtensa/Kconfig.

* tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: enable SG chaining in Kconfig
  xtensa: remove unnecessary KBUILD_SRC ifeq conditional
  xtensa: ISS: don't allocate memory in platform_setup

3 files changed, 16 insertions, 14 deletions

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 04d038f3b6fa..b9ad83a0ee5d 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -4,6 +4,7 @@ config ZONE_DMA
 
 config XTENSA
         def_bool y
+        select ARCH_HAS_SG_CHAIN
         select ARCH_HAS_SYNC_DMA_FOR_CPU
         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
         select ARCH_NO_COHERENT_DMA_MMAP if !MMU
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 295c120ed099..d67e30faff9c 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -64,11 +64,7 @@ endif
 vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
 plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
 
-ifeq ($(KBUILD_SRC),)
-KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
-else
 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
-endif
 
 KBUILD_DEFCONFIG := iss_defconfig
 
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index f4bbb28026f8..58709e89a8ed 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -78,23 +78,28 @@ static struct notifier_block iss_panic_block = {
 
 void __init platform_setup(char **p_cmdline)
 {
+        static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
+        static char cmdline[COMMAND_LINE_SIZE] __initdata;
         int argc = simc_argc();
         int argv_size = simc_argv_size();
 
         if (argc > 1) {
-                void **argv = alloc_bootmem(argv_size);
-                char *cmdline = alloc_bootmem(argv_size);
-                int i;
+                if (argv_size > sizeof(argv)) {
+                        pr_err("%s: command line too long: argv_size = %d\n",
+                               __func__, argv_size);
+                } else {
+                        int i;
 
-                cmdline[0] = 0;
-                simc_argv((void *)argv);
+                        cmdline[0] = 0;
+                        simc_argv((void *)argv);
 
-                for (i = 1; i < argc; ++i) {
-                        if (i > 1)
-                                strcat(cmdline, " ");
-                        strcat(cmdline, argv[i]);
+                        for (i = 1; i < argc; ++i) {
+                                if (i > 1)
+                                        strcat(cmdline, " ");
+                                strcat(cmdline, argv[i]);
+                        }
+                        *p_cmdline = cmdline;
                 }
-                *p_cmdline = cmdline;
         }
 
         atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);