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Xtensa fixes and cleanups for v4.19:

Browse Source 
- 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.
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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
This commit is contained in:
Linus Torvalds 2018-09-14 12:56:42 -10:00
commit eae4f8851f
3 changed files with 16 additions and 14 deletions
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1
arch/xtensa/Kconfig
View File

@ -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

4
arch/xtensa/Makefile
View File

@ -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

25
arch/xtensa/platforms/iss/setup.c
View File

@ -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);