drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:34:6: warning: no previous prototype for function 'ia_css_isys_ibuf_rmgr_init'

From: kernel test robot
Date: Sun Dec 27 2020 - 07:29:36 EST

Hi Mauro,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f838f8d2b694cf9d524dc4423e9dd2db13892f3f
commit: 5b552b198c2557295becd471bff53bb520fefee5 media: atomisp: re-enable warnings again
date: 7 months ago
config: x86_64-randconfig-a003-20201222 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b552b198c2557295becd471bff53bb520fefee5
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 5b552b198c2557295becd471bff53bb520fefee5
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:34:6: warning: no previous prototype for function 'ia_css_isys_ibuf_rmgr_init' [-Wmissing-prototypes]
void ia_css_isys_ibuf_rmgr_init(void)
^
drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:34:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void ia_css_isys_ibuf_rmgr_init(void)
^
static
>> drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:40:6: warning: no previous prototype for function 'ia_css_isys_ibuf_rmgr_uninit' [-Wmissing-prototypes]
void ia_css_isys_ibuf_rmgr_uninit(void)
^
drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:40:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void ia_css_isys_ibuf_rmgr_uninit(void)
^
static
>> drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:46:6: warning: no previous prototype for function 'ia_css_isys_ibuf_rmgr_acquire' [-Wmissing-prototypes]
bool ia_css_isys_ibuf_rmgr_acquire(
^
drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:46:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
bool ia_css_isys_ibuf_rmgr_acquire(
^
static
>> drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:106:6: warning: no previous prototype for function 'ia_css_isys_ibuf_rmgr_release' [-Wmissing-prototypes]
void ia_css_isys_ibuf_rmgr_release(
^
drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c:106:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void ia_css_isys_ibuf_rmgr_release(
^
static
4 warnings generated.


vim +/ia_css_isys_ibuf_rmgr_init +34 drivers/staging/media/atomisp/pci/runtime/isys/src/ibuf_ctrl_rmgr.c

ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 33
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 @34 void ia_css_isys_ibuf_rmgr_init(void)
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 35 {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 36 memset(&ibuf_rsrc, 0, sizeof(ibuf_rsrc));
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 37 ibuf_rsrc.free_size = MAX_INPUT_BUFFER_SIZE;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 38 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 39
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 @40 void ia_css_isys_ibuf_rmgr_uninit(void)
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 41 {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 42 memset(&ibuf_rsrc, 0, sizeof(ibuf_rsrc));
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 43 ibuf_rsrc.free_size = MAX_INPUT_BUFFER_SIZE;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 44 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 45
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 @46 bool ia_css_isys_ibuf_rmgr_acquire(
bdfe0beb95eebc8 drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 47 u32 size,
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 48 uint32_t *start_addr)
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 49 {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 50 bool retval = false;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 51 bool input_buffer_found = false;
bdfe0beb95eebc8 drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 52 u32 aligned_size;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 53 ibuf_handle_t *handle = NULL;
bdfe0beb95eebc8 drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 54 u16 i;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 55
bdfe0beb95eebc8 drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 56 assert(start_addr);
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 57 assert(size > 0);
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 58
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 59 aligned_size = (size + (IBUF_ALIGN - 1)) & ~(IBUF_ALIGN - 1);
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 60
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 61 /* Check if there is an available un-used handle with the size
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 62 * that will fulfill the request.
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 63 */
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 64 if (ibuf_rsrc.num_active < ibuf_rsrc.num_allocated) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 65 for (i = 0; i < ibuf_rsrc.num_allocated; i++) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 66 handle = getHandle(i);
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 67 if (!handle->active) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 68 if (handle->size >= aligned_size) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 69 handle->active = true;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 70 input_buffer_found = true;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 71 ibuf_rsrc.num_active++;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 72 break;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 73 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 74 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 75 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 76 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 77
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 78 if (!input_buffer_found) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 79 /* There were no available handles that fulfilled the
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 80 * request. Allocate a new handle with the requested size.
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 81 */
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 82 if ((ibuf_rsrc.num_allocated < MAX_IBUF_HANDLES) &&
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 83 (ibuf_rsrc.free_size >= aligned_size)) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 84 handle = getHandle(ibuf_rsrc.num_allocated);
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 85 handle->start_addr = ibuf_rsrc.free_start_addr;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 86 handle->size = aligned_size;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 87 handle->active = true;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 88
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 89 ibuf_rsrc.free_start_addr += aligned_size;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 90 ibuf_rsrc.free_size -= aligned_size;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 91 ibuf_rsrc.num_active++;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 92 ibuf_rsrc.num_allocated++;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 93
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 94 input_buffer_found = true;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 95 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 96 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 97
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 98 if (input_buffer_found && handle) {
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 99 *start_addr = handle->start_addr;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 100 retval = true;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 101 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 102
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 103 return retval;
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 104 }
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 105
ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/ibuf_ctrl_rmgr.c Mauro Carvalho Chehab 2020-04-19 @106 void ia_css_isys_ibuf_rmgr_release(

:::::: The code at line 34 was first introduced by commit
:::::: ad85094b293e40e7a2f831b0311a389d952ebd5e Revert "media: staging: atomisp: Remove driver"

:::::: TO: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
:::::: CC: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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