[l1k:smsc95xx_5.17 281/887] drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:731:1: warning: no previous prototype for 'vc_sm_cma_import_dmabuf_internal'
From: kernel test robot
Date: Fri Apr 08 2022 - 05:43:21 EST
tree: https://github.com/l1k/linux smsc95xx_5.17
head: 05d68ced287b30f62f18f95b5476135ef669804a
commit: 56d0cd616fe11877854ad1b0768b3be67bb30349 [281/887] staging: vc04_services: Add new vc-sm-cma driver
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220408/202204081731.p3iimqPz-lkp@xxxxxxxxx/config)
compiler: arceb-elf-gcc (GCC) 11.2.0
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
# https://github.com/l1k/linux/commit/56d0cd616fe11877854ad1b0768b3be67bb30349
git remote add l1k https://github.com/l1k/linux
git fetch --no-tags l1k smsc95xx_5.17
git checkout 56d0cd616fe11877854ad1b0768b3be67bb30349
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash drivers/char/broadcom/ drivers/gpio/ drivers/gpu/drm/vc4/ drivers/media/platform/rockchip/rkisp1/ drivers/staging/vc04_services/vc-sm-cma/
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/vc04_services/vc-sm-cma/vc_sm.c:731:1: warning: no previous prototype for 'vc_sm_cma_import_dmabuf_internal' [-Wmissing-prototypes]
731 | vc_sm_cma_import_dmabuf_internal(struct vc_sm_privdata_t *private,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:1114:5: warning: no previous prototype for 'vc_sm_cma_ioctl_alloc' [-Wmissing-prototypes]
1114 | int vc_sm_cma_ioctl_alloc(struct vc_sm_privdata_t *private,
| ^~~~~~~~~~~~~~~~~~~~~
drivers/staging/vc04_services/vc-sm-cma/vc_sm.c: In function 'cache_op_to_func':
drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:1267:24: error: 'dmac_flush_range' undeclared (first use in this function)
1267 | return dmac_flush_range;
| ^~~~~~~~~~~~~~~~
drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:1267:24: note: each undeclared identifier is reported only once for each function it appears in
vim +/vc_sm_cma_import_dmabuf_internal +731 drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
728
729 /* Import a dma_buf to be shared with VC. */
730 int
> 731 vc_sm_cma_import_dmabuf_internal(struct vc_sm_privdata_t *private,
732 struct dma_buf *dma_buf,
733 int fd,
734 struct dma_buf **imported_buf)
735 {
736 DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
737 struct vc_sm_buffer *buffer = NULL;
738 struct vc_sm_import import = { };
739 struct vc_sm_import_result result = { };
740 struct dma_buf_attachment *attach = NULL;
741 struct sg_table *sgt = NULL;
742 dma_addr_t dma_addr;
743 int ret = 0;
744 int status;
745
746 /* Setup our allocation parameters */
747 pr_debug("%s: importing dma_buf %p/fd %d\n", __func__, dma_buf, fd);
748
749 if (fd < 0)
750 get_dma_buf(dma_buf);
751 else
752 dma_buf = dma_buf_get(fd);
753
754 if (!dma_buf)
755 return -EINVAL;
756
757 attach = dma_buf_attach(dma_buf, &sm_state->pdev->dev);
758 if (IS_ERR(attach)) {
759 ret = PTR_ERR(attach);
760 goto error;
761 }
762
763 sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
764 if (IS_ERR(sgt)) {
765 ret = PTR_ERR(sgt);
766 goto error;
767 }
768
769 /* Verify that the address block is contiguous */
770 if (sgt->nents != 1) {
771 ret = -ENOMEM;
772 goto error;
773 }
774
775 /* Allocate local buffer to track this allocation. */
776 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
777 if (!buffer) {
778 ret = -ENOMEM;
779 goto error;
780 }
781
782 import.type = VC_SM_ALLOC_NON_CACHED;
783 dma_addr = sg_dma_address(sgt->sgl);
784 import.addr = (u32)dma_addr;
785 if ((import.addr & 0xC0000000) != 0xC0000000) {
786 pr_err("%s: Expecting an uncached alias for dma_addr %pad\n",
787 __func__, &dma_addr);
788 import.addr |= 0xC0000000;
789 }
790 import.size = sg_dma_len(sgt->sgl);
791 import.allocator = current->tgid;
792 import.kernel_id = get_kernel_id(buffer);
793
794 memcpy(import.name, VC_SM_RESOURCE_NAME_DEFAULT,
795 sizeof(VC_SM_RESOURCE_NAME_DEFAULT));
796
797 pr_debug("[%s]: attempt to import \"%s\" data - type %u, addr %pad, size %u.\n",
798 __func__, import.name, import.type, &dma_addr, import.size);
799
800 /* Allocate the videocore buffer. */
801 status = vc_sm_cma_vchi_import(sm_state->sm_handle, &import, &result,
802 &sm_state->int_trans_id);
803 if (status == -EINTR) {
804 pr_debug("[%s]: requesting import memory action restart (trans_id: %u)\n",
805 __func__, sm_state->int_trans_id);
806 ret = -ERESTARTSYS;
807 private->restart_sys = -EINTR;
808 private->int_action = VC_SM_MSG_TYPE_IMPORT;
809 goto error;
810 } else if (status || !result.res_handle) {
811 pr_debug("[%s]: failed to import memory on videocore (status: %u, trans_id: %u)\n",
812 __func__, status, sm_state->int_trans_id);
813 ret = -ENOMEM;
814 goto error;
815 }
816
817 mutex_init(&buffer->lock);
818 INIT_LIST_HEAD(&buffer->attachments);
819 memcpy(buffer->name, import.name,
820 min(sizeof(buffer->name), sizeof(import.name) - 1));
821
822 /* Keep track of the buffer we created. */
823 buffer->private = private;
824 buffer->vc_handle = result.res_handle;
825 buffer->size = import.size;
826 buffer->vpu_state = VPU_MAPPED;
827
828 buffer->imported = 1;
829 buffer->import.dma_buf = dma_buf;
830
831 buffer->import.attach = attach;
832 buffer->import.sgt = sgt;
833 buffer->dma_addr = dma_addr;
834 buffer->in_use = 1;
835 buffer->kernel_id = import.kernel_id;
836
837 /*
838 * We're done - we need to export a new dmabuf chaining through most
839 * functions, but enabling us to release our own internal references
840 * here.
841 */
842 exp_info.ops = &dma_buf_import_ops;
843 exp_info.size = import.size;
844 exp_info.flags = O_RDWR;
845 exp_info.priv = buffer;
846
847 buffer->dma_buf = dma_buf_export(&exp_info);
848 if (IS_ERR(buffer->dma_buf)) {
849 ret = PTR_ERR(buffer->dma_buf);
850 goto error;
851 }
852
853 vc_sm_add_resource(private, buffer);
854
855 *imported_buf = buffer->dma_buf;
856
857 return 0;
858
859 error:
860 if (result.res_handle) {
861 struct vc_sm_free_t free = { result.res_handle, 0 };
862
863 vc_sm_cma_vchi_free(sm_state->sm_handle, &free,
864 &sm_state->int_trans_id);
865 }
866 free_kernel_id(import.kernel_id);
867 kfree(buffer);
868 if (sgt)
869 dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL);
870 if (attach)
871 dma_buf_detach(dma_buf, attach);
872 dma_buf_put(dma_buf);
873 return ret;
874 }
875
--
0-DAY CI Kernel Test Service
https://01.org/lkp