tree:
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
head: 9a360a7cae11461ccd933a9ea366b0dcb3afadb0
commit: ac286428c69fb3dc2924ce0ad5a11b5577b2f5da [187/195] xhci: dbc: don't use
generic xhci ring allocation functions for dbc.
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
reproduce (this is a W=1 build):
git checkout ac286428c69fb3dc2924ce0ad5a11b5577b2f5da
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> drivers/usb/host/xhci-dbgcap.c:410:1: warning: no previous
prototype for 'xhci_dbc_ring_alloc' [-Wmissing-prototypes]
410 |
xhci_dbc_ring_alloc(struct device *dev, enum xhci_ring_type type, gfp_t flags)
| ^~~~~~~~~~~~~~~~~~~
drivers/usb/host/xhci-dbgcap.c: In function 'xhci_dbc_mem_cleanup':
drivers/usb/host/xhci-dbgcap.c:530:18: warning: unused variable 'dev'
[-Wunused-variable]
530 | struct device *dev = xhci_to_hcd(xhci)->self.controller;
| ^~~
vim +/xhci_dbc_ring_alloc +410 drivers/usb/host/xhci-dbgcap.c
408
409 struct xhci_ring *
410 xhci_dbc_ring_alloc(struct device *dev, enum xhci_ring_type type,
gfp_t flags)
411 {
412 struct xhci_ring *ring;
413 struct xhci_segment *seg;
414 dma_addr_t dma;
415
416 ring = kzalloc(sizeof(*ring), flags);
417 if (!ring)
418 return NULL;
419
420 ring->num_segs = 1;
421 ring->type = type;
422
423 seg = kzalloc(sizeof(*seg), flags);
424 if (!seg)
425 goto seg_fail;
426
427 ring->first_seg = seg;
428 ring->last_seg = seg;
429 seg->next = seg;
430
431 seg->trbs = dma_alloc_coherent(dev, TRB_SEGMENT_SIZE, &dma, flags);
432 if (!seg->trbs)
433 goto dma_fail;
434
435 seg->dma = dma;
436
437 /* Only event ring does not use link TRB */
438 if (type != TYPE_EVENT) {
439 union xhci_trb *trb = &seg->trbs[TRBS_PER_SEGMENT - 1];
440
441 trb->link.segment_ptr = cpu_to_le64(dma);
442 trb->link.control = cpu_to_le32(LINK_TOGGLE | TRB_TYPE(TRB_LINK));
443 }
444 INIT_LIST_HEAD(&ring->td_list);
445 xhci_initialize_ring_info(ring, 1);
446 return ring;
447 dma_fail:
448 kfree(seg);
449 seg_fail:
450 kfree(ring);
451 return NULL;
452 }
453
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org