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Message-ID: <202006180152.gHGU9Nyr%lkp@intel.com>
Date: Thu, 18 Jun 2020 01:56:55 +0800
From: kernel test robot <lkp@...el.com>
To: Leo Liu <leo.liu@....com>
Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
linux-kernel@...r.kernel.org,
Alex Deucher <alexander.deucher@....com>
Subject: drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:451:5: warning: no previous
prototype for function 'jpeg_v1_0_early_init'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 69119673bd50b176ded34032fadd41530fb5af21
commit: bb0db70f3f75e0d994a627f22c3ff2d8ec6191c4 drm/amdgpu: separate JPEG1.0 code out from VCN1.0
date: 7 months ago
config: s390-randconfig-r004-20200617 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 487ca07fcc75d52755c9fe2ee05bcb3b6eeeec44)
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 s390 cross compiling tool for clang build
# apt-get install binutils-s390-linux-gnu
git checkout bb0db70f3f75e0d994a627f22c3ff2d8ec6191c4
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33:
In file included from include/drm/drm_crtc.h:31:
In file included from include/linux/fb.h:17:
In file included from arch/s390/include/asm/io.h:76:
include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:118:21: note: expanded from macro '__swab32'
___constant_swab32(x) : ^
include/uapi/linux/swab.h:19:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x0000ff00UL) << 8) | ^
In file included from drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:24:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:57:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33:
In file included from include/drm/drm_crtc.h:31:
In file included from include/linux/fb.h:17:
In file included from arch/s390/include/asm/io.h:76:
include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:118:21: note: expanded from macro '__swab32'
___constant_swab32(x) : ^
include/uapi/linux/swab.h:20:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | ^
In file included from drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:24:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:57:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33:
In file included from include/drm/drm_crtc.h:31:
In file included from include/linux/fb.h:17:
In file included from arch/s390/include/asm/io.h:76:
include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:118:21: note: expanded from macro '__swab32'
___constant_swab32(x) : ^
include/uapi/linux/swab.h:21:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0xff000000UL) >> 24)))
^
In file included from drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:24:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:57:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33:
In file included from include/drm/drm_crtc.h:31:
In file included from include/linux/fb.h:17:
In file included from arch/s390/include/asm/io.h:76:
include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:119:12: note: expanded from macro '__swab32'
__fswab32(x))
^
In file included from drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:24:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:57:
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33:
In file included from include/drm/drm_crtc.h:31:
In file included from include/linux/fb.h:17:
In file included from arch/s390/include/asm/io.h:76:
include/asm-generic/io.h:503:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:513:46: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew(cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:523:46: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel(cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:585:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:593:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:601:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:610:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:619:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:628:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:451:5: warning: no previous prototype for function 'jpeg_v1_0_early_init' [-Wmissing-prototypes]
int jpeg_v1_0_early_init(void *handle)
^
drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:451:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int jpeg_v1_0_early_init(void *handle)
^
static
>> drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:469:5: warning: no previous prototype for function 'jpeg_v1_0_sw_init' [-Wmissing-prototypes]
int jpeg_v1_0_sw_init(void *handle)
^
drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:469:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int jpeg_v1_0_sw_init(void *handle)
^
static
>> drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:499:6: warning: no previous prototype for function 'jpeg_v1_0_sw_fini' [-Wmissing-prototypes]
void jpeg_v1_0_sw_fini(void *handle)
^
drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:499:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void jpeg_v1_0_sw_fini(void *handle)
^
static
>> drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:513:6: warning: no previous prototype for function 'jpeg_v1_0_start' [-Wmissing-prototypes]
void jpeg_v1_0_start(struct amdgpu_device *adev, int mode)
^
drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c:513:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void jpeg_v1_0_start(struct amdgpu_device *adev, int mode)
^
static
24 warnings generated.
vim +/jpeg_v1_0_early_init +451 drivers/gpu/drm/amd/amdgpu/jpeg_v1_0.c
443
444 /**
445 * jpeg_v1_0_early_init - set function pointers
446 *
447 * @handle: amdgpu_device pointer
448 *
449 * Set ring and irq function pointers
450 */
> 451 int jpeg_v1_0_early_init(void *handle)
452 {
453 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
454
455 adev->jpeg.num_jpeg_inst = 1;
456
457 jpeg_v1_0_set_dec_ring_funcs(adev);
458 jpeg_v1_0_set_irq_funcs(adev);
459
460 return 0;
461 }
462
463 /**
464 * jpeg_v1_0_sw_init - sw init for JPEG block
465 *
466 * @handle: amdgpu_device pointer
467 *
468 */
> 469 int jpeg_v1_0_sw_init(void *handle)
470 {
471 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
472 struct amdgpu_ring *ring;
473 int r;
474
475 /* JPEG TRAP */
476 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_VCN, 126, &adev->jpeg.inst->irq);
477 if (r)
478 return r;
479
480 ring = &adev->jpeg.inst->ring_dec;
481 sprintf(ring->name, "jpeg_dec");
482 r = amdgpu_ring_init(adev, ring, 512, &adev->jpeg.inst->irq, 0);
483 if (r)
484 return r;
485
486 adev->jpeg.internal.jpeg_pitch = adev->jpeg.inst->external.jpeg_pitch =
487 SOC15_REG_OFFSET(JPEG, 0, mmUVD_JPEG_PITCH);
488
489 return 0;
490 }
491
492 /**
493 * jpeg_v1_0_sw_fini - sw fini for JPEG block
494 *
495 * @handle: amdgpu_device pointer
496 *
497 * JPEG free up sw allocation
498 */
> 499 void jpeg_v1_0_sw_fini(void *handle)
500 {
501 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
502
503 amdgpu_ring_fini(&adev->jpeg.inst[0].ring_dec);
504 }
505
506 /**
507 * jpeg_v1_0_start - start JPEG block
508 *
509 * @adev: amdgpu_device pointer
510 *
511 * Setup and start the JPEG block
512 */
> 513 void jpeg_v1_0_start(struct amdgpu_device *adev, int mode)
514 {
515 struct amdgpu_ring *ring = &adev->jpeg.inst->ring_dec;
516
517 if (mode == 0) {
518 WREG32_SOC15(JPEG, 0, mmUVD_LMI_JRBC_RB_VMID, 0);
519 WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_CNTL, UVD_JRBC_RB_CNTL__RB_NO_FETCH_MASK |
520 UVD_JRBC_RB_CNTL__RB_RPTR_WR_EN_MASK);
521 WREG32_SOC15(JPEG, 0, mmUVD_LMI_JRBC_RB_64BIT_BAR_LOW, lower_32_bits(ring->gpu_addr));
522 WREG32_SOC15(JPEG, 0, mmUVD_LMI_JRBC_RB_64BIT_BAR_HIGH, upper_32_bits(ring->gpu_addr));
523 WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_RPTR, 0);
524 WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_WPTR, 0);
525 } WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_CNTL, UVD_JRBC_RB_CNTL__RB_RPTR_WR_EN_MASK);
526
527 /* initialize wptr */
528 ring->wptr = RREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_WPTR);
529
530 /* copy patch commands to the jpeg ring */
531 jpeg_v1_0_decode_ring_set_patch_ring(ring,
532 (ring->wptr + ring->max_dw * amdgpu_sched_hw_submission));
533 }
534
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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