[ath:pending 19/19] drivers/net/wireless/ath/ath12k/ahb.c:1011:11: warning: cast to smaller integer type 'enum ath12k_hw_rev' from 'const void *'
kernel test robot
lkp at intel.com
Tue Mar 18 01:54:30 PDT 2025
Hi Balamurugan,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/ath/ath.git pending
head: 5bc3e6ca41aa7982442c7c2002d339f1a3343eae
commit: 5bc3e6ca41aa7982442c7c2002d339f1a3343eae [19/19] wifi: ath12k: enable ath12k AHB support
config: um-allmodconfig (https://download.01.org/0day-ci/archive/20250318/202503181631.ckurxYu4-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250318/202503181631.ckurxYu4-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503181631.ckurxYu4-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/wireless/ath/ath12k/ahb.c:7:
In file included from include/linux/dma-mapping.h:8:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:549:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
549 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:567:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
567 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/net/wireless/ath/ath12k/ahb.c:7:
In file included from include/linux/dma-mapping.h:8:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:585:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/net/wireless/ath/ath12k/ahb.c:7:
In file included from include/linux/dma-mapping.h:8:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:601:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
601 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:616:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
616 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:631:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
631 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:724:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
724 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:737:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
737 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:750:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
750 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:764:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
764 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:778:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
778 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:792:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
792 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/net/wireless/ath/ath12k/ahb.c:1011:11: warning: cast to smaller integer type 'enum ath12k_hw_rev' from 'const void *' [-Wvoid-pointer-to-enum-cast]
1011 | hw_rev = (enum ath12k_hw_rev)of_device_get_match_data(&pdev->dev);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
13 warnings generated.
vim +1011 drivers/net/wireless/ath/ath12k/ahb.c
940301a74ff47d Balamurugan S 2025-03-18 990
940301a74ff47d Balamurugan S 2025-03-18 991 static int ath12k_ahb_probe(struct platform_device *pdev)
940301a74ff47d Balamurugan S 2025-03-18 992 {
940301a74ff47d Balamurugan S 2025-03-18 993 struct ath12k_base *ab;
940301a74ff47d Balamurugan S 2025-03-18 994 const struct ath12k_hif_ops *hif_ops;
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 995 struct ath12k_ahb *ab_ahb;
940301a74ff47d Balamurugan S 2025-03-18 996 enum ath12k_hw_rev hw_rev;
dde5891d65c67e Sowmiya Sree Elavalagan 2025-03-18 997 u32 addr, userpd_id;
940301a74ff47d Balamurugan S 2025-03-18 998 int ret;
940301a74ff47d Balamurugan S 2025-03-18 999
940301a74ff47d Balamurugan S 2025-03-18 1000 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
940301a74ff47d Balamurugan S 2025-03-18 1001 if (ret) {
940301a74ff47d Balamurugan S 2025-03-18 1002 dev_err(&pdev->dev, "Failed to set 32-bit coherent dma\n");
940301a74ff47d Balamurugan S 2025-03-18 1003 return ret;
940301a74ff47d Balamurugan S 2025-03-18 1004 }
940301a74ff47d Balamurugan S 2025-03-18 1005
940301a74ff47d Balamurugan S 2025-03-18 1006 ab = ath12k_core_alloc(&pdev->dev, sizeof(struct ath12k_ahb),
940301a74ff47d Balamurugan S 2025-03-18 1007 ATH12K_BUS_AHB);
940301a74ff47d Balamurugan S 2025-03-18 1008 if (!ab)
940301a74ff47d Balamurugan S 2025-03-18 1009 return -ENOMEM;
940301a74ff47d Balamurugan S 2025-03-18 1010
940301a74ff47d Balamurugan S 2025-03-18 @1011 hw_rev = (enum ath12k_hw_rev)of_device_get_match_data(&pdev->dev);
940301a74ff47d Balamurugan S 2025-03-18 1012 switch (hw_rev) {
940301a74ff47d Balamurugan S 2025-03-18 1013 case ATH12K_HW_IPQ5332_HW10:
940301a74ff47d Balamurugan S 2025-03-18 1014 hif_ops = &ath12k_ahb_hif_ops_ipq5332;
dde5891d65c67e Sowmiya Sree Elavalagan 2025-03-18 1015 userpd_id = ATH12K_IPQ5332_USERPD_ID;
940301a74ff47d Balamurugan S 2025-03-18 1016 break;
940301a74ff47d Balamurugan S 2025-03-18 1017 default:
940301a74ff47d Balamurugan S 2025-03-18 1018 ret = -EOPNOTSUPP;
940301a74ff47d Balamurugan S 2025-03-18 1019 goto err_core_free;
940301a74ff47d Balamurugan S 2025-03-18 1020 }
940301a74ff47d Balamurugan S 2025-03-18 1021
940301a74ff47d Balamurugan S 2025-03-18 1022 ab->hif.ops = hif_ops;
940301a74ff47d Balamurugan S 2025-03-18 1023 ab->pdev = pdev;
940301a74ff47d Balamurugan S 2025-03-18 1024 ab->hw_rev = hw_rev;
940301a74ff47d Balamurugan S 2025-03-18 1025 platform_set_drvdata(pdev, ab);
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1026 ab_ahb = ath12k_ab_to_ahb(ab);
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1027 ab_ahb->ab = ab;
dde5891d65c67e Sowmiya Sree Elavalagan 2025-03-18 1028 ab_ahb->userpd_id = userpd_id;
940301a74ff47d Balamurugan S 2025-03-18 1029
940301a74ff47d Balamurugan S 2025-03-18 1030 /* Set fixed_mem_region to true for platforms that support fixed memory
940301a74ff47d Balamurugan S 2025-03-18 1031 * reservation from DT. If memory is reserved from DT for FW, ath12k driver
940301a74ff47d Balamurugan S 2025-03-18 1032 * need not to allocate memory.
940301a74ff47d Balamurugan S 2025-03-18 1033 */
940301a74ff47d Balamurugan S 2025-03-18 1034 if (!of_property_read_u32(ab->dev->of_node, "memory-region", &addr))
940301a74ff47d Balamurugan S 2025-03-18 1035 set_bit(ATH12K_FLAG_FIXED_MEM_REGION, &ab->dev_flags);
940301a74ff47d Balamurugan S 2025-03-18 1036
940301a74ff47d Balamurugan S 2025-03-18 1037 ret = ath12k_core_pre_init(ab);
940301a74ff47d Balamurugan S 2025-03-18 1038 if (ret)
940301a74ff47d Balamurugan S 2025-03-18 1039 goto err_core_free;
940301a74ff47d Balamurugan S 2025-03-18 1040
940301a74ff47d Balamurugan S 2025-03-18 1041 ret = ath12k_ahb_resource_init(ab);
940301a74ff47d Balamurugan S 2025-03-18 1042 if (ret)
940301a74ff47d Balamurugan S 2025-03-18 1043 goto err_core_free;
940301a74ff47d Balamurugan S 2025-03-18 1044
940301a74ff47d Balamurugan S 2025-03-18 1045 ret = ath12k_hal_srng_init(ab);
940301a74ff47d Balamurugan S 2025-03-18 1046 if (ret)
940301a74ff47d Balamurugan S 2025-03-18 1047 goto err_resource_deinit;
940301a74ff47d Balamurugan S 2025-03-18 1048
940301a74ff47d Balamurugan S 2025-03-18 1049 ret = ath12k_ce_alloc_pipes(ab);
940301a74ff47d Balamurugan S 2025-03-18 1050 if (ret) {
940301a74ff47d Balamurugan S 2025-03-18 1051 ath12k_err(ab, "failed to allocate ce pipes: %d\n", ret);
940301a74ff47d Balamurugan S 2025-03-18 1052 goto err_hal_srng_deinit;
940301a74ff47d Balamurugan S 2025-03-18 1053 }
940301a74ff47d Balamurugan S 2025-03-18 1054
940301a74ff47d Balamurugan S 2025-03-18 1055 ath12k_ahb_init_qmi_ce_config(ab);
940301a74ff47d Balamurugan S 2025-03-18 1056
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1057 ret = ath12k_ahb_configure_rproc(ab);
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1058 if (ret)
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1059 goto err_ce_free;
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1060
940301a74ff47d Balamurugan S 2025-03-18 1061 ret = ath12k_ahb_config_irq(ab);
940301a74ff47d Balamurugan S 2025-03-18 1062 if (ret) {
940301a74ff47d Balamurugan S 2025-03-18 1063 ath12k_err(ab, "failed to configure irq: %d\n", ret);
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1064 goto err_rproc_deconfigure;
940301a74ff47d Balamurugan S 2025-03-18 1065 }
940301a74ff47d Balamurugan S 2025-03-18 1066
940301a74ff47d Balamurugan S 2025-03-18 1067 ret = ath12k_core_init(ab);
940301a74ff47d Balamurugan S 2025-03-18 1068 if (ret) {
940301a74ff47d Balamurugan S 2025-03-18 1069 ath12k_err(ab, "failed to init core: %d\n", ret);
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1070 goto err_rproc_deconfigure;
940301a74ff47d Balamurugan S 2025-03-18 1071 }
940301a74ff47d Balamurugan S 2025-03-18 1072
940301a74ff47d Balamurugan S 2025-03-18 1073 return 0;
940301a74ff47d Balamurugan S 2025-03-18 1074
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1075 err_rproc_deconfigure:
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1076 ath12k_ahb_deconfigure_rproc(ab);
f0b813f6eec3b8 Sowmiya Sree Elavalagan 2025-03-18 1077
940301a74ff47d Balamurugan S 2025-03-18 1078 err_ce_free:
940301a74ff47d Balamurugan S 2025-03-18 1079 ath12k_ce_free_pipes(ab);
940301a74ff47d Balamurugan S 2025-03-18 1080
940301a74ff47d Balamurugan S 2025-03-18 1081 err_hal_srng_deinit:
940301a74ff47d Balamurugan S 2025-03-18 1082 ath12k_hal_srng_deinit(ab);
940301a74ff47d Balamurugan S 2025-03-18 1083
940301a74ff47d Balamurugan S 2025-03-18 1084 err_resource_deinit:
940301a74ff47d Balamurugan S 2025-03-18 1085 ath12k_ahb_resource_deinit(ab);
940301a74ff47d Balamurugan S 2025-03-18 1086
940301a74ff47d Balamurugan S 2025-03-18 1087 err_core_free:
940301a74ff47d Balamurugan S 2025-03-18 1088 ath12k_core_free(ab);
940301a74ff47d Balamurugan S 2025-03-18 1089 platform_set_drvdata(pdev, NULL);
940301a74ff47d Balamurugan S 2025-03-18 1090
940301a74ff47d Balamurugan S 2025-03-18 1091 return ret;
940301a74ff47d Balamurugan S 2025-03-18 1092 }
940301a74ff47d Balamurugan S 2025-03-18 1093
:::::: The code at line 1011 was first introduced by commit
:::::: 940301a74ff47d4a2bcdab6800991e875b728d5f wifi: ath12k: add AHB driver support for IPQ5332
:::::: TO: Balamurugan S <quic_bselvara at quicinc.com>
:::::: CC: Jeff Johnson <jeff.johnson at oss.qualcomm.com>
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