tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: 3d22d7c1190db3209b644b8a13a75a9802b4587f commit: b3a8771f409b74c42deee28aee3092fc5d2c8dab [22/23] fw_cfg: write vmcoreinfo details reproduce: # apt-get install sparse git checkout b3a8771f409b74c42deee28aee3092fc5d2c8dab make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) drivers/firmware/qemu_fw_cfg.c:108:28: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:108:28: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:108:28: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:108:28: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:108:28: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:108:28: sparse: cast to restricted __be32 >> drivers/firmware/qemu_fw_cfg.c:130:36: sparse: incorrect type in initializer (different base types) @@ expected unsigned long long address @@ got gned] address @@ drivers/firmware/qemu_fw_cfg.c:130:36: expected unsigned long long address drivers/firmware/qemu_fw_cfg.c:130:36: got restricted __be64 drivers/firmware/qemu_fw_cfg.c:131:27: sparse: incorrect type in initializer (different base types) @@ expected unsigned int length @@ got ed int length @@ drivers/firmware/qemu_fw_cfg.c:131:27: expected unsigned int length drivers/firmware/qemu_fw_cfg.c:131:27: got restricted __be32 <noident> drivers/firmware/qemu_fw_cfg.c:132:28: sparse: incorrect type in initializer (different base types) @@ expected unsigned int control @@ got ed int control @@ drivers/firmware/qemu_fw_cfg.c:132:28: expected unsigned int control drivers/firmware/qemu_fw_cfg.c:132:28: got restricted __be32 <noident> drivers/firmware/qemu_fw_cfg.c:142:13: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:142:13: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:142:13: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:142:13: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:142:13: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:142:13: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:96:33: sparse: restricted __be16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:52: sparse: restricted __le16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:33: sparse: restricted __be16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:52: sparse: restricted __le16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:33: sparse: restricted __be16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:52: sparse: restricted __le16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:33: sparse: restricted __be16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:52: sparse: restricted __le16 degrades to integer drivers/firmware/qemu_fw_cfg.c:660:17: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:660:17: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:660:17: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:660:17: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:660:17: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:660:17: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:96:33: sparse: restricted __be16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:52: sparse: restricted __le16 degrades to integer drivers/firmware/qemu_fw_cfg.c:670:31: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:670:31: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:670:31: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:670:31: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:670:31: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:670:31: sparse: cast to restricted __be32 drivers/firmware/qemu_fw_cfg.c:671:33: sparse: cast to restricted __be16 drivers/firmware/qemu_fw_cfg.c:671:33: sparse: cast to restricted __be16 drivers/firmware/qemu_fw_cfg.c:671:33: sparse: cast to restricted __be16 drivers/firmware/qemu_fw_cfg.c:671:33: sparse: cast to restricted __be16 drivers/firmware/qemu_fw_cfg.c:96:33: sparse: restricted __be16 degrades to integer drivers/firmware/qemu_fw_cfg.c:96:52: sparse: restricted __le16 degrades to integer drivers/firmware/qemu_fw_cfg.c:717:22: sparse: cast to restricted __le32 vim +130 drivers/firmware/qemu_fw_cfg.c 103 104 /* qemu fw_cfg device is sync today, but spec says it may become async */ 105 static void fw_cfg_wait_for_control(struct fw_cfg_dma *d) 106 { 107 do { > 108 u32 ctrl = be32_to_cpu(READ_ONCE(d->control)); 109 110 if ((ctrl & ~FW_CFG_DMA_CTL_ERROR) == 0) 111 return; 112 113 usleep_range(50, 100); 114 } while (true); 115 } 116 117 static ssize_t fw_cfg_dma_transfer(void *address, u32 length, u32 control) 118 { 119 phys_addr_t dma; 120 struct fw_cfg_dma *d = NULL; 121 ssize_t ret = length; 122 123 d = kmalloc(sizeof(*d), GFP_KERNEL); 124 if (!d) { 125 ret = -ENOMEM; 126 goto end; 127 } 128 129 *d = (struct fw_cfg_dma) { > 130 .address = address ? cpu_to_be64(virt_to_phys(address)) : 0, 131 .length = cpu_to_be32(length), 132 .control = cpu_to_be32(control) 133 }; 134 135 dma = virt_to_phys(d); 136 137 iowrite32be((u64)dma >> 32, fw_cfg_reg_dma); 138 iowrite32be(dma, fw_cfg_reg_dma + 4); 139 140 fw_cfg_wait_for_control(d); 141 142 if (be32_to_cpu(READ_ONCE(d->control)) & FW_CFG_DMA_CTL_ERROR) { 143 ret = -EIO; 144 } 145 146 end: 147 kfree(d); 148 149 return ret; 150 } 151 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
