tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: c098fa18c07cc52100a52db8fd0c2900461888c9 commit: 8248d42b7c5f4338a54f26d8efebec8614b43466 [3544/3544] fbdev: add ls2k500sfb driver for ls2k500 bmc. config: x86_64-randconfig-r121-20251215 (https://download.01.org/0day-ci/archive/20251223/202512230505.cMBSrJNZ-lkp@i...) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251223/202512230505.cMBSrJNZ-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512230505.cMBSrJNZ-lkp@intel.com/ sparse warnings: (new ones prefixed by >>)

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drivers/video/fbdev/ls2k500sfb.c:143:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *static p @@ got void [noderef] __iomem * @@ drivers/video/fbdev/ls2k500sfb.c:143:27: sparse: expected void *static p drivers/video/fbdev/ls2k500sfb.c:143:27: sparse: got void [noderef] __iomem * drivers/video/fbdev/ls2k500sfb.c:145:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void *static p @@ drivers/video/fbdev/ls2k500sfb.c:145:30: sparse: expected void const volatile [noderef] __iomem *addr drivers/video/fbdev/ls2k500sfb.c:145:30: sparse: got void *static p drivers/video/fbdev/ls2k500sfb.c:199:36: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *static p @@ drivers/video/fbdev/ls2k500sfb.c:199:36: sparse: expected void volatile [noderef] __iomem *addr drivers/video/fbdev/ls2k500sfb.c:199:36: sparse: got void *static p drivers/video/fbdev/ls2k500sfb.c:201:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/video/fbdev/ls2k500sfb.c:201:37: sparse: expected void const volatile [noderef] __iomem *addr drivers/video/fbdev/ls2k500sfb.c:201:37: sparse: got void * drivers/video/fbdev/ls2k500sfb.c:254:13: sparse: sparse: symbol 'ls2k500sfb_interrupt' was not declared. Should it be static? drivers/video/fbdev/ls2k500sfb.c:456:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char *preg @@ drivers/video/fbdev/ls2k500sfb.c:456:28: sparse: expected void const volatile [noderef] __iomem *addr drivers/video/fbdev/ls2k500sfb.c:456:28: sparse: got char *preg drivers/video/fbdev/ls2k500sfb.c:457:32: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char *preg @@ drivers/video/fbdev/ls2k500sfb.c:457:32: sparse: expected void volatile [noderef] __iomem *addr drivers/video/fbdev/ls2k500sfb.c:457:32: sparse: got char *preg drivers/video/fbdev/ls2k500sfb.c:569:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char *penv @@ got void [noderef] __iomem * @@ drivers/video/fbdev/ls2k500sfb.c:569:19: sparse: expected char *penv drivers/video/fbdev/ls2k500sfb.c:569:19: sparse: got void [noderef] __iomem * drivers/video/fbdev/ls2k500sfb.c:570:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char *preg @@ got void [noderef] __iomem * @@ drivers/video/fbdev/ls2k500sfb.c:570:19: sparse: expected char *preg drivers/video/fbdev/ls2k500sfb.c:570:19: sparse: got void [noderef] __iomem * drivers/video/fbdev/ls2k500sfb.c:671:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char *penv @@ got void [noderef] __iomem * @@ drivers/video/fbdev/ls2k500sfb.c:671:14: sparse: expected char *penv drivers/video/fbdev/ls2k500sfb.c:671:14: sparse: got void [noderef] __iomem *

vim +143 drivers/video/fbdev/ls2k500sfb.c 113 114 static void ls2k500sfb_events_fn(struct work_struct *work) 115 { 116 struct ls2k500sfb_struct *priv = container_of(work, struct ls2k500sfb_struct, work); 117 struct pci_dev *pdev = priv->dev; 118 struct pci_dev *ppdev = pdev->bus->self; 119 uint32_t i, d, timeout, retry = 0; 120 static const uint32_t index[] = { 121 0x10, 0x14, 0x18, 0x1c, 0x20, 0x24, 0x30, 0x3c, 0x54, 0x58, 0x78, 0x7c, 0x80, 4 122 }; 123 124 static uint32_t data[sizeof(index) / 4]; 125 static const uint32_t cindex[] = { 0x10, 0x3c, 4 }; 126 127 static uint32_t cdata[sizeof(cindex) / 4]; 128 static uint32_t d80c, d71c, ctrl; 129 static void *p; 130 131 if (!priv->running) { 132 for (i = 0; i < ARRAY_SIZE(index); i++) 133 pci_read_config_dword(ppdev, index[i], &data[i]); 134 for (i = 0; i < ARRAY_SIZE(cindex); i++) 135 pci_read_config_dword(pdev, cindex[i], &cdata[i]); 136 if (ppdev->vendor == 0x14) { 137 pci_read_config_dword(ppdev, 0x80c, &d80c); 138 d80c = (d80c & ~(3 << 17)) | (1 << 17); 139 140 pci_read_config_dword(ppdev, 0x71c, &d71c); 141 d71c |= 1 << 26; 142

143 p = pci_iomap(ppdev, 0, 0x100); 144 } 145 ctrl = readl(p); 146 return; 147 } 148 local_bh_disable(); 149 pciebreak_smp_send_stop(100); 150 wmb(); /* flush all write before we disable pcie window */ 151 pci_write_config_dword(ppdev, 0x18, 0); 152 pci_write_config_dword(ppdev, 0x1c, 0); 153 pci_write_config_dword(ppdev, 0x20, 0); 154 atomic_set(&waiting_for_pciebreak_ipi, 0); 155 wmb(); /* flush all write after change pcie window */ 156 local_bh_enable(); 157 if (ppdev->vendor == 0x14) { 158 timeout = 10000; 159 while (timeout) { 160 pci_read_config_dword(ppdev, 0x10, &d); 161 d &= ~0xf; 162 if (!d) 163 break; 164 mdelay(1); 165 timeout--; 166 }; 167 if (!timeout) 168 pr_info("bar not clear 0\n"); 169 170 pci_read_config_dword(ppdev, 0x0, &d); 171 pr_info("pcie port deviceid=0x%x recover begin\n", d); 172 retrain: 173 while (1) { 174 pci_write_config_dword(ppdev, index[0], data[0]); 175 pci_read_config_dword(ppdev, index[0], &d); 176 d &= ~0xf; 177 if (d) 178 break; 179 mdelay(1); 180 } 181 182 while (1) { 183 for (i = 0; i < ARRAY_SIZE(index); i++) { 184 if (index[i] != 0x18 && index[i] != 0x1c && index[i] != 0x20) 185 pci_write_config_dword(ppdev, index[i], data[i]); 186 } 187 pci_write_config_dword(ppdev, 0x80c, d80c); 188 pci_write_config_dword(ppdev, 0x71c, d71c); 189 190 pci_read_config_dword(ppdev, 0x10, &d); 191 d &= ~0xf; 192 if (d) 193 break; 194 mdelay(1); 195 } 196 197 timeout = 10000; 198 199 writel(ctrl | 0x8, p); 200 while (1) { 201 d = readl(p + 0xc); 202 if ((d & 0x11) == 0x11) { 203 break; 204 } else if (!timeout) { 205 pr_info("pcie train failed status=0x%x\n", d); 206 goto out; 207 } 208 mdelay(1); 209 timeout--; 210 } 211 212 213 pr_info("pcie recovered done\n"); 214 215 if (!retry) { 216 /*wait u-boot ddr config */ 217 set_current_state(TASK_UNINTERRUPTIBLE); 218 schedule_timeout(HZ*resetbootwait); 219 set_current_state(TASK_RUNNING); 220 pci_read_config_dword(ppdev, 0x10, &d); 221 d &= ~0xf; 222 if (!d) { 223 retry = 1; 224 goto retrain; 225 } 226 } 227 } else { 228 set_current_state(TASK_UNINTERRUPTIBLE); 229 schedule_timeout(HZ*resetbootwait); 230 set_current_state(TASK_RUNNING); 231 } 232 local_bh_disable(); 233 pciebreak_smp_send_stop(10000); 234 wmb(); /* flush all write before we update pcie window */ 235 for (i = 0; i < ARRAY_SIZE(index); i++) 236 pci_write_config_dword(ppdev, index[i], data[i]); 237 238 for (i = 0; i < ARRAY_SIZE(cindex); i++) 239 pci_write_config_dword(pdev, cindex[i], cdata[i]); 240 atomic_set(&waiting_for_pciebreak_ipi, 0); 241 wmb(); /* flush all write after we update pcie window */ 242 local_bh_enable(); 243 244 245 pr_info("redraw console\n"); 246 247 saved_console = fg_console; 248 switch_console(fg_console > 0?fg_console - 1 : fg_console + 1); 249 queue_delayed_work(priv->wq, &priv->redraw_work, HZ); 250 out: 251 priv->running = 0; 252 } 253 254 irqreturn_t ls2k500sfb_interrupt(int irq, void *arg) 255 { 256 struct ls2k500sfb_struct *priv = arg; 257 struct pci_dev *pdev = priv->dev; 258 259 if (irq == pdev->irq) 260 pr_info("ls2k500sfb pcie interrupt\n"); 261 else 262 pr_info("ls2k500sfb gpio interrupt\n"); 263 if (system_state != SYSTEM_RUNNING) 264 return IRQ_HANDLED; 265 266 if (!priv->running) { 267 if (!resetdelay || time_after(jiffies, priv->reset_time + resetdelay * HZ)) { 268 priv->running = 1; 269 queue_work(priv->wq, &priv->work); 270 } 271 priv->reset_time = jiffies; 272 } 273 return IRQ_HANDLED; 274 } 275

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