add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/pci/proc.c
..
..
@@ -13,6 +13,7 @@
13
13
 #include <linux/seq_file.h>
14
14
 #include <linux/capability.h>
15
15
 #include <linux/uaccess.h>
16
+#include <linux/security.h>
16
17
 #include <asm/byteorder.h>
17
18
 #include "pci.h"
18
19
 
..
..
@@ -52,7 +53,7 @@
52
53
 		nbytes = size - pos;
53
54
 	cnt = nbytes;
54
55
 
55
-	if (!access_ok(VERIFY_WRITE, buf, cnt))
56
+	if (!access_ok(buf, cnt))
56
57
 		return -EINVAL;
57
58
 
58
59
 	pci_config_pm_runtime_get(dev);
..
..
@@ -115,7 +116,11 @@
115
116
 	struct pci_dev *dev = PDE_DATA(ino);
116
117
 	int pos = *ppos;
117
118
 	int size = dev->cfg_size;
118
-	int cnt;
119
+	int cnt, ret;
120
+
121
+	ret = security_locked_down(LOCKDOWN_PCI_ACCESS);
122
+	if (ret)
123
+		return ret;
119
124
 
120
125
 	if (pos >= size)
121
126
 		return 0;
..
..
@@ -125,7 +130,7 @@
125
130
 		nbytes = size - pos;
126
131
 	cnt = nbytes;
127
132
 
128
-	if (!access_ok(VERIFY_READ, buf, cnt))
133
+	if (!access_ok(buf, cnt))
129
134
 		return -EINVAL;
130
135
 
131
136
 	pci_config_pm_runtime_get(dev);
..
..
@@ -196,6 +201,10 @@
196
201
 #endif /* HAVE_PCI_MMAP */
197
202
 	int ret = 0;
198
203
 
204
+	ret = security_locked_down(LOCKDOWN_PCI_ACCESS);
205
+	if (ret)
206
+		return ret;
207
+
199
208
 	switch (cmd) {
200
209
 	case PCIIOC_CONTROLLER:
201
210
 		ret = pci_domain_nr(dev->bus);
..
..
@@ -222,6 +231,7 @@
222
231
 		}
223
232
 		/* If arch decided it can't, fall through... */
224
233
 #endif /* HAVE_PCI_MMAP */
234
+		fallthrough;
225
235
 	default:
226
236
 		ret = -EINVAL;
227
237
 		break;
..
..
@@ -237,7 +247,8 @@
237
247
 	struct pci_filp_private *fpriv = file->private_data;
238
248
 	int i, ret, write_combine = 0, res_bit = IORESOURCE_MEM;
239
249
 
240
-	if (!capable(CAP_SYS_RAWIO))
250
+	if (!capable(CAP_SYS_RAWIO) ||
251
+	    security_locked_down(LOCKDOWN_PCI_ACCESS))
241
252
 		return -EPERM;
242
253
 
243
254
 	if (fpriv->mmap_state == pci_mmap_io) {
..
..
@@ -247,13 +258,13 @@
247
258
 	}
248
259
 
249
260
 	/* Make sure the caller is mapping a real resource for this device */
250
-	for (i = 0; i < PCI_ROM_RESOURCE; i++) {
261
+	for (i = 0; i < PCI_STD_NUM_BARS; i++) {
251
262
 		if (dev->resource[i].flags & res_bit &&
252
263
 		    pci_mmap_fits(dev, i, vma,  PCI_MMAP_PROCFS))
253
264
 			break;
254
265
 	}
255
266
 
256
-	if (i >= PCI_ROM_RESOURCE)
267
+	if (i >= PCI_STD_NUM_BARS)
257
268
 		return -ENODEV;
258
269
 
259
270
 	if (fpriv->mmap_state == pci_mmap_mem &&
..
..
@@ -295,19 +306,20 @@
295
306
 }
296
307
 #endif /* HAVE_PCI_MMAP */
297
308
 
298
-static const struct file_operations proc_bus_pci_operations = {
299
-	.owner		= THIS_MODULE,
300
-	.llseek		= proc_bus_pci_lseek,
301
-	.read		= proc_bus_pci_read,
302
-	.write		= proc_bus_pci_write,
303
-	.unlocked_ioctl	= proc_bus_pci_ioctl,
304
-	.compat_ioctl	= proc_bus_pci_ioctl,
309
+static const struct proc_ops proc_bus_pci_ops = {
310
+	.proc_lseek	= proc_bus_pci_lseek,
311
+	.proc_read	= proc_bus_pci_read,
312
+	.proc_write	= proc_bus_pci_write,
313
+	.proc_ioctl	= proc_bus_pci_ioctl,
314
+#ifdef CONFIG_COMPAT
315
+	.proc_compat_ioctl = proc_bus_pci_ioctl,
316
+#endif
305
317
 #ifdef HAVE_PCI_MMAP
306
-	.open		= proc_bus_pci_open,
307
-	.release	= proc_bus_pci_release,
308
-	.mmap		= proc_bus_pci_mmap,
318
+	.proc_open	= proc_bus_pci_open,
319
+	.proc_release	= proc_bus_pci_release,
320
+	.proc_mmap	= proc_bus_pci_mmap,
309
321
 #ifdef HAVE_ARCH_PCI_GET_UNMAPPED_AREA
310
-	.get_unmapped_area = get_pci_unmapped_area,
322
+	.proc_get_unmapped_area = get_pci_unmapped_area,
311
323
 #endif /* HAVE_ARCH_PCI_GET_UNMAPPED_AREA */
312
324
 #endif /* HAVE_PCI_MMAP */
313
325
 };
..
..
@@ -376,7 +388,7 @@
376
388
 	}
377
389
 	seq_putc(m, '\t');
378
390
 	if (drv)
379
-		seq_printf(m, "%s", drv->name);
391
+		seq_puts(m, drv->name);
380
392
 	seq_putc(m, '\n');
381
393
 	return 0;
382
394
 }
..
..
@@ -413,7 +425,7 @@
413
425
 
414
426
 	sprintf(name, "%02x.%x", PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
415
427
 	e = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR, bus->procdir,
416
-			     &proc_bus_pci_operations, dev);
428
+			     &proc_bus_pci_ops, dev);
417
429
 	if (!e)
418
430
 		return -ENOMEM;
419
431
 	proc_set_size(e, dev->cfg_size);