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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/power/supply/wm8350_power.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Battery driver for wm8350 PMIC
34  *
....@@ -6,10 +7,6 @@
67  * Based on OLPC Battery Driver
78  *
89  * Copyright 2006  David Woodhouse <dwmw2@infradead.org>
9
- *
10
- * This program is free software; you can redistribute it and/or modify
11
- * it under the terms of the GNU General Public License version 2 as
12
- * published by the Free Software Foundation.
1310  */
1411 
1512 #include <linux/module.h>
....@@ -230,7 +227,7 @@
230227 	case WM8350_IRQ_EXT_USB_FB:
231228 	case WM8350_IRQ_EXT_WALL_FB:
232229 		wm8350_charger_config(wm8350, policy);
233
-		/* Fall through */
230
+		fallthrough;
234231 	case WM8350_IRQ_EXT_BAT_FB:
235232 		power_supply_changed(power->battery);
236233 		power_supply_changed(power->usb);
....@@ -411,44 +408,112 @@
411408  *		Initialisation
412409  *********************************************************************/
413410 
414
-static void wm8350_init_charger(struct wm8350 *wm8350)
411
+static int wm8350_init_charger(struct wm8350 *wm8350)
415412 {
413
+	int ret;
414
+
416415 	/* register our interest in charger events */
417
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT,
416
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT,
418417 			    wm8350_charger_handler, 0, "Battery hot", wm8350);
419
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD,
418
+	if (ret)
419
+		goto err;
420
+
421
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD,
420422 			    wm8350_charger_handler, 0, "Battery cold", wm8350);
421
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL,
423
+	if (ret)
424
+		goto free_chg_bat_hot;
425
+
426
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL,
422427 			    wm8350_charger_handler, 0, "Battery fail", wm8350);
423
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_TO,
428
+	if (ret)
429
+		goto free_chg_bat_cold;
430
+
431
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_TO,
424432 			    wm8350_charger_handler, 0,
425433 			    "Charger timeout", wm8350);
426
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_END,
434
+	if (ret)
435
+		goto free_chg_bat_fail;
436
+
437
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_END,
427438 			    wm8350_charger_handler, 0,
428439 			    "Charge end", wm8350);
429
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_START,
440
+	if (ret)
441
+		goto free_chg_to;
442
+
443
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_START,
430444 			    wm8350_charger_handler, 0,
431445 			    "Charge start", wm8350);
432
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY,
446
+	if (ret)
447
+		goto free_chg_end;
448
+
449
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY,
433450 			    wm8350_charger_handler, 0,
434451 			    "Fast charge ready", wm8350);
435
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9,
452
+	if (ret)
453
+		goto free_chg_start;
454
+
455
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9,
436456 			    wm8350_charger_handler, 0,
437457 			    "Battery <3.9V", wm8350);
438
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1,
458
+	if (ret)
459
+		goto free_chg_fast_rdy;
460
+
461
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1,
439462 			    wm8350_charger_handler, 0,
440463 			    "Battery <3.1V", wm8350);
441
-	wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85,
464
+	if (ret)
465
+		goto free_chg_vbatt_lt_3p9;
466
+
467
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85,
442468 			    wm8350_charger_handler, 0,
443469 			    "Battery <2.85V", wm8350);
470
+	if (ret)
471
+		goto free_chg_vbatt_lt_3p1;
444472 
445473 	/* and supply change events */
446
-	wm8350_register_irq(wm8350, WM8350_IRQ_EXT_USB_FB,
474
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_EXT_USB_FB,
447475 			    wm8350_charger_handler, 0, "USB", wm8350);
448
-	wm8350_register_irq(wm8350, WM8350_IRQ_EXT_WALL_FB,
476
+	if (ret)
477
+		goto free_chg_vbatt_lt_2p85;
478
+
479
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_EXT_WALL_FB,
449480 			    wm8350_charger_handler, 0, "Wall", wm8350);
450
-	wm8350_register_irq(wm8350, WM8350_IRQ_EXT_BAT_FB,
481
+	if (ret)
482
+		goto free_ext_usb_fb;
483
+
484
+	ret = wm8350_register_irq(wm8350, WM8350_IRQ_EXT_BAT_FB,
451485 			    wm8350_charger_handler, 0, "Battery", wm8350);
486
+	if (ret)
487
+		goto free_ext_wall_fb;
488
+
489
+	return 0;
490
+
491
+free_ext_wall_fb:
492
+	wm8350_free_irq(wm8350, WM8350_IRQ_EXT_WALL_FB, wm8350);
493
+free_ext_usb_fb:
494
+	wm8350_free_irq(wm8350, WM8350_IRQ_EXT_USB_FB, wm8350);
495
+free_chg_vbatt_lt_2p85:
496
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85, wm8350);
497
+free_chg_vbatt_lt_3p1:
498
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1, wm8350);
499
+free_chg_vbatt_lt_3p9:
500
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9, wm8350);
501
+free_chg_fast_rdy:
502
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY, wm8350);
503
+free_chg_start:
504
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_START, wm8350);
505
+free_chg_end:
506
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_END, wm8350);
507
+free_chg_to:
508
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_TO, wm8350);
509
+free_chg_bat_fail:
510
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL, wm8350);
511
+free_chg_bat_cold:
512
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD, wm8350);
513
+free_chg_bat_hot:
514
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT, wm8350);
515
+err:
516
+	return ret;
452517 }
453518 
454519 static void free_charger_irq(struct wm8350 *wm8350)
....@@ -459,6 +524,7 @@
459524 	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_TO, wm8350);
460525 	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_END, wm8350);
461526 	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_START, wm8350);
527
+	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY, wm8350);
462528 	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9, wm8350);
463529 	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1, wm8350);
464530 	wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85, wm8350);