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2024-01-31 f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 
 kernel/drivers/net/wireless/broadcom/b43/main.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23 
34   Broadcom B43 wireless driver
....@@ -15,20 +16,6 @@
1516   Some parts of the code in this file are derived from the ipw2200
1617   driver  Copyright(c) 2003 - 2004 Intel Corporation.
1718 
18
-  This program is free software; you can redistribute it and/or modify
19
-  it under the terms of the GNU General Public License as published by
20
-  the Free Software Foundation; either version 2 of the License, or
21
-  (at your option) any later version.
22
-
23
-  This program is distributed in the hope that it will be useful,
24
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
25
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
26
-  GNU General Public License for more details.
27
-
28
-  You should have received a copy of the GNU General Public License
29
-  along with this program; see the file COPYING.  If not, write to
30
-  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
31
-  Boston, MA 02110-1301, USA.
3219 
3320 */
3421 
....@@ -485,7 +472,6 @@
485472 		val = swab32(val);
486473 
487474 	b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
488
-	mmiowb();
489475 	b43_write32(dev, B43_MMIO_RAM_DATA, val);
490476 }
491477 
....@@ -656,9 +642,7 @@
656642 	/* The hardware guarantees us an atomic write, if we
657643 	 * write the low register first. */
658644 	b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
659
-	mmiowb();
660645 	b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
661
-	mmiowb();
662646 }
663647 
664648 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
....@@ -750,7 +734,7 @@
750734 }
751735 
752736 /* DummyTransmission function, as documented on
753
- * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
737
+ * https://bcm-v4.sipsolutions.net/802.11/DummyTransmission
754738  */
755739 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
756740 {
....@@ -797,8 +781,9 @@
797781 	b43_write16(dev, B43_MMIO_XMTSEL, 0x0826);
798782 	b43_write16(dev, B43_MMIO_TXE0_CTL, 0x0000);
799783 
800
-	if (!pa_on && phy->type == B43_PHYTYPE_N)
784
+	if (!pa_on && phy->type == B43_PHYTYPE_N) {
801785 		; /*b43_nphy_pa_override(dev, false) */
786
+	}
802787 
803788 	switch (phy->type) {
804789 	case B43_PHYTYPE_N:
....@@ -1214,7 +1199,7 @@
12141199 	}
12151200 }
12161201 
1217
-/* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
1202
+/* https://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
12181203 void b43_wireless_core_phy_pll_reset(struct b43_wldev *dev)
12191204 {
12201205 	struct bcma_drv_cc *bcma_cc __maybe_unused;
....@@ -1822,11 +1807,9 @@
18221807 		if (b43_bus_host_is_sdio(dev->dev)) {
18231808 			/* wl->mutex is enough. */
18241809 			b43_do_beacon_update_trigger_work(dev);
1825
-			mmiowb();
18261810 		} else {
18271811 			spin_lock_irq(&wl->hardirq_lock);
18281812 			b43_do_beacon_update_trigger_work(dev);
1829
-			mmiowb();
18301813 			spin_unlock_irq(&wl->hardirq_lock);
18311814 		}
18321815 	}
....@@ -1891,7 +1874,7 @@
18911874 	switch (reason) {
18921875 	default:
18931876 		b43dbg(dev->wl, "The panic reason is unknown.\n");
1894
-		/* fallthrough */
1877
+		fallthrough;
18951878 	case B43_FWPANIC_DIE:
18961879 		/* Do not restart the controller or firmware.
18971880 		 * The device is nonfunctional from now on.
....@@ -2031,8 +2014,9 @@
20312014 		handle_irq_beacon(dev);
20322015 	if (reason & B43_IRQ_PMQ)
20332016 		handle_irq_pmq(dev);
2034
-	if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
2017
+	if (reason & B43_IRQ_TXFIFO_FLUSH_OK) {
20352018 		;/* TODO */
2019
+	}
20362020 	if (reason & B43_IRQ_NOISESAMPLE_OK)
20372021 		handle_irq_noise(dev);
20382022 
....@@ -2078,7 +2062,6 @@
20782062 
20792063 	mutex_lock(&dev->wl->mutex);
20802064 	b43_do_interrupt_thread(dev);
2081
-	mmiowb();
20822065 	mutex_unlock(&dev->wl->mutex);
20832066 
20842067 	return IRQ_HANDLED;
....@@ -2143,7 +2126,6 @@
21432126 
21442127 	spin_lock(&dev->wl->hardirq_lock);
21452128 	ret = b43_do_interrupt(dev);
2146
-	mmiowb();
21472129 	spin_unlock(&dev->wl->hardirq_lock);
21482130 
21492131 	return ret;
....@@ -2184,7 +2166,7 @@
21842166 {
21852167 	const char text[] =
21862168 		"You must go to " \
2187
-		"http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
2169
+		"https://wireless.wiki.kernel.org/en/users/Drivers/b43#devicefirmware " \
21882170 		"and download the correct firmware for this driver version. " \
21892171 		"Please carefully read all instructions on this website.\n";
21902172 
....@@ -2286,7 +2268,7 @@
22862268 		size = be32_to_cpu(hdr->size);
22872269 		if (size != ctx->blob->size - sizeof(struct b43_fw_header))
22882270 			goto err_format;
2289
-		/* fallthrough */
2271
+		fallthrough;
22902272 	case B43_FW_TYPE_IV:
22912273 		if (hdr->ver != 1)
22922274 			goto err_format;
....@@ -2310,7 +2292,7 @@
23102292 	return -EPROTO;
23112293 }
23122294 
2313
-/* http://bcm-v4.sipsolutions.net/802.11/Init/Firmware */
2295
+/* https://bcm-v4.sipsolutions.net/802.11/Init/Firmware */
23142296 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
23152297 {
23162298 	struct b43_wldev *dev = ctx->dev;
....@@ -2610,17 +2592,12 @@
26102592 
26112593 	err = ieee80211_register_hw(wl->hw);
26122594 	if (err)
2613
-		goto err_one_core_detach;
2614
-	wl->hw_registred = true;
2595
+		goto out;
2596
+	wl->hw_registered = true;
26152597 	b43_leds_register(wl->current_dev);
26162598 
26172599 	/* Register HW RNG driver */
26182600 	b43_rng_init(wl);
2619
-
2620
-	goto out;
2621
-
2622
-err_one_core_detach:
2623
-	b43_one_core_detach(dev->dev);
26242601 
26252602 out:
26262603 	kfree(ctx);
....@@ -2868,7 +2845,7 @@
28682845 }
28692846 
28702847 /* Initialize the GPIOs
2871
- * http://bcm-specs.sipsolutions.net/GPIO
2848
+ * https://bcm-specs.sipsolutions.net/GPIO
28722849  */
28732850 
28742851 #ifdef CONFIG_B43_SSB
....@@ -2996,7 +2973,7 @@
29962973 	}
29972974 }
29982975 
2999
-/* http://bcm-specs.sipsolutions.net/SuspendMAC */
2976
+/* https://bcm-specs.sipsolutions.net/SuspendMAC */
30002977 void b43_mac_suspend(struct b43_wldev *dev)
30012978 {
30022979 	int i;
....@@ -3029,7 +3006,7 @@
30293006 	dev->mac_suspended++;
30303007 }
30313008 
3032
-/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
3009
+/* https://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
30333010 void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
30343011 {
30353012 	u32 tmp;
....@@ -3203,7 +3180,7 @@
32033180 		b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
32043181 		b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
32053182 		b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
3206
-		/* fallthrough */
3183
+		fallthrough;
32073184 	case B43_PHYTYPE_B:
32083185 		b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
32093186 		b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
....@@ -3256,7 +3233,7 @@
32563233 }
32573234 
32583235 /* Initialize the chip
3259
- * http://bcm-specs.sipsolutions.net/ChipInit
3236
+ * https://bcm-specs.sipsolutions.net/ChipInit
32603237  */
32613238 static int b43_chip_init(struct b43_wldev *dev)
32623239 {
....@@ -3625,7 +3602,7 @@
36253602 			else
36263603 				err = b43_dma_tx(dev, skb);
36273604 			if (err == -ENOSPC) {
3628
-				wl->tx_queue_stopped[queue_num] = 1;
3605
+				wl->tx_queue_stopped[queue_num] = true;
36293606 				ieee80211_stop_queue(wl->hw, queue_num);
36303607 				skb_queue_head(&wl->tx_queue[queue_num], skb);
36313608 				break;
....@@ -3636,7 +3613,7 @@
36363613 		}
36373614 
36383615 		if (!err)
3639
-			wl->tx_queue_stopped[queue_num] = 0;
3616
+			wl->tx_queue_stopped[queue_num] = false;
36403617 	}
36413618 
36423619 #if B43_DEBUG
....@@ -5354,7 +5331,7 @@
53545331 		/* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */
53555332 		if (dev->phy.type != B43_PHYTYPE_G)
53565333 			break;
5357
-		/* fall through */
5334
+		fallthrough;
53585335 	case 0x4313: /* BCM4311 */
53595336 	case 0x431a: /* BCM4318 */
53605337 	case 0x432a: /* BCM4321 */
....@@ -5493,13 +5470,11 @@
54935470 static void b43_one_core_detach(struct b43_bus_dev *dev)
54945471 {
54955472 	struct b43_wldev *wldev;
5496
-	struct b43_wl *wl;
54975473 
54985474 	/* Do not cancel ieee80211-workqueue based work here.
54995475 	 * See comment in b43_remove(). */
55005476 
55015477 	wldev = b43_bus_get_wldev(dev);
5502
-	wl = wldev->wl;
55035478 	b43_debugfs_remove_device(wldev);
55045479 	b43_wireless_core_detach(wldev);
55055480 	list_del(&wldev->list);
....@@ -5610,7 +5585,7 @@
56105585 
56115586 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
56125587 
5613
-	wl->hw_registred = false;
5588
+	wl->hw_registered = false;
56145589 	hw->max_rates = 2;
56155590 	SET_IEEE80211_DEV(hw, dev->dev);
56165591 	if (is_valid_ether_addr(sprom->et1mac))
....@@ -5630,7 +5605,7 @@
56305605 	/* Initialize queues and flags. */
56315606 	for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
56325607 		skb_queue_head_init(&wl->tx_queue[queue_num]);
5633
-		wl->tx_queue_stopped[queue_num] = 0;
5608
+		wl->tx_queue_stopped[queue_num] = false;
56345609 	}
56355610 
56365611 	snprintf(chip_name, ARRAY_SIZE(chip_name),
....@@ -5693,7 +5668,7 @@
56935668 	B43_WARN_ON(!wl);
56945669 	if (!wldev->fw.ucode.data)
56955670 		return;			/* NULL if firmware never loaded */
5696
-	if (wl->current_dev == wldev && wl->hw_registred) {
5671
+	if (wl->current_dev == wldev && wl->hw_registered) {
56975672 		b43_leds_stop(wldev);
56985673 		ieee80211_unregister_hw(wl->hw);
56995674 	}
....@@ -5776,7 +5751,7 @@
57765751 	B43_WARN_ON(!wl);
57775752 	if (!wldev->fw.ucode.data)
57785753 		return;			/* NULL if firmware never loaded */
5779
-	if (wl->current_dev == wldev && wl->hw_registred) {
5754
+	if (wl->current_dev == wldev && wl->hw_registered) {
57805755 		b43_leds_stop(wldev);
57815756 		ieee80211_unregister_hw(wl->hw);
57825757 	}