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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/drivers/net/wireless/broadcom/b43legacy/phy.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23 
34   Broadcom B43legacy wireless driver
....@@ -12,20 +13,6 @@
1213   Some parts of the code in this file are derived from the ipw2200
1314   driver  Copyright(c) 2003 - 2004 Intel Corporation.
1415 
15
-  This program is free software; you can redistribute it and/or modify
16
-  it under the terms of the GNU General Public License as published by
17
-  the Free Software Foundation; either version 2 of the License, or
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-  (at your option) any later version.
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-
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-  This program is distributed in the hope that it will be useful,
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-  but WITHOUT ANY WARRANTY; without even the implied warranty of
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-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-  GNU General Public License for more details.
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-
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-  You should have received a copy of the GNU General Public License
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-  along with this program; see the file COPYING.  If not, write to
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-  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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-  Boston, MA 02110-1301, USA.
2916 
3017 */
3118 
....@@ -82,17 +69,6 @@
8269 
8370 static void b43legacy_phy_initg(struct b43legacy_wldev *dev);
8471 
85
-
86
-static inline
87
-void b43legacy_voluntary_preempt(void)
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-{
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-	B43legacy_BUG_ON(!(!in_atomic() && !in_irq() &&
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-			  !in_interrupt() && !irqs_disabled()));
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-#ifndef CONFIG_PREEMPT
92
-	cond_resched();
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-#endif /* CONFIG_PREEMPT */
94
-}
95
-
9672 /* Lock the PHY registers against concurrent access from the microcode.
9773  * This lock is nonrecursive. */
9874 void b43legacy_phy_lock(struct b43legacy_wldev *dev)
....@@ -134,7 +110,6 @@
134110 void b43legacy_phy_write(struct b43legacy_wldev *dev, u16 offset, u16 val)
135111 {
136112 	b43legacy_write16(dev, B43legacy_MMIO_PHY_CONTROL, offset);
137
-	mmiowb();
138113 	b43legacy_write16(dev, B43legacy_MMIO_PHY_DATA, val);
139114 }
140115 
....@@ -154,7 +129,7 @@
154129 }
155130 
156131 /* initialize B PHY power control
157
- * as described in http://bcm-specs.sipsolutions.net/InitPowerControl
132
+ * as described in https://bcm-specs.sipsolutions.net/InitPowerControl
158133  */
159134 static void b43legacy_phy_init_pctl(struct b43legacy_wldev *dev)
160135 {
....@@ -1138,7 +1113,7 @@
11381113 		ret += b43legacy_phy_read(dev, 0x002C);
11391114 	}
11401115 	local_irq_restore(flags);
1141
-	b43legacy_voluntary_preempt();
1116
+	cond_resched();
11421117 
11431118 	return ret;
11441119 }
....@@ -1148,7 +1123,7 @@
11481123 	struct b43legacy_phy *phy = &dev->phy;
11491124 	u16 regstack[12] = { 0 };
11501125 	u16 mls;
1151
-	u16 fval;
1126
+	s16 fval;
11521127 	int i;
11531128 	int j;
11541129 
....@@ -1267,7 +1242,7 @@
12671242 	}
12681243 	ret = b43legacy_phy_read(dev, 0x002D);
12691244 	local_irq_restore(flags);
1270
-	b43legacy_voluntary_preempt();
1245
+	cond_resched();
12711246 
12721247 	return ret;
12731248 }
....@@ -1486,7 +1461,7 @@
14861461 	b43legacy_phy_write(dev, 0x0060, value);
14871462 }
14881463 
1489
-/* http://bcm-specs.sipsolutions.net/LocalOscillator/Measure */
1464
+/* https://bcm-specs.sipsolutions.net/LocalOscillator/Measure */
14901465 void b43legacy_phy_lo_g_measure(struct b43legacy_wldev *dev)
14911466 {
14921467 	static const u8 pairorder[10] = { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8 };
....@@ -1605,7 +1580,7 @@
16051580 			b43legacy_radio_write16(dev, 0x43, i);
16061581 			b43legacy_radio_write16(dev, 0x52, phy->txctl2);
16071582 			udelay(10);
1608
-			b43legacy_voluntary_preempt();
1583
+			cond_resched();
16091584 
16101585 			b43legacy_phy_set_baseband_attenuation(dev, j * 2);
16111586 
....@@ -1656,7 +1631,7 @@
16561631 					      phy->txctl2
16571632 					      | (3/*txctl1*/ << 4));
16581633 			udelay(10);
1659
-			b43legacy_voluntary_preempt();
1634
+			cond_resched();
16601635 
16611636 			b43legacy_phy_set_baseband_attenuation(dev, j * 2);
16621637 
....@@ -1679,7 +1654,7 @@
16791654 		b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA2);
16801655 		udelay(2);
16811656 		b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA3);
1682
-		b43legacy_voluntary_preempt();
1657
+		cond_resched();
16831658 	} else
16841659 		b43legacy_phy_write(dev, 0x0015, r27 | 0xEFA0);
16851660 	b43legacy_phy_lo_adjust(dev, is_initializing);
....@@ -1746,7 +1721,7 @@
17461721 	}
17471722 }
17481723 
1749
-/* http://bcm-specs.sipsolutions.net/EstimatePowerOut
1724
+/* https://bcm-specs.sipsolutions.net/EstimatePowerOut
17501725  * This function converts a TSSI value to dBm in Q5.2
17511726  */
17521727 static s8 b43legacy_phy_estimate_power_out(struct b43legacy_wldev *dev, s8 tssi)
....@@ -1772,7 +1747,7 @@
17721747 	return dbm;
17731748 }
17741749 
1775
-/* http://bcm-specs.sipsolutions.net/RecalculateTransmissionPower */
1750
+/* https://bcm-specs.sipsolutions.net/RecalculateTransmissionPower */
17761751 void b43legacy_phy_xmitpower(struct b43legacy_wldev *dev)
17771752 {
17781753 	struct b43legacy_phy *phy = &dev->phy;