add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/arch/mips/kernel/signal.c
..
..
@@ -52,7 +52,7 @@
52
52
 	/* Matches struct ucontext from its uc_mcontext field onwards */
53
53
 	struct sigcontext sf_sc;
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54
 	sigset_t sf_mask;
55
-	unsigned long long sf_extcontext[0];
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+	unsigned long long sf_extcontext[];
56
56
 };
57
57
 
58
58
 struct rt_sigframe {
..
..
@@ -61,6 +61,8 @@
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 	struct siginfo rs_info;
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 	struct ucontext rs_uc;
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63
 };
64
+
65
+#ifdef CONFIG_MIPS_FP_SUPPORT
64
66
 
65
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 /*
66
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  * Thread saved context copy to/from a signal context presumed to be on the
..
..
@@ -104,6 +106,20 @@
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 	return err;
105
107
 }
106
108
 
109
+#else /* !CONFIG_MIPS_FP_SUPPORT */
110
+
111
+static int copy_fp_to_sigcontext(void __user *sc)
112
+{
113
+	return 0;
114
+}
115
+
116
+static int copy_fp_from_sigcontext(void __user *sc)
117
+{
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+	return 0;
119
+}
120
+
121
+#endif /* !CONFIG_MIPS_FP_SUPPORT */
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+
107
123
 /*
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  * Wrappers for the assembly _{save,restore}_fp_context functions.
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  */
..
..
@@ -141,6 +157,8 @@
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 	uc = container_of(sc, struct ucontext, uc_mcontext);
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 	return &uc->uc_extcontext;
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159
 }
160
+
161
+#ifdef CONFIG_CPU_HAS_MSA
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162
 
145
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 static int save_msa_extcontext(void __user *buf)
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164
 {
..
..
@@ -195,9 +213,6 @@
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 	unsigned int csr;
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214
 	int i, err;
197
215
 
198
-	if (!IS_ENABLED(CONFIG_CPU_HAS_MSA))
199
-		return SIGSYS;
200
-
201
216
 	if (size != sizeof(*msa))
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217
 		return -EINVAL;
203
218
 
..
..
@@ -233,6 +248,20 @@
233
248
 
234
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 	return err;
235
250
 }
251
+
252
+#else /* !CONFIG_CPU_HAS_MSA */
253
+
254
+static int save_msa_extcontext(void __user *buf)
255
+{
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+	return 0;
257
+}
258
+
259
+static int restore_msa_extcontext(void __user *buf, unsigned int size)
260
+{
261
+	return SIGSYS;
262
+}
263
+
264
+#endif /* !CONFIG_CPU_HAS_MSA */
236
265
 
237
266
 static int save_extcontext(void __user *buf)
238
267
 {
..
..
@@ -516,6 +545,12 @@
516
545
 	return err ?: protected_restore_fp_context(sc);
517
546
 }
518
547
 
548
+#ifdef CONFIG_WAR_ICACHE_REFILLS
549
+#define SIGMASK		~(cpu_icache_line_size()-1)
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+#else
551
+#define SIGMASK		ALMASK
552
+#endif
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+
519
554
 void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
520
555
 			  size_t frame_size)
521
556
 {
..
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@@ -536,7 +571,7 @@
536
571
 
537
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 	sp = sigsp(sp, ksig);
538
573
 
539
-	return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size()-1) : ALMASK));
574
+	return (void __user *)((sp - frame_size) & SIGMASK);
540
575
 }
541
576
 
542
577
 /*
..
..
@@ -561,7 +596,7 @@
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 	if (act) {
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597
 		old_sigset_t mask;
563
598
 
564
-		if (!access_ok(VERIFY_READ, act, sizeof(*act)))
599
+		if (!access_ok(act, sizeof(*act)))
565
600
 			return -EFAULT;
566
601
 		err |= __get_user(new_ka.sa.sa_handler, &act->sa_handler);
567
602
 		err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
..
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@@ -575,7 +610,7 @@
575
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 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
576
611
 
577
612
 	if (!ret && oact) {
578
-		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
613
+		if (!access_ok(oact, sizeof(*oact)))
579
614
 			return -EFAULT;
580
615
 		err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
581
616
 		err |= __put_user(old_ka.sa.sa_handler, &oact->sa_handler);
..
..
@@ -601,7 +636,7 @@
601
636
 
602
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 	regs = current_pt_regs();
603
638
 	frame = (struct sigframe __user *)regs->regs[29];
604
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
639
+	if (!access_ok(frame, sizeof(*frame)))
605
640
 		goto badframe;
606
641
 	if (__copy_from_user(&blocked, &frame->sf_mask, sizeof(blocked)))
607
642
 		goto badframe;
..
..
@@ -612,7 +647,7 @@
612
647
 	if (sig < 0)
613
648
 		goto badframe;
614
649
 	else if (sig)
615
-		force_sig(sig, current);
650
+		force_sig(sig);
616
651
 
617
652
 	/*
618
653
 	 * Don't let your children do this ...
..
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@@ -625,7 +660,7 @@
625
660
 	/* Unreached */
626
661
 
627
662
 badframe:
628
-	force_sig(SIGSEGV, current);
663
+	force_sig(SIGSEGV);
629
664
 }
630
665
 #endif /* CONFIG_TRAD_SIGNALS */
631
666
 
..
..
@@ -638,7 +673,7 @@
638
673
 
639
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 	regs = current_pt_regs();
640
675
 	frame = (struct rt_sigframe __user *)regs->regs[29];
641
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
676
+	if (!access_ok(frame, sizeof(*frame)))
642
677
 		goto badframe;
643
678
 	if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
644
679
 		goto badframe;
..
..
@@ -649,7 +684,7 @@
649
684
 	if (sig < 0)
650
685
 		goto badframe;
651
686
 	else if (sig)
652
-		force_sig(sig, current);
687
+		force_sig(sig);
653
688
 
654
689
 	if (restore_altstack(&frame->rs_uc.uc_stack))
655
690
 		goto badframe;
..
..
@@ -665,7 +700,7 @@
665
700
 	/* Unreached */
666
701
 
667
702
 badframe:
668
-	force_sig(SIGSEGV, current);
703
+	force_sig(SIGSEGV);
669
704
 }
670
705
 
671
706
 #ifdef CONFIG_TRAD_SIGNALS
..
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@@ -676,7 +711,7 @@
676
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 	int err = 0;
677
712
 
678
713
 	frame = get_sigframe(ksig, regs, sizeof(*frame));
679
-	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
714
+	if (!access_ok(frame, sizeof (*frame)))
680
715
 		return -EFAULT;
681
716
 
682
717
 	err |= setup_sigcontext(regs, &frame->sf_sc);
..
..
@@ -715,7 +750,7 @@
715
750
 	int err = 0;
716
751
 
717
752
 	frame = get_sigframe(ksig, regs, sizeof(*frame));
718
-	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
753
+	if (!access_ok(frame, sizeof (*frame)))
719
754
 		return -EFAULT;
720
755
 
721
756
 	/* Create siginfo.  */
..
..
@@ -795,7 +830,7 @@
795
830
 				regs->regs[2] = EINTR;
796
831
 				break;
797
832
 			}
798
-		/* fallthrough */
833
+			fallthrough;
799
834
 		case ERESTARTNOINTR:
800
835
 			regs->regs[7] = regs->regs[26];
801
836
 			regs->regs[2] = regs->regs[0];
..
..
@@ -868,11 +903,10 @@
868
903
 		uprobe_notify_resume(regs);
869
904
 
870
905
 	/* deal with pending signal delivery */
871
-	if (thread_info_flags & _TIF_SIGPENDING)
906
+	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
872
907
 		do_signal(regs);
873
908
 
874
909
 	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
875
-		clear_thread_flag(TIF_NOTIFY_RESUME);
876
910
 		tracehook_notify_resume(regs);
877
911
 		rseq_handle_notify_resume(NULL, regs);
878
912
 	}
..
..
@@ -880,7 +914,7 @@
880
914
 	user_enter();
881
915
 }
882
916
 
883
-#ifdef CONFIG_SMP
917
+#if defined(CONFIG_SMP) && defined(CONFIG_MIPS_FP_SUPPORT)
884
918
 static int smp_save_fp_context(void __user *sc)
885
919
 {
886
920
 	return raw_cpu_has_fpu
..
..
@@ -908,7 +942,7 @@
908
942
 		     (offsetof(struct rt_sigframe, rs_uc.uc_extcontext) -
909
943
 		      offsetof(struct rt_sigframe, rs_uc.uc_mcontext)));
910
944
 
911
-#ifdef CONFIG_SMP
945
+#if defined(CONFIG_SMP) && defined(CONFIG_MIPS_FP_SUPPORT)
912
946
 	/* For now just do the cpu_has_fpu check when the functions are invoked */
913
947
 	save_fp_context = smp_save_fp_context;
914
948
 	restore_fp_context = smp_restore_fp_context;