add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/arch/m68k/kernel/signal.c
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@@ -882,11 +882,17 @@
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 }
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 static inline void __user *
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-get_sigframe(struct ksignal *ksig, size_t frame_size)
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+get_sigframe(struct ksignal *ksig, struct pt_regs *tregs, size_t frame_size)
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 {
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 	unsigned long usp = sigsp(rdusp(), ksig);
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+	unsigned long gap = 0;
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-	return (void __user *)((usp - frame_size) & -8UL);
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+	if (CPU_IS_020_OR_030 && tregs->format == 0xb) {
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+		/* USP is unreliable so use worst-case value */
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+		gap = 256;
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+	}
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+
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+	return (void __user *)((usp - gap - frame_size) & -8UL);
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 }
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 static int setup_frame(struct ksignal *ksig, sigset_t *set,
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@@ -904,7 +910,7 @@
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 		return -EFAULT;
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 	}
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-	frame = get_sigframe(ksig, sizeof(*frame) + fsize);
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+	frame = get_sigframe(ksig, tregs, sizeof(*frame) + fsize);
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 	if (fsize)
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 		err |= copy_to_user (frame + 1, regs + 1, fsize);
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@@ -976,7 +982,7 @@
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 		return -EFAULT;
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 	}
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-	frame = get_sigframe(ksig, sizeof(*frame));
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+	frame = get_sigframe(ksig, tregs, sizeof(*frame));
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 	if (fsize)
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 		err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);