disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/arch/mips/fw/lib/cmdline.c
..
..
@@ -53,7 +53,7 @@
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 {
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 	char *result = NULL;
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-	if (_fw_envp != NULL) {
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+	if (_fw_envp != NULL && fw_envp(0) != NULL) {
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 		/*
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 		 * Return a pointer to the given environment variable.
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 		 * YAMON uses "name", "value" pairs, while U-Boot uses