add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/firmware/google/gsmi.c
..
..
@@ -360,9 +360,10 @@
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 		memcpy(data, gsmi_dev.data_buf->start, *data_size);
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 		/* All variables are have the following attributes */
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-		*attr = EFI_VARIABLE_NON_VOLATILE |
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-			EFI_VARIABLE_BOOTSERVICE_ACCESS |
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-			EFI_VARIABLE_RUNTIME_ACCESS;
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+		if (attr)
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+			*attr = EFI_VARIABLE_NON_VOLATILE |
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+				EFI_VARIABLE_BOOTSERVICE_ACCESS |
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+				EFI_VARIABLE_RUNTIME_ACCESS;
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 	}
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 	spin_unlock_irqrestore(&gsmi_dev.lock, flags);