add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/tty/serial/efm32-uart.c
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@@ -1,8 +1,4 @@
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 // SPDX-License-Identifier: GPL-2.0
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-#if defined(CONFIG_SERIAL_EFM32_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
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-#define SUPPORT_SYSRQ
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-#endif
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-
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 #include <linux/kernel.h>
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 #include <linux/module.h>
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 #include <linux/io.h>
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@@ -204,7 +200,7 @@
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 		/*
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 		 * This is a reserved bit and I only saw it read as 0. But to be
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 		 * sure not to be confused too much by new devices adhere to the
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-		 * warning in the reference manual that reserverd bits might
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+		 * warning in the reference manual that reserved bits might
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 		 * read as 1 in the future.
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 		 */
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 		rxdata &= ~SW_UARTn_RXDATAX_BERR;
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@@ -748,6 +744,7 @@
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 	efm_port->port.type = PORT_EFMUART;
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 	efm_port->port.iotype = UPIO_MEM32;
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 	efm_port->port.fifosize = 2;
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+	efm_port->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_EFM32_UART_CONSOLE);
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 	efm_port->port.ops = &efm32_uart_pops;
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 	efm_port->port.flags = UPF_BOOT_AUTOCONF;
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