linux-kernel - [PATCH 4.2 203/258] MIPS: Fix console output for Fulong2e system

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Date:	Sat, 17 Oct 2015 18:58:36 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Huacai Chen <chenhc@...ote.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Markos Chandras <markos.chandras@...tec.com>,
	linux-mips@...ux-mips.org, Ralf Baechle <ralf@...ux-mips.org>
Subject: [PATCH 4.2 203/258] MIPS: Fix console output for Fulong2e system

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@...ck-us.net>

commit fc2ca674470bbfe11d72a20a3f19fd3dc43bfca0 upstream.

Commit 3adeb2566b9b ("MIPS: Loongson: Improve LEFI firmware interface")
made the number of UARTs dynamic if LEFI_FIRMWARE_INTERFACE is configured.
Unfortunately, it did not initialize the number of UARTs if
LEFI_FIRMWARE_INTERFACE is not configured. As a result, the Fulong2e
system has no console.

Fixes: 3adeb2566b9b ("MIPS: Loongson: Improve LEFI firmware interface")
Acked-by: Huacai Chen <chenhc@...ote.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Tested-by: Markos Chandras <markos.chandras@...tec.com>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11076/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/loongson64/common/env.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/mips/loongson64/common/env.c
+++ b/arch/mips/loongson64/common/env.c
@@ -64,6 +64,9 @@ void __init prom_init_env(void)
 	}
 	if (memsize == 0)
 		memsize = 256;
+
+	loongson_sysconf.nr_uarts = 1;
+
 	pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize);
 #else
 	struct boot_params *boot_p;


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