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fsl-layerscape: fix warning if no hwconfig is defined

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While getting the 'subarg' of 'hwconfig' env variable in
config_core_prefetch(), if no hwconfig variable is defined,
below warning is received:
WARNING: Calling __hwconfig without a buffer and
	before environment is ready

Fix this by checking 'hwconfig' env variable.
If not found return without further processing.

Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Tested-by: Michael Walle <michael@walle.cc>
This commit is contained in:
Pankaj Bansal 2019-10-31 05:41:09 +00:00 committed by Priyanka Jain
parent 29a6617ada
commit 812ff53c3e
1 changed files with 3 additions and 1 deletions
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4
arch/arm/cpu/armv8/fsl-layerscape/cpu.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2017 NXP
* Copyright 2017-2019 NXP
* Copyright 2014-2015 Freescale Semiconductor, Inc.
*/
@ -1072,6 +1072,8 @@ static void config_core_prefetch(void)
if (env_get_f("hwconfig", buffer, sizeof(buffer)) > 0)
buf = buffer;
else
return;
prefetch_arg = hwconfig_subarg_f("core_prefetch", "disable",
&arglen, buf);