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MIPS: ralink: mt7621: use bitwise NOT instead of logical 

[ Upstream commit 5d8965704fe5662e2e4a7e4424a2cbe53e182670 ]

It was the intention to reverse the bits, not make them all zero by
using logical NOT operator.

Fixes: cc19db8b312a ("MIPS: ralink: mt7621: do memory detection on KSEG1")
Suggested-by: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ilya Lipnitskiy 2022-02-28 17:15:07 -08:00 committed by Greg Kroah-Hartman
parent 68c4fe2ef0
commit a304966606
1 changed files with 1 additions and 1 deletions
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2
arch/mips/ralink/mt7621.c
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@ -38,7 +38,7 @@ static bool __init mt7621_addr_wraparound_test(phys_addr_t size)
__raw_writel(MT7621_MEM_TEST_PATTERN, dm);
if (__raw_readl(dm) != __raw_readl(dm + size))
return false;
__raw_writel(!MT7621_MEM_TEST_PATTERN, dm);
__raw_writel(~MT7621_MEM_TEST_PATTERN, dm);
return __raw_readl(dm) == __raw_readl(dm + size);
}