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Date:   Wed, 3 Apr 2019 07:46:03 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Anup Patel <Anup.Patel@wdc.com>
Cc:     Palmer Dabbelt <palmer@sifive.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Atish Patra <Atish.Patra@wdc.com>,
        Christoph Hellwig <hch@infradead.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Mike Rapoport <rppt@linux.ibm.com>,
        "linux-riscv@lists.infradead.org" <linux-riscv@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] RISC-V: Fix Maximum Physical Memory 2GiB option for
 64bit systems
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> +			if ((reg->base + mem_size) < end)

No need for the braces.

Otherwise looks fine:

Reviewed-by: Christoph Hellwig <hch@lst.de>