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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org It is valid if offset+length == sram_size. For example, sram_size=100, offset=99, length=1. Accessing offset 99 with length 1 is valid. Signed-off-by: Tzung-Bi Shih --- drivers/remoteproc/mtk_scp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index a1e23b5f19b9..0abbeb62cf43 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -408,11 +408,11 @@ static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len) if (da < scp->sram_size) { offset = da; - if (offset >= 0 && (offset + len) < scp->sram_size) + if (offset >= 0 && (offset + len) <= scp->sram_size) return (void __force *)scp->sram_base + offset; } else if (scp->dram_size) { offset = da - scp->dma_addr; - if (offset >= 0 && (offset + len) < scp->dram_size) + if (offset >= 0 && (offset + len) <= scp->dram_size) return scp->cpu_addr + offset; } -- 2.29.2.299.gdc1121823c-goog _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek