[PATCH 1/3] remoteproc/mediatek: fix boundary check

[Tzung-Bi Shih]

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 <tzungbi at google.com>
---
 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 577cbd5d421e..7ba00305009a 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 (void __force *)scp->cpu_addr + offset;
 	}
 
-- 
2.29.2.299.gdc1121823c-goog