[PATCH] can: flexcan: simplify the calculation of priv->mb_count

[baozhu.liu]

Since mb is a fixed-size two-dimensional array (u8 mb[2][512]),
"priv->mb_count = sizeof(priv->regs->mb)/priv->mb_size;",
this expression calculates mb_count correctly and is more concise.

Signed-off-by: baozhu.liu <lucas.liu@xxxxxxxxxxxx>
---
 drivers/net/can/flexcan/flexcan-core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/can/flexcan/flexcan-core.c b/drivers/net/can/flexcan/flexcan-core.c
index 6d638c939..e3a8bad21 100644
--- a/drivers/net/can/flexcan/flexcan-core.c
+++ b/drivers/net/can/flexcan/flexcan-core.c
@@ -1371,8 +1371,7 @@ static int flexcan_rx_offload_setup(struct net_device *dev)
 	if (priv->devtype_data.quirks & FLEXCAN_QUIRK_NR_MB_16)
 		priv->mb_count = 16;
 	else
-		priv->mb_count = (sizeof(priv->regs->mb[0]) / priv->mb_size) +
-				 (sizeof(priv->regs->mb[1]) / priv->mb_size);
+		priv->mb_count = sizeof(priv->regs->mb) / priv->mb_size;
 
 	if (priv->devtype_data.quirks & FLEXCAN_QUIRK_USE_RX_MAILBOX)
 		priv->tx_mb_reserved =
-- 
2.17.1