[PATCH net-next 10/14] net: stmmac: make chain_mode a boolean

["Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>]

priv->chain_mode is only tested for non-zero, so it can be a boolean.
Change its type to boolean, and add a comment describing this member.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h      | 3 ++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 57ded8e5177f..e98cb9f3a44c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -307,8 +307,9 @@ struct stmmac_priv {
 	 *  when set, struct dma_extended_desc
 	 */
 	bool extend_desc;
+	/* chain_mode: requested descriptor mode */
+	bool chain_mode;
 	unsigned int mode;
-	unsigned int chain_mode;
 	struct kernel_hwtstamp_config tstamp_config;
 	struct ptp_clock *ptp_clock;
 	struct ptp_clock_info ptp_clock_ops;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 3f74766f6e21..be144b946fd5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7344,7 +7344,7 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
 	/* dwmac-sun8i only work in chain mode */
 	if (priv->plat->flags & STMMAC_FLAG_HAS_SUN8I)
 		chain_mode = 1;
-	priv->chain_mode = chain_mode;
+	priv->chain_mode = !!chain_mode;
 
 	/* Initialize HW Interface */
 	ret = stmmac_hwif_init(priv);
-- 
2.47.3