[PATCH net-next v2 14/15] net: stmmac: qcom-ethqos: correct prg_rclk_dly comment

[Russell King (Oracle)]

The comment for calculating the prg_rclk_dly value is incorrect as it
omits the brackets around the divisor. Add the brackets to allow the
reader to correctly evaluate the value. Validated with the values given
in the driver.

Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 9dae40c27903..667676c29a95 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -450,8 +450,10 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed)
 		rgmii_setmask(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
 			      SDCC_HC_REG_DDR_CONFIG);
 	} else {
-		/* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT / 2 * RX delay ns,
-		 * in practice this becomes PRG_RCLK_DLY = 52 * 4 / 2 * RX delay ns
+		/* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT /
+		 *  (2 * RX delay ns),
+		 * in practice this becomes PRG_RCLK_DLY = 52 * 4 /
+		 *  (2 * RX delay ns)
 		 */
 		if (ethqos->has_emac_ge_3) {
 			/* 0.9 ns */
-- 
2.47.3