[U-Boot] [PATCH 2/9] net: e1000: Fix build warnings for 32-bit

[Bin Meng <bmeng.cn@gmail.com>]

commit 6497e37 "net: e1000: Support 64-bit physical address" causes
compiler warnings on 32-bit U-Boot build below.

drivers/net/e1000.c: In function 'e1000_configure_tx':
drivers/net/e1000.c:4982:2: warning: right shift count >= width of type [enabled by default]
drivers/net/e1000.c: In function 'e1000_configure_rx':
drivers/net/e1000.c:5126:2: warning: right shift count >= width of type [enabled by default]

This commit fixes the build warnings.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
---

 drivers/net/e1000.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c
index 6f74d30..a467280 100644
--- a/drivers/net/e1000.c
+++ b/drivers/net/e1000.c
@@ -4977,9 +4977,10 @@ e1000_configure_tx(struct e1000_hw *hw)
 	unsigned long tctl;
 	unsigned long tipg, tarc;
 	uint32_t ipgr1, ipgr2;
+	uint64_t tdba = (unsigned long)tx_base;
 
-	E1000_WRITE_REG(hw, TDBAL, (unsigned long)tx_base & 0xffffffff);
-	E1000_WRITE_REG(hw, TDBAH, (unsigned long)tx_base >> 32);
+	E1000_WRITE_REG(hw, TDBAL, (uint32_t)(tdba & 0xffffffff));
+	E1000_WRITE_REG(hw, TDBAH, (uint32_t)(tdba >> 32));
 
 	E1000_WRITE_REG(hw, TDLEN, 128);
 
@@ -5103,6 +5104,8 @@ e1000_configure_rx(struct e1000_hw *hw)
 {
 	unsigned long rctl, ctrl_ext;
 	rx_tail = 0;
+	uint64_t rdba = (unsigned long)rx_base;
+
 	/* make sure receives are disabled while setting up the descriptors */
 	rctl = E1000_READ_REG(hw, RCTL);
 	E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
@@ -5122,8 +5125,8 @@ e1000_configure_rx(struct e1000_hw *hw)
 		E1000_WRITE_FLUSH(hw);
 	}
 	/* Setup the Base and Length of the Rx Descriptor Ring */
-	E1000_WRITE_REG(hw, RDBAL, (unsigned long)rx_base & 0xffffffff);
-	E1000_WRITE_REG(hw, RDBAH, (unsigned long)rx_base >> 32);
+	E1000_WRITE_REG(hw, RDBAL, (uint32_t)(rdba & 0xffffffff));
+	E1000_WRITE_REG(hw, RDBAH, (uint32_t)(rdba >> 32));
 
 	E1000_WRITE_REG(hw, RDLEN, 128);
 
-- 
1.8.2.1