drivers/net/enc28j60.c: Fix GCC 4.6 warnings

Fix:
enc28j60.c: In function 'enc_receive':
enc28j60.c:435:5: warning: variable 'eir_reg' set but not used
[-Wunused-but-set-variable]
enc28j60.c: In function 'enc_poll':
enc28j60.c:503:5: warning: variable 'estat_reg' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Anatolij Gustschin <agust@denx.de>

diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c
index d55cacd..e2011ae 100644 (file)
--- a/drivers/net/enc28j60.c
+++ b/drivers/net/enc28j60.c
@@ -432,7 +432,6 @@ static void enc_receive(enc_dev_t *enc)
        u16 pkt_len;
        u16 copy_len;
        u16 status;
-       u8 eir_reg;
        u8 pkt_cnt = 0;
        u16 rxbuf_rdpt;
        u8 hbuf[6];
@@ -476,7 +475,7 @@ static void enc_receive(enc_dev_t *enc)
                /* read pktcnt */
                pkt_cnt = enc_r8(enc, CTL_REG_EPKTCNT);
                if (copy_len == 0) {
-                       eir_reg = enc_r8(enc, CTL_REG_EIR);
+                       (void)enc_r8(enc, CTL_REG_EIR);
                        enc_reset_rx(enc);
                        printf("%s: receive copy_len=0\n", enc->dev->name);
                        continue;
@@ -489,7 +488,7 @@ static void enc_receive(enc_dev_t *enc)
                NetReceive(packet, pkt_len);
                if (enc_claim_bus(enc))
                        return;
-               eir_reg = enc_r8(enc, CTL_REG_EIR);
+               (void)enc_r8(enc, CTL_REG_EIR);
        } while (pkt_cnt);
        /* Use EPKTCNT not EIR.PKTIF flag, see errata pt. 6 */
 }
@@ -500,14 +499,13 @@ static void enc_receive(enc_dev_t *enc)
 static void enc_poll(enc_dev_t *enc)
 {
        u8 eir_reg;
-       u8 estat_reg;
        u8 pkt_cnt;
 
 #ifdef CONFIG_USE_IRQ
        /* clear global interrupt enable bit in enc28j60 */
        enc_bclr(enc, CTL_REG_EIE, ENC_EIE_INTIE);
 #endif
-       estat_reg = enc_r8(enc, CTL_REG_ESTAT);
+       (void)enc_r8(enc, CTL_REG_ESTAT);
        eir_reg = enc_r8(enc, CTL_REG_EIR);
        if (eir_reg & ENC_EIR_TXIF) {
                /* clear TXIF bit in EIR */