ucc_geth: Fix endless loop in stop_{tx,rx} routines

[linux-2.6-omap-h63xx.git] / drivers / net / ucc_geth.c

diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 0a5b817fd7ac9e66ac7a5c7ab379a973fdd3888b..fa25dc1fcdf1bab31b1c89cae9bede38efe53a9d 100644 (file)
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -1647,6 +1647,7 @@ static int ugeth_graceful_stop_tx(struct ucc_geth_private *ugeth)
        struct ucc_fast_private *uccf;
        u32 cecr_subblock;
        u32 temp;
+       int i = 10;
 
        uccf = ugeth->uccf;
 
@@ -1664,8 +1665,9 @@ static int ugeth_graceful_stop_tx(struct ucc_geth_private *ugeth)
 
        /* Wait for command to complete */
        do {
+               msleep(10);
                temp = in_be32(uccf->p_ucce);
-       } while (!(temp & UCCE_GRA));
+       } while (!(temp & UCCE_GRA) && --i);
 
        uccf->stopped_tx = 1;
 
@@ -1677,6 +1679,7 @@ static int ugeth_graceful_stop_rx(struct ucc_geth_private * ugeth)
        struct ucc_fast_private *uccf;
        u32 cecr_subblock;
        u8 temp;
+       int i = 10;
 
        uccf = ugeth->uccf;
 
@@ -1694,9 +1697,9 @@ static int ugeth_graceful_stop_rx(struct ucc_geth_private * ugeth)
                                                ucc_num);
                qe_issue_cmd(QE_GRACEFUL_STOP_RX, cecr_subblock,
                             QE_CR_PROTOCOL_ETHERNET, 0);
-
+               msleep(10);
                temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
-       } while (!(temp & GRACEFUL_STOP_ACKNOWLEDGE_RX));
+       } while (!(temp & GRACEFUL_STOP_ACKNOWLEDGE_RX) && --i);
 
        uccf->stopped_rx = 1;