diff options
| author | Prabhakar Kushwaha <prabhakar@freescale.com> | 2015-07-02 11:29:08 +0530 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-07-20 11:44:37 -0700 |
| commit | 56c57cf7e9bc760d6d02b50f8d0b384fbb58d0fb (patch) | |
| tree | f2cacc65f7a7f8f2c8343617cf9922554c51fe02 /drivers | |
| parent | 0c7c87a4ac3bb532f785fb6a19f68dcc2a588d1c (diff) | |
| download | talos-obmc-uboot-56c57cf7e9bc760d6d02b50f8d0b384fbb58d0fb.tar.gz talos-obmc-uboot-56c57cf7e9bc760d6d02b50f8d0b384fbb58d0fb.zip | |
driver/ldpaa_eth:Avoid infinite loop in ldpaa_eth_rx
Change infinite loop mechanism to timer based polling for QBMAN release in
ldpaa_eth_rx.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ldpaa_eth/ldpaa_eth.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.c b/drivers/net/ldpaa_eth/ldpaa_eth.c index 6de5f30f6c..50ca6e45fb 100644 --- a/drivers/net/ldpaa_eth/ldpaa_eth.c +++ b/drivers/net/ldpaa_eth/ldpaa_eth.c @@ -31,6 +31,8 @@ static void ldpaa_eth_rx(struct ldpaa_eth_priv *priv, uint32_t fd_length; struct ldpaa_fas *fas; uint32_t status, err; + u32 timeo = (CONFIG_SYS_HZ * 2) / 1000; + u32 time_start; struct qbman_release_desc releasedesc; struct qbman_swp *swp = dflt_dpio->sw_portal; @@ -65,10 +67,15 @@ error: flush_dcache_range(fd_addr, fd_addr + LDPAA_ETH_RX_BUFFER_SIZE); qbman_release_desc_clear(&releasedesc); qbman_release_desc_set_bpid(&releasedesc, dflt_dpbp->dpbp_attr.bpid); + time_start = get_timer(0); do { /* Release buffer into the QBMAN */ err = qbman_swp_release(swp, &releasedesc, &fd_addr, 1); - } while (err == -EBUSY); + } while (get_timer(time_start) < timeo && err == -EBUSY); + + if (err == -EBUSY) + printf("Rx frame: QBMAN buffer release fails\n"); + return; } |
