Commit 56c57cf7 authored by Prabhakar Kushwaha's avatar Prabhakar Kushwaha Committed by York Sun

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: default avatarPrabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: default avatarYork Sun <yorksun@freescale.com>
parent 0c7c87a4
......@@ -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;
}
......
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