Change infinite loop mechanism to timer based polling for QBMAN release in
ldpaa_eth_rx.
Signed-off-by: Prabhakar Kushwaha <prabha...@freescale.com>
---
Changes for v2: Sending as it is for patchset
Changes for v3: Squashed with other patch
Changes for v4: reverted the squash and only have rx path
drivers/net/ldpaa_eth/ldpaa_eth.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.c
b/drivers/net/ldpaa_eth/ldpaa_eth.c
index 6de5f30..50ca6e4 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;
}
--
1.9.1
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