diff options
| author | Ioana Ciornei <ioana.ciornei@nxp.com> | 2020-05-05 23:14:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-07 17:35:24 -0700 |
| commit | 7596ac9d19a9df25707ecaac0675881f62dd8c18 (patch) | |
| tree | 6012bdd1f9bd14c111682a595945a2c550910bb3 /drivers/soc/fsl | |
| parent | eb55d7b65f1735dfb39fb14e47007d3c8fb74c43 (diff) | |
| download | linux-7596ac9d19a9df25707ecaac0675881f62dd8c18.tar.bz2 | |
soc: fsl: dpio: properly compute the consumer index
Mask the consumer index before using it. Without this, we would be
writing frame descriptors beyond the ring size supported by the QBMAN
block.
Fixes: 3b2abda7d28c ("soc: fsl: dpio: Replace QMAN array mode with ring mode enqueue")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/soc/fsl')
| -rw-r--r-- | drivers/soc/fsl/dpio/qbman-portal.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/soc/fsl/dpio/qbman-portal.c b/drivers/soc/fsl/dpio/qbman-portal.c index 804b8ba9bf5c..23a1377971f4 100644 --- a/drivers/soc/fsl/dpio/qbman-portal.c +++ b/drivers/soc/fsl/dpio/qbman-portal.c @@ -669,6 +669,7 @@ int qbman_swp_enqueue_multiple_direct(struct qbman_swp *s, eqcr_ci = s->eqcr.ci; p = s->addr_cena + QBMAN_CENA_SWP_EQCR_CI; s->eqcr.ci = qbman_read_register(s, QBMAN_CINH_SWP_EQCR_CI); + s->eqcr.ci &= full_mask; s->eqcr.available = qm_cyc_diff(s->eqcr.pi_ring_size, eqcr_ci, s->eqcr.ci); |