target/linux/layerscape/patches-5.4/701-net-0400-drivers-staging-fsl_qbman-Disable-Portal-Channel-IRQ.patch

   1 From 09269e71bfe9ff445ba42e2b88b17d323e434896 Mon Sep 17 00:00:00 2001
   2 From: Roy Pledge <roy.pledge@nxp.com>
   3 Date: Mon, 16 Dec 2019 16:59:32 -0500
   4 Subject: [PATCH] drivers/staging/fsl_qbman: Disable Portal Channel IRQs
   5
   6 Disable portal channel IRQs to avoid them stopping QBMan from
   7 entering idle mode. Since push mode is used in this driver these
   8 interrupts are not needed/used.
   9
  10 Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
  11 (cherry picked from commit 977cf95ef173bf22b1816e7dbafcbb0f8a151133)
  12 ---
  13  drivers/staging/fsl_qbman/qman_high.c | 7 ++++++-
  14  1 file changed, 6 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/staging/fsl_qbman/qman_high.c
  17 +++ b/drivers/staging/fsl_qbman/qman_high.c
  18 @@ -737,7 +737,12 @@ struct qman_portal *qman_create_portal(
  19         }
  20         /* Success */
  21         portal->config = config;
  22 -       qm_isr_disable_write(__p, 0);
  23 +       /*
  24 +        * Undisable all the IRQs except the dequeue available bits.
  25 +        * If left enabled they cause problems with sleep mode. Since
  26 +        * they are not used in push mode we can safely turn them off
  27 +        */
  28 +       qm_isr_disable_write(__p, QM_DQAVAIL_MASK);
  29         qm_isr_uninhibit(__p);
  30         /* Write a sane SDQCR */
  31         qm_dqrr_sdqcr_set(__p, portal->sdqcr);