diff options
Diffstat (limited to 'target/linux/generic/backport-4.14/700-3-6-e1000e-Fix-queue-interrupt-re-raising-in-Other-interrupt.diff')
| -rw-r--r-- | target/linux/generic/backport-4.14/700-3-6-e1000e-Fix-queue-interrupt-re-raising-in-Other-interrupt.diff | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.14/700-3-6-e1000e-Fix-queue-interrupt-re-raising-in-Other-interrupt.diff b/target/linux/generic/backport-4.14/700-3-6-e1000e-Fix-queue-interrupt-re-raising-in-Other-interrupt.diff new file mode 100644 index 0000000000..8ad13ba69a --- /dev/null +++ b/target/linux/generic/backport-4.14/700-3-6-e1000e-Fix-queue-interrupt-re-raising-in-Other-interrupt.diff @@ -0,0 +1,50 @@ +From patchwork Mon Mar 5 21:40:27 2018 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [net, v2, + 3/6] e1000e: Fix queue interrupt re-raising in Other interrupt +X-Patchwork-Submitter: "Kirsher, Jeffrey T" <jeffrey.t.kirsher@intel.com> +X-Patchwork-Id: 881775 +X-Patchwork-Delegate: davem@davemloft.net +Message-Id: <20180305214030.25141-4-jeffrey.t.kirsher@intel.com> +To: davem@davemloft.net +Cc: Benjamin Poirier <bpoirier@suse.com>, netdev@vger.kernel.org, + nhorman@redhat.com, sassmann@redhat.com, jogreene@redhat.com, + Jeff Kirsher <jeffrey.t.kirsher@intel.com> +Date: Mon, 5 Mar 2018 13:40:27 -0800 +From: Jeff Kirsher <jeffrey.t.kirsher@intel.com> +List-Id: <netdev.vger.kernel.org> + +From: Benjamin Poirier <bpoirier@suse.com> + +Restores the ICS write for Rx/Tx queue interrupts which was present before +commit 16ecba59bc33 ("e1000e: Do not read ICR in Other interrupt", v4.5-rc1) +but was not restored in commit 4aea7a5c5e94 +("e1000e: Avoid receiver overrun interrupt bursts", v4.15-rc1). + +This re-raises the queue interrupts in case the txq or rxq bits were set in +ICR and the Other interrupt handler read and cleared ICR before the queue +interrupt was raised. + +Fixes: 4aea7a5c5e94 ("e1000e: Avoid receiver overrun interrupt bursts") +Signed-off-by: Benjamin Poirier <bpoirier@suse.com> +Acked-by: Alexander Duyck <alexander.h.duyck@intel.com> +Tested-by: Aaron Brown <aaron.f.brown@intel.com> +Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> +--- + drivers/net/ethernet/intel/e1000e/netdev.c | 3 +++ + 1 file changed, 3 insertions(+) + +--- a/drivers/net/ethernet/intel/e1000e/netdev.c ++++ b/drivers/net/ethernet/intel/e1000e/netdev.c +@@ -1915,6 +1915,9 @@ static irqreturn_t e1000_msix_other(int + icr = er32(ICR); + ew32(ICR, E1000_ICR_OTHER); + ++ if (icr & adapter->eiac_mask) ++ ew32(ICS, (icr & adapter->eiac_mask)); ++ + if (icr & E1000_ICR_LSC) { + ew32(ICR, E1000_ICR_LSC); + hw->mac.get_link_status = true; |