e1000e: Fix queue interrupt re-raising in Other interrupt

commit 361a954e6a7215de11a6179ad9bdc07d7e394b04 upstream.

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>
Cc: Yanhui He <yanhuih@vmware.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index e892c6dee43fb075bc1a0c9040c45f6800590db9..92a7c49c7aa77a7b17b7e1f08615a003c8eed128 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -1916,6 +1916,9 @@ static irqreturn_t e1000_msix_other(int __always_unused irq, void *data)
        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;