This is a note to let you know that I've just added the patch titled
net: ena: disable admin msix while working in polling mode
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ena-disable-admin-msix-while-working-in-polling-mode.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Netanel Belgazal <netanel@xxxxxxxxxx>
Date: Sun, 11 Jun 2017 15:42:49 +0300
Subject: net: ena: disable admin msix while working in polling mode
From: Netanel Belgazal <netanel@xxxxxxxxxx>
[ Upstream commit a2cc5198dac102775b21787752a2e0afe44ad311 ]
Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/amazon/ena/ena_com.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/net/ethernet/amazon/ena/ena_com.c
+++ b/drivers/net/ethernet/amazon/ena/ena_com.c
@@ -61,6 +61,8 @@
#define ENA_MMIO_READ_TIMEOUT 0xFFFFFFFF
+#define ENA_REGS_ADMIN_INTR_MASK 1
+
/*****************************************************************************/
/*****************************************************************************/
/*****************************************************************************/
@@ -1448,6 +1450,12 @@ void ena_com_admin_destroy(struct ena_co
void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling)
{
+ u32 mask_value = 0;
+
+ if (polling)
+ mask_value = ENA_REGS_ADMIN_INTR_MASK;
+
+ writel(mask_value, ena_dev->reg_bar + ENA_REGS_INTR_MASK_OFF);
ena_dev->admin_queue.polling = polling;
}
Patches currently in stable-queue which might be from netanel@xxxxxxxxxx are
queue-4.9/net-ena-disable-admin-msix-while-working-in-polling-mode.patch
queue-4.9/net-ena-fix-race-condition-between-submit-and-completion-admin-command.patch
queue-4.9/net-ena-fix-rare-uncompleted-admin-command-false-alarm.patch
queue-4.9/net-ena-add-missing-unmap-bars-on-device-removal.patch
queue-4.9/net-ena-add-missing-return-when-ena_com_get_io_handlers-fails.patch