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From 395e73945b1175ddcc414d092a049d9bf7ef5691 Mon Sep 17 00:00:00 2001
From: Igor Russkikh <irusskik@redhat.com>
Date: Fri, 6 Nov 2020 18:36:31 -0500
Subject: [PATCH 014/139] [netdrv] net: aquantia: temperature retrieval fix
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Message-id: <1604687916-15087-15-git-send-email-irusskik@redhat.com>
Patchwork-id: 338441
Patchwork-instance: patchwork
O-Subject: [RHEL8.4 BZ 1857861 014/139] net: aquantia: temperature retrieval fix
Bugzilla: 1857861
RH-Acked-by: David Arcari <darcari@redhat.com>
RH-Acked-by: John Linville <linville@redhat.com>
RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
Bugzilla: http://bugzilla.redhat.com/1857861
commit 06b0d7fe7e5ff3ba4c7e265ef41135e8bcc232bb
Author: Igor Russkikh <Igor.Russkikh@aquantia.com>
Date: Fri Oct 11 13:45:19 2019 +0000
net: aquantia: temperature retrieval fix
Chip temperature is a two byte word, colocated internally with cable
length data. We do all readouts from HW memory by dwords, thus
we should clear extra high bytes, otherwise temperature output
gets weird as soon as we attach a cable to the NIC.
Fixes: 8f8940118654 ("net: aquantia: add infrastructure to readout chip temperature")
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Igor Russkikh <irusskik@redhat.com>
Cc: David Arcari <darcari@redhat.com>
Cc: Igor Russkikh <irusskik@redhat.com>
Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c
index da726489e3c8..7bc51f8d6f2f 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c
@@ -337,7 +337,7 @@ static int aq_fw2x_get_phy_temp(struct aq_hw_s *self, int *temp)
/* Convert PHY temperature from 1/256 degree Celsius
* to 1/1000 degree Celsius.
*/
- *temp = temp_res * 1000 / 256;
+ *temp = (temp_res & 0xFFFF) * 1000 / 256;
return 0;
}
--
2.13.6