Commit 06b0d7fe authored Oct 11, 2019 by Igor Russkikh Committed by David S. Miller Oct 14, 2019

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: 8f894011 ("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>

parent 33902b4a

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -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		/* Convert PHY temperature from 1/256 degree Celsius
	* to 1/1000 degree Celsius.		* to 1/1000 degree Celsius.
	*/		*/
	temp = temp_res 1000 / 256;		temp = (temp_res & 0xFFFF) 1000 / 256;

	return 0;		return 0;
	}		}