linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2019-11-20	net: qca_spi: Move reset_count to struct qcaspi	Stefan Wahren	1	-0/+1
	The reset counter is specific for every QCA700x chip. So move this into the private driver struct. Otherwise we get unpredictable reset behavior in setups with multiple QCA700x chips. Fixes: 291ab06ecf67 (net: qualcomm: new Ethernet over SPI driver for QCA7000) Signed-off-by: Stefan Wahren <stefan.wahren@in-tech.com> Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-08	net: qca_spi: Add available buffer space verification	Stefan Wahren	1	-0/+1
	Interferences on the SPI line could distort the response of available buffer space. So at least we should check that the response doesn't exceed the maximum available buffer space. In error case increase a new error counter and retry it later. This behavior avoids buffer errors in the QCA7000, which results in an unnecessary chip reset including packet loss. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-24	net: qca_spi: Introduce write register verification	Stefan Wahren	1	-0/+1
	The SPI protocol for the QCA7000 doesn't have any fault detection. In order to increase the drivers reliability in noisy environments, we could implement a write verification inspired by the enc28j60. This should avoid situations were the driver wrongly assumes the receive interrupt is enabled and miss all incoming packets. This function is disabled per default and can be controlled via module parameter wr_verify. Signed-off-by: Michael Heimpold <michael.heimpold@i2se.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-05	net: qca_spi: Fix race condition in spi transfers	Stefan Wahren	1	-5/+0
	With performance optimization the spi transfer and messages of basic register operations like qcaspi_read_register moved into the private driver structure. But they weren't protected against mutual access (e.g. between driver kthread and ethtool). So dumping the QCA7000 registers via ethtool during network traffic could make spi_sync hang forever, because the completion in spi_message is overwritten. So revert the optimization completely. Fixes: 291ab06ecf676 ("net: qualcomm: new Ethernet over SPI driver for QCA700") Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-30	net: qualcomm: rename qca_framing.c to qca_7k_common.c	Stefan Wahren	1	-1/+1
	As preparation for the upcoming UART driver we need a module which contains common functions for both interfaces. The module qca_framing is a good candidate but renaming to qca_7k_common would make it clear. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-30	net: qualcomm: use net_device_ops instead of direct call	Stefan Wahren	1	-3/+0
	There is no need to export qcaspi_netdev_open and qcaspi_netdev_close because they are also accessible via the net_device_ops. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-29	net: qualcomm: new Ethernet over SPI driver for QCA7000	Stefan Wahren	1	-0/+114
	This patch adds the Ethernet over SPI driver for the Qualcomm QCA7000 HomePlug GreenPHY. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>