kernel/linux.git/drivers/net/ethernet/qualcomm, branch v6.4

net: qca_spi: Avoid high load if QCA7000 is not available

2023-06-19T08:37:25+00:00

In case the QCA7000 is not available via SPI (e.g. in reset), the driver will cause a high load. The reason for this is that the synchronization is never finished and schedule() is never called. Since the synchronization is not timing critical, it's safe to drop this from the scheduling condition. Signed-off-by: Stefan Wahren Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000") Signed-off-by: David S. Miller

Merge tag 'spi-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2023-04-27T18:02:26+00:00

Pull spi updates from Mark Brown: "A fairly standard release for SPI with the exception of a change to the API for specifying chip selects done in preparation for supporting devices with more than one chip select, this required some mechanical changes throughout the tree which have been cooking in -next happily for a while. There's also a new API to allow us to support TPM chips on half duplex controllers. Summary: - Refactoring in preparation for supporting multiple chip selects for a single device, needed by some flash devices, which required a change in the SPI device API visible throughout the tree - Support for hardware assisted interaction with SPI TPMs on half duplex controllers, implemented on nVidia Tedra210 QuadSPI - Optimisation for large transfers on fsl-cpm devices - Cleanups around device property use which fix some sisues with fwnode - Use of both void remove() and devm_platform_.*ioremap_resource() - Support for AMD Pensando Elba, Amlogic A1, Cadence device mode, Intel MetorLake-S and StarFive J7110 QuadSPI" * tag 'spi-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (185 commits) spi: bcm63xx: use macro DEFINE_SIMPLE_DEV_PM_OPS spi: tegra210-quad: Enable TPM wait polling spi: Add TPM HW flow flag spi: bcm63xx: remove PM_SLEEP based conditional compilation spi: cadence-quadspi: use macro DEFINE_SIMPLE_DEV_PM_OPS spi: spi-cadence: Add support for Slave mode spi: spi-cadence: Switch to spi_controller structure spi: cadence-quadspi: fix suspend-resume implementations spi: dw: Add support for AMD Pensando Elba SoC spi: dw: Add AMD Pensando Elba SoC SPI Controller spi: cadence-quadspi: Disable the SPI before reconfiguring spi: cadence-quadspi: Update the read timeout based on the length spi: spi-loopback-test: Add module param for iteration length spi: add support for Amlogic A1 SPI Flash Controller dt-bindings: spi: add Amlogic A1 SPI controller spi: fsl-spi: No need to check transfer length versus word size spi: fsl-spi: Change mspi_apply_cpu_mode_quirks() to void spi: fsl-cpm: Use 16 bit mode for large transfers with even size spi: fsl-spi: Re-organise transfer bits_per_word adaptation spi: fsl-spi: Fix CPM/QE mode Litte Endian ...

net: ethernet: Add missing depends on MDIO_DEVRES

2023-04-13T03:38:48+00:00

A number of MDIO drivers make use of devm_mdiobus_alloc_size(). This is only available when CONFIG_MDIO_DEVRES is enabled. Add missing depends or selects, depending on if there are circular dependencies or not. This avoids linker errors, especially for randconfig builds. Signed-off-by: Andrew Lunn Reviewed-by: Jacob Keller Link: https://lore.kernel.org/r/20230409150204.2346231-1-andrew@lunn.ch Signed-off-by: Jakub Kicinski

net: qcom/emac: Fix use after free bug in emac_remove due to race condition

2023-03-20T09:11:18+00:00

In emac_probe, &adpt->work_thread is bound with emac_work_thread. Then it will be started by timeout handler emac_tx_timeout or a IRQ handler emac_isr. If we remove the driver which will call emac_remove to make cleanup, there may be a unfinished work. The possible sequence is as follows: Fix it by finishing the work before cleanup in the emac_remove and disable timeout response. CPU0 CPU1 |emac_work_thread emac_remove | free_netdev | kfree(netdev); | |emac_reinit_locked |emac_mac_down |//use netdev Fixes: b9b17debc69d ("net: emac: emac gigabit ethernet controller driver") Signed-off-by: Zheng Wang Signed-off-by: David S. Miller

net: Replace all spi->chip_select and spi->cs_gpiod references with function call

2023-03-11T12:34:02+00:00

Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod members of struct spi_device to be an array. But changing the type of these members to array would break the spi driver functionality. To make the transition smoother introduced four new APIs to get/set the spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and spi->cs_gpiod references with get or set API calls. While adding multi-cs support in further patches the chip_select & cs_gpiod members of the spi_device structure would be converted to arrays & the "idx" parameter of the APIs would be used as array index i.e., spi->chip_select[idx] & spi->cs_gpiod[idx] respectively. Signed-off-by: Amit Kumar Mahapatra Reviewed-by: Michal Simek Link: https://lore.kernel.org/r/20230310173217.3429788-3-amit.kumar-mahapatra@amd.com Signed-off-by: Mark Brown

net: qualcomm: rmnet: add ethtool support for configuring tx aggregation

2023-01-13T10:23:52+00:00

Add support for ETHTOOL_COALESCE_TX_AGGR for configuring the tx aggregation settings. Signed-off-by: Daniele Palmas Signed-off-by: David S. Miller

net: qualcomm: rmnet: add tx packets aggregation

2023-01-13T10:23:52+00:00

Add tx packets aggregation. Bidirectional TCP throughput tests through iperf with low-cat Thread-x based modems revelead performance issues both in tx and rx. The Windows driver does not show this issue: inspecting USB packets revealed that the only notable change is the driver enabling tx packets aggregation. Tx packets aggregation is by default disabled and can be enabled by increasing the value of ETHTOOL_A_COALESCE_TX_MAX_AGGR_FRAMES. The maximum aggregated size is by default set to a reasonably low value in order to support the majority of modems. This implementation is based on patches available in Code Aurora repositories (msm kernel) whose main authors are Subash Abhinov Kasiviswanathan Sean Tranchetti Signed-off-by: Daniele Palmas Reviewed-by: Subash Abhinov Kasiviswanathan Signed-off-by: David S. Miller

net: Remove the obsolte u64_stats_fetch_*_irq() users (drivers).

2022-10-29T03:13:54+00:00

Now that the 32bit UP oddity is gone and 32bit uses always a sequence count, there is no need for the fetch_irq() variants anymore. Convert to the regular interface. Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior Acked-by: Peter Zijlstra (Intel) Signed-off-by: Jakub Kicinski

net: drop the weight argument from netif_napi_add

2022-09-29T01:57:14+00:00

We tell driver developers to always pass NAPI_POLL_WEIGHT as the weight to netif_napi_add(). This may be confusing to newcomers, drop the weight argument, those who really need to tweak the weight can use netif_napi_add_weight(). Acked-by: Marc Kleine-Budde # for CAN Link: https://lore.kernel.org/r/20220927132753.750069-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

net: ethernet: rmnet: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

2022-09-28T08:40:31+00:00

Zero-length arrays are deprecated and we are moving towards adopting C99 flexible-array members, instead. So, replace zero-length arrays declarations in anonymous union with the new DECLARE_FLEX_ARRAY() helper macro. This helper allows for flexible-array members in unions. Link: https://github.com/KSPP/linux/issues/193 Link: https://github.com/KSPP/linux/issues/221 Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook Signed-off-by: David S. Miller