[PATCH V4 03/15 net-next] qca_spi: Improve SPI IRQ handling
From: Stefan Wahren <wahrenst@gmx.net>
Date: 2024-01-28 20:11:36
Also in:
lkml
Subsystem:
networking drivers, qualcomm atheros qca7k ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Stefan Wahren, Linus Torvalds
The functions qcaspi_netdev_open/close are responsible of request & free of the SPI interrupt, which wasn't the best choice because allocation problems are discovered not during probe. So let us split IRQ allocation & enabling, so we can take advantage of a device managed IRQ. Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> --- drivers/net/ethernet/qualcomm/qca_spi.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index fe50c2dd7cc8..3f7e38a11ba0 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c@@ -688,7 +688,6 @@ qcaspi_netdev_open(struct net_device *dev) { struct qcaspi *qca = netdev_priv(dev); struct task_struct *thread; - int ret = 0; if (!qca) return -EINVAL;
@@ -709,14 +708,7 @@ qcaspi_netdev_open(struct net_device *dev) qca->spi_thread = thread; - ret = request_irq(qca->spi_dev->irq, qcaspi_intr_handler, 0, - dev->name, qca); - if (ret) { - netdev_err(dev, "%s: unable to get IRQ %d (irqval=%d).\n", - QCASPI_DRV_NAME, qca->spi_dev->irq, ret); - kthread_stop(qca->spi_thread); - return ret; - } + enable_irq(qca->spi_dev->irq); /* SPI thread takes care of TX queue */
@@ -731,7 +723,7 @@ qcaspi_netdev_close(struct net_device *dev) netif_stop_queue(dev); qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0, wr_verify); - free_irq(qca->spi_dev->irq, qca); + disable_irq(qca->spi_dev->irq); if (qca->spi_thread) { kthread_stop(qca->spi_thread);
@@ -989,6 +981,15 @@ qca_spi_probe(struct spi_device *spi) spi_set_drvdata(spi, qcaspi_devs); + ret = devm_request_irq(&spi->dev, spi->irq, qcaspi_intr_handler, + IRQF_NO_AUTOEN, qca->net_dev->name, qca); + if (ret) { + dev_err(&spi->dev, "Unable to get IRQ %d (irqval=%d).\n", + spi->irq, ret); + free_netdev(qcaspi_devs); + return ret; + } + ret = of_get_ethdev_address(spi->dev.of_node, qca->net_dev); if (ret) { eth_hw_addr_random(qca->net_dev); --
2.34.1