5.4-stable review patch. If anyone has any objections, please let me know.
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From: Stefan Wahren wahrenst@gmx.net
[ Upstream commit 4dba406fac06b009873fe7a28231b9b7e4288b09 ]
Storing the maximum clock speed in module parameter qcaspi_clkspeed has the unintended side effect that the first probed instance defines the value for all other instances. Fix this issue by storing it in max_speed_hz of the relevant SPI device.
This fix keeps the priority of the speed parameter (module parameter, device tree property, driver default). Btw this uses the opportunity to get the rid of the unused member clkspeed.
Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000") Signed-off-by: Stefan Wahren wahrenst@gmx.net Link: https://patch.msgid.link/20241206184643.123399-2-wahrenst@gmx.net Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/qualcomm/qca_spi.c | 24 ++++++++++-------------- drivers/net/ethernet/qualcomm/qca_spi.h | 1 - 2 files changed, 10 insertions(+), 15 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c index 036ab9dfe7fc..ff477e27a3fe 100644 --- a/drivers/net/ethernet/qualcomm/qca_spi.c +++ b/drivers/net/ethernet/qualcomm/qca_spi.c @@ -823,7 +823,6 @@ qcaspi_netdev_init(struct net_device *dev)
dev->mtu = QCAFRM_MAX_MTU; dev->type = ARPHRD_ETHER; - qca->clkspeed = qcaspi_clkspeed; qca->burst_len = qcaspi_burst_len; qca->spi_thread = NULL; qca->buffer_size = (dev->mtu + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN + @@ -912,17 +911,15 @@ qca_spi_probe(struct spi_device *spi) legacy_mode = of_property_read_bool(spi->dev.of_node, "qca,legacy-mode");
- if (qcaspi_clkspeed == 0) { - if (spi->max_speed_hz) - qcaspi_clkspeed = spi->max_speed_hz; - else - qcaspi_clkspeed = QCASPI_CLK_SPEED; - } + if (qcaspi_clkspeed) + spi->max_speed_hz = qcaspi_clkspeed; + else if (!spi->max_speed_hz) + spi->max_speed_hz = QCASPI_CLK_SPEED;
- if ((qcaspi_clkspeed < QCASPI_CLK_SPEED_MIN) || - (qcaspi_clkspeed > QCASPI_CLK_SPEED_MAX)) { - dev_err(&spi->dev, "Invalid clkspeed: %d\n", - qcaspi_clkspeed); + if (spi->max_speed_hz < QCASPI_CLK_SPEED_MIN || + spi->max_speed_hz > QCASPI_CLK_SPEED_MAX) { + dev_err(&spi->dev, "Invalid clkspeed: %u\n", + spi->max_speed_hz); return -EINVAL; }
@@ -947,14 +944,13 @@ qca_spi_probe(struct spi_device *spi) return -EINVAL; }
- dev_info(&spi->dev, "ver=%s, clkspeed=%d, burst_len=%d, pluggable=%d\n", + dev_info(&spi->dev, "ver=%s, clkspeed=%u, burst_len=%d, pluggable=%d\n", QCASPI_DRV_VERSION, - qcaspi_clkspeed, + spi->max_speed_hz, qcaspi_burst_len, qcaspi_pluggable);
spi->mode = SPI_MODE_3; - spi->max_speed_hz = qcaspi_clkspeed; if (spi_setup(spi) < 0) { dev_err(&spi->dev, "Unable to setup SPI device\n"); return -EFAULT; diff --git a/drivers/net/ethernet/qualcomm/qca_spi.h b/drivers/net/ethernet/qualcomm/qca_spi.h index d13a67e20d65..203941d5d72a 100644 --- a/drivers/net/ethernet/qualcomm/qca_spi.h +++ b/drivers/net/ethernet/qualcomm/qca_spi.h @@ -101,7 +101,6 @@ struct qcaspi { #endif
/* user configurable options */ - u32 clkspeed; u8 legacy_mode; u16 burst_len; };