[PATCH net-next 05/13] can: m_can: Return ERR_PTR on error in allocation
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2025-10-17 15:08:42
Also in:
linux-can
Subsystem:
can network drivers, mcan device driver, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Markus Schneider-Pargmann, Linus Torvalds
From: "Markus Schneider-Pargmann (TI.com)" <msp@baylibre.com> We have more detailed error values available, return them in the core driver and the calling drivers to return proper errors to callers. Reviewed-by: Vincent Mailhol <redacted> Reviewed-by: Dhruva Gole <redacted> Reviewed-by: Kendall Willis <redacted> Signed-off-by: Markus Schneider-Pargmann (TI.com) <msp@baylibre.com> Link: https://patch.msgid.link/20251001-topic-mcan-wakeup-source-v6-12-v10-3-4ab508ac5d1e@baylibre.com Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/net/can/m_can/m_can.c | 6 +++--- drivers/net/can/m_can/m_can_pci.c | 4 ++-- drivers/net/can/m_can/m_can_platform.c | 4 ++-- drivers/net/can/m_can/tcan4x5x-core.c | 4 ++-- 4 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index f00bdec3246a..10b5862b4880 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c@@ -2408,7 +2408,7 @@ struct m_can_classdev *m_can_class_allocate_dev(struct device *dev, sizeof(mram_config_vals) / 4); if (ret) { dev_err(dev, "Could not get Message RAM configuration."); - goto out; + return ERR_PTR(ret); } if (dev->of_node && of_property_read_bool(dev->of_node, "wakeup-source"))
@@ -2423,7 +2423,7 @@ struct m_can_classdev *m_can_class_allocate_dev(struct device *dev, net_dev = alloc_candev(sizeof_priv, tx_fifo_size); if (!net_dev) { dev_err(dev, "Failed to allocate CAN device"); - goto out; + return ERR_PTR(-ENOMEM); } class_dev = netdev_priv(net_dev);
@@ -2433,7 +2433,7 @@ struct m_can_classdev *m_can_class_allocate_dev(struct device *dev, m_can_of_parse_mram(class_dev, mram_config_vals); spin_lock_init(&class_dev->tx_handling_spinlock); -out: + return class_dev; } EXPORT_SYMBOL_GPL(m_can_class_allocate_dev);
diff --git a/drivers/net/can/m_can/m_can_pci.c b/drivers/net/can/m_can/m_can_pci.c
index 9ad7419f88f8..eb31ed1f9644 100644
--- a/drivers/net/can/m_can/m_can_pci.c
+++ b/drivers/net/can/m_can/m_can_pci.c@@ -111,8 +111,8 @@ static int m_can_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) mcan_class = m_can_class_allocate_dev(&pci->dev, sizeof(struct m_can_pci_priv)); - if (!mcan_class) - return -ENOMEM; + if (IS_ERR(mcan_class)) + return PTR_ERR(mcan_class); priv = cdev_to_priv(mcan_class);
diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c
index 4a412add2b8d..56da411878af 100644
--- a/drivers/net/can/m_can/m_can_platform.c
+++ b/drivers/net/can/m_can/m_can_platform.c@@ -87,8 +87,8 @@ static int m_can_plat_probe(struct platform_device *pdev) mcan_class = m_can_class_allocate_dev(&pdev->dev, sizeof(struct m_can_plat_priv)); - if (!mcan_class) - return -ENOMEM; + if (IS_ERR(mcan_class)) + return PTR_ERR(mcan_class); priv = cdev_to_priv(mcan_class);
diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c
index 39b0b5277b11..31cc9d0abd45 100644
--- a/drivers/net/can/m_can/tcan4x5x-core.c
+++ b/drivers/net/can/m_can/tcan4x5x-core.c@@ -416,8 +416,8 @@ static int tcan4x5x_can_probe(struct spi_device *spi) mcan_class = m_can_class_allocate_dev(&spi->dev, sizeof(struct tcan4x5x_priv)); - if (!mcan_class) - return -ENOMEM; + if (IS_ERR(mcan_class)) + return PTR_ERR(mcan_class); ret = m_can_check_mram_cfg(mcan_class, TCAN4X5X_MRAM_SIZE); if (ret)
--
2.51.0