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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2026-03-19 16:15:33 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2026-03-19 16:15:33 +0100
commit7e2dc8ed7862ac622b5a59953b679de97001dc83 (patch)
treed2d2cf61a22f5a6404000ee007c5e80bc2d9eca9 /drivers/net/can
parenta7e8c9cc3a13baf3dcf9734dd55609aa7ff9a1a0 (diff)
parent4a2b0ed2ac7abe9743e1559d212075a0ebac96b3 (diff)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/can')
-rw-r--r--drivers/net/can/dev/calc_bittiming.c2
-rw-r--r--drivers/net/can/spi/hi311x.c5
-rw-r--r--drivers/net/can/usb/gs_usb.c22
3 files changed, 21 insertions, 8 deletions
diff --git a/drivers/net/can/dev/calc_bittiming.c b/drivers/net/can/dev/calc_bittiming.c
index cc4022241553..42498e9d3f38 100644
--- a/drivers/net/can/dev/calc_bittiming.c
+++ b/drivers/net/can/dev/calc_bittiming.c
@@ -8,7 +8,7 @@
#include <linux/units.h>
#include <linux/can/dev.h>
-#define CAN_CALC_MAX_ERROR 50 /* in one-tenth of a percent */
+#define CAN_CALC_MAX_ERROR 500 /* max error 5% */
/* CiA recommended sample points for Non Return to Zero encoding. */
static int can_calc_sample_point_nrz(const struct can_bittiming *bt)
diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c
index e00d3dbc4cf4..91b1fa970f8f 100644
--- a/drivers/net/can/spi/hi311x.c
+++ b/drivers/net/can/spi/hi311x.c
@@ -755,7 +755,9 @@ static int hi3110_open(struct net_device *net)
return ret;
mutex_lock(&priv->hi3110_lock);
- hi3110_power_enable(priv->transceiver, 1);
+ ret = hi3110_power_enable(priv->transceiver, 1);
+ if (ret)
+ goto out_close_candev;
priv->force_quit = 0;
priv->tx_skb = NULL;
@@ -790,6 +792,7 @@ static int hi3110_open(struct net_device *net)
hi3110_hw_sleep(spi);
out_close:
hi3110_power_enable(priv->transceiver, 0);
+ out_close_candev:
close_candev(net);
mutex_unlock(&priv->hi3110_lock);
return ret;
diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index d8b2dd74b3a1..6faa877d33ae 100644
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -772,9 +772,8 @@ device_detach:
}
}
-static int gs_usb_set_bittiming(struct net_device *netdev)
+static int gs_usb_set_bittiming(struct gs_can *dev)
{
- struct gs_can *dev = netdev_priv(netdev);
struct can_bittiming *bt = &dev->can.bittiming;
struct gs_device_bittiming dbt = {
.prop_seg = cpu_to_le32(bt->prop_seg),
@@ -791,9 +790,8 @@ static int gs_usb_set_bittiming(struct net_device *netdev)
GFP_KERNEL);
}
-static int gs_usb_set_data_bittiming(struct net_device *netdev)
+static int gs_usb_set_data_bittiming(struct gs_can *dev)
{
- struct gs_can *dev = netdev_priv(netdev);
struct can_bittiming *bt = &dev->can.fd.data_bittiming;
struct gs_device_bittiming dbt = {
.prop_seg = cpu_to_le32(bt->prop_seg),
@@ -1057,6 +1055,20 @@ static int gs_can_open(struct net_device *netdev)
if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP)
flags |= GS_CAN_MODE_HW_TIMESTAMP;
+ rc = gs_usb_set_bittiming(dev);
+ if (rc) {
+ netdev_err(netdev, "failed to set bittiming: %pe\n", ERR_PTR(rc));
+ goto out_usb_kill_anchored_urbs;
+ }
+
+ if (ctrlmode & CAN_CTRLMODE_FD) {
+ rc = gs_usb_set_data_bittiming(dev);
+ if (rc) {
+ netdev_err(netdev, "failed to set data bittiming: %pe\n", ERR_PTR(rc));
+ goto out_usb_kill_anchored_urbs;
+ }
+ }
+
/* finally start device */
dev->can.state = CAN_STATE_ERROR_ACTIVE;
dm.flags = cpu_to_le32(flags);
@@ -1370,7 +1382,6 @@ static struct gs_can *gs_make_candev(unsigned int channel,
dev->can.state = CAN_STATE_STOPPED;
dev->can.clock.freq = le32_to_cpu(bt_const.fclk_can);
dev->can.bittiming_const = &dev->bt_const;
- dev->can.do_set_bittiming = gs_usb_set_bittiming;
dev->can.ctrlmode_supported = CAN_CTRLMODE_CC_LEN8_DLC;
@@ -1394,7 +1405,6 @@ static struct gs_can *gs_make_candev(unsigned int channel,
* GS_CAN_FEATURE_BT_CONST_EXT is set.
*/
dev->can.fd.data_bittiming_const = &dev->bt_const;
- dev->can.fd.do_set_data_bittiming = gs_usb_set_data_bittiming;
}
if (feature & GS_CAN_FEATURE_TERMINATION) {