[PATCH net 0/2] pull-request: can 2026-03-10

[PATCH net 0/2] pull-request: can 2026-03-10

[Marc Kleine-Budde]

Hello netdev-team,

this is a pull request of 2 patches for net/main.

Haibo Chen's patch fixes the maximum allowed bit rate error, which was
broken in v6.19.

Wenyuan Li contributes a patch for the hi311x driver that adds missing
error checking in the caller of the hi3110_power_enable() function,
hi3110_open().

regards,
Marc

---

The following changes since commit e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69:

  mctp: i2c: fix skb memory leak in receive path (2026-03-10 11:10:55 +0100)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git tags/linux-can-fixes-for-7.0-20260310

for you to fetch changes up to 47bba09b14fa21712398febf36cb14fd4fc3bded:

  can: hi311x: hi3110_open(): add check for hi3110_power_enable() return value (2026-03-10 11:12:52 +0100)

----------------------------------------------------------------
linux-can-fixes-for-7.0-20260310

----------------------------------------------------------------
Haibo Chen (1):
      can: dev: keep the max bitrate error at 5%

Wenyuan Li (1):
      can: hi311x: hi3110_open(): add check for hi3110_power_enable() return value

 drivers/net/can/dev/calc_bittiming.c | 2 +-
 drivers/net/can/spi/hi311x.c         | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

[PATCH net 1/2] can: dev: keep the max bitrate error at 5%

[Marc Kleine-Budde]

From: Haibo Chen <haibo.chen@nxp.com>

Commit b360a13d44db ("can: dev: print bitrate error with two decimal
digits") changed calculation of the bit rate error from on-tenth of a
percent to on-hundredth of a percent, but forgot to adjust the scale of the
CAN_CALC_MAX_ERROR constant.

Keeping the existing logic unchanged: Only when the bitrate error exceeds
5% should an error be returned. Otherwise, simply output a warning log.

Fixes: b360a13d44db ("can: dev: print bitrate error with two decimal digits")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20260306-can-fix-v1-1-ac526cec6777@nxp.com
Cc: stable@kernel.org
[mkl: improve commit message]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/net/can/dev/calc_bittiming.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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)

base-commit: e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69
-- 
2.51.0

[PATCH net 2/2] can: hi311x: hi3110_open(): add check for hi3110_power_enable() return value

[Marc Kleine-Budde]

From: Wenyuan Li <2063309626@qq.com>

In hi3110_open(), the return value of hi3110_power_enable() is not checked.
If power enable fails, the device may not function correctly, while the
driver still returns success.

Add a check for the return value and propagate the error accordingly.

Signed-off-by: Wenyuan Li <2063309626@qq.com>
Link: https://patch.msgid.link/tencent_B5E2E7528BB28AA8A2A56E16C49BD58B8B07@qq.com
Fixes: 57e83fb9b746 ("can: hi311x: Add Holt HI-311x CAN driver")
[mkl: adjust subject, commit message and jump label]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/net/can/spi/hi311x.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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;
-- 
2.51.0

Re: [PATCH net 1/2] can: dev: keep the max bitrate error at 5%

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (main)
by Marc Kleine-Budde <mkl@pengutronix.de>:

On Tue, 10 Mar 2026 11:30:34 +0100 you wrote:
> From: Haibo Chen <haibo.chen@nxp.com>
> 
> Commit b360a13d44db ("can: dev: print bitrate error with two decimal
> digits") changed calculation of the bit rate error from on-tenth of a
> percent to on-hundredth of a percent, but forgot to adjust the scale of the
> CAN_CALC_MAX_ERROR constant.
> 
> [...]

Here is the summary with links:
  - [net,1/2] can: dev: keep the max bitrate error at 5%
    https://git.kernel.org/netdev/net/c/1eea46908c57
  - [net,2/2] can: hi311x: hi3110_open(): add check for hi3110_power_enable() return value
    https://git.kernel.org/netdev/net/c/47bba09b14fa

You are awesome, thank you!
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