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drivers: can: mcan: give back semaphore on failed TX

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Give back semaphore on failed TX

Signed-off-by: Grant Ramsay <gramsay@enphaseenergy.com>
This commit is contained in:
Grant Ramsay 2023-08-03 13:40:13 +12:00 • committed by Fabio Baltieri
commit e98f7b8fb7
1 changed files with 8 additions and 4 deletions
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12
drivers/can/can_mcan.c
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@ -912,7 +912,7 @@ int can_mcan_send(const struct device *dev, const struct can_frame *frame, k_tim
&tx_hdr, sizeof(struct can_mcan_tx_buffer_hdr));
if (err != 0) {
LOG_ERR("failed to write Tx Buffer header (err %d)", err);
goto unlock;
goto err_unlock;
}
err = can_mcan_write_mram(dev, config->mram_offsets[CAN_MCAN_MRAM_CFG_TX_BUFFER] + put_idx *
@ -921,7 +921,7 @@ int can_mcan_send(const struct device *dev, const struct can_frame *frame, k_tim
&frame->data_32, ROUND_UP(data_length, sizeof(uint32_t)));
if (err != 0) {
LOG_ERR("failed to write Tx Buffer data (err %d)", err);
goto unlock;
goto err_unlock;
}
__ASSERT_NO_MSG(put_idx <= cbs->num_tx);
@ -930,11 +930,15 @@ int can_mcan_send(const struct device *dev, const struct can_frame *frame, k_tim
err = can_mcan_write_reg(dev, CAN_MCAN_TXBAR, BIT(put_idx));
if (err != 0) {
goto unlock;
goto err_unlock;
}
unlock:
k_mutex_unlock(&data->tx_mtx);
return 0;
err_unlock:
k_mutex_unlock(&data->tx_mtx);
k_sem_give(&data->tx_sem);
return err;
}