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> - u32 time_left; > + unsigned long time_left; > > for (i = 0; i < multi_xfer->msg_idx_cnt - 1; i++) { > reinit_completion(transfer_comp); > > if (multi_xfer->msg_idx_cnt != multi_xfer->irq_cnt) { > time_left = wait_for_completion_timeout(transfer_comp, > - transfer_timeout_msecs); > + timeout_jiffies); > if (!time_left) { > dev_err(dev, "%s: Transfer timeout\n", __func__); > return -ETIMEDOUT; > @@ -778,8 +787,22 @@ static int geni_i2c_gpi(struct geni_i2c_dev *gi2c, struct i2c_msg msgs[], > dma_async_issue_pending(gi2c->tx_c); > > if ((msg_idx == (gi2c->num_msgs - 1)) || flags & DMA_PREP_INTERRUPT) { > + size_t max_len = 0; > + int j; > + > + /* > + * Use the longest message as the timeout base: one completion > + * covers the whole BEI batch, so the budget must fit the worst > + * case single-message wire time. > + */ Using only the longest message length may under-estimate the required Timeout. > + for (j = 0; j < gi2c->num_msgs; j++) > + max_len = max_t(size_t, max_len, msgs[j].len); can we use sum(msgs[i].len) instead of max() ?> + i2c_update_timeout(&gi2c->adap, gi2c->clk_freq_out, max_len, > + I2C_TIMEOUT_SAFETY_COEFFICIENT, > + I2C_TIMEOUT_MIN_USEC); > ret = geni_i2c_gpi_multi_xfer_timeout_handler(gi2c->se.dev, gi2c_gpi_xfer, > - XFER_TIMEOUT, &gi2c->done); > + gi2c->adap.timeout, > + &gi2c->done); > if (ret) { > dev_err(gi2c->se.dev, > "I2C multi write msg transfer timeout: %d\n", > @@ -899,7 +922,10 @@ static int geni_i2c_gpi_xfer(struct geni_i2c_dev *gi2c, struct i2c_msg msgs[], i > > if (!gi2c->is_tx_multi_desc_xfer) { > dma_async_issue_pending(gi2c->tx_c); > - time_left = wait_for_completion_timeout(&gi2c->done, XFER_TIMEOUT); > + i2c_update_timeout(&gi2c->adap, gi2c->clk_freq_out, msgs[i].len, > + I2C_TIMEOUT_SAFETY_COEFFICIENT, > + I2C_TIMEOUT_MIN_USEC); > + time_left = wait_for_completion_timeout(&gi2c->done, gi2c->adap.timeout); > if (!time_left) { > dev_err(gi2c->se.dev, "%s:I2C timeout\n", __func__); > gi2c->err = -ETIMEDOUT; >