Hi Christophe, sorry to be nitty picky but I still don't get this calculation + /* max tpm tx buffer(TPM_BUFSIZE) + max tpm rx buffer(TPM_BUFSIZE / 2) + * + MAX_SPI_LATENCY. + */ + phy->spi_xfer.tx_buf = devm_kmalloc(&dev->dev, (TPM_BUFSIZE + + (TPM_BUFSIZE / 2) + MAX_SPI_LATENCY), + GFP_KERNEL); + if (!phy->spi_xfer.tx_buf) + return -ENOMEM; + + phy->spi_xfer.rx_buf = devm_kmalloc(&dev->dev, (TPM_BUFSIZE + + (TPM_BUFSIZE / 2) + MAX_SPI_LATENCY), + GFP_KERNEL); + if (!phy->spi_xfer.rx_buf) + return -ENOMEM; and the comment + /* max tpm tx buffer(TPM_BUFSIZE) + max tpm rx buffer(TPM_BUFSIZE / 2) + * + MAX_SPI_LATENCY. does not help either. Why do you define TPM_BUFSIZE as 2048, add TPM_BUFSIZE/2 and something called MAX_SPI_LATENCY to it to use it as your buffer size? Latency is for me something timing related. Since you use this TPM_BUFSIZE only in these two lines I'd be happy with either define which has this magical 2048+2014+15 or (maybe better) add a reasonable comment describing the meaning of this strange calculation. Thanks, Peter -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html