On 06/21/2018 03:23 PM, Stephane Grosjean wrote: > The DMA logic in firmwares < v3.3.0 embedded in the PCAN-PCIe FD cards > family is not capable of handling a mix of 32-bit and 64-bit logical > addresses. If the board is equipped with 2 or 4 CAN ports, then such a > situation might lead to a PCIe Bus Error "Malformed TLP" packet > as well as "irq xx: nobody cared" issue. > > This patch adds a workaround that requests only 32-bit DMA addresses > when these might be allocated outside of the 4 GB area. > > This issue has been fixed in firmware v3.3.0 and next. > > Signed-off-by: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx> Applied to linux-can and add stable on Cc. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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