Files
linux/drivers/net
Stephane Grosjean 5d4c94ed9f can: peak_canfd: fix firmware < v3.3.0: limit allocation to 32-bit DMA addr only
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@peak-system.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2018-07-23 14:34:45 +02:00
..
2018-06-12 16:19:22 -07:00
2018-06-12 16:19:22 -07:00
2018-06-12 16:19:22 -07:00
2018-06-12 16:19:22 -07:00
2018-05-28 23:02:22 -04:00
2018-03-27 13:18:09 -04:00
2018-05-28 22:59:54 -04:00
2018-07-16 13:38:29 -07:00