On 22.04.2021 09:18:54, Marc Kleine-Budde wrote: > On 4/21/21 9:58 PM, Drew Fustini wrote: > > I am encountering similar error with the 5.10 raspberrypi kernel on > > RPi 4 with MCP2518FD: > > > > mcp251xfd spi0.0 can0: CRC read error at address 0x0010 (length=4, > > data=00 ad 58 67, CRC=0xbbfd) retrying > > What's the situation you see these errors? > > I'm not particular happy with that patch, as it only works around that one > particular bit flip issue. If you really hammer the register, the driver will > still notice CRC errors that can be explained by other bits flipping. Consider > this as the first order approximation of a higher order problem :) - the root > cause is still unknown. > > > Would it be possible for you to pull these patches into a v5.10 branch > > in your linux-rpi repo [1]? > > Here you are: > > https://github.com/marckleinebudde/linux-rpi/tree/v5.10-rpi/backport-performance-improvements > > I've included the UINC performance enhancements, too. The branch is compiled > tested only, though. I'll send a pull request to the rpi kernel after I've > testing feedback from you. Drew, Patrick, have you tested this branch? If so I'll send a pull request to the raspi kernel. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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