On 1/22/21 4:02 AM, Su Yanjun wrote: > Recently i use mcp2518fd on 4.x kernel which multiple write is not > backported, regmap_raw_write will cause old kernel crash because the > tx buffer in driver is smaller then 2K. Use regmap_bulk_write instead > for compatibility. Hmmm, this patch will never be backported to any 4.x kernel, as the driver is not available on these kernels. You have to carry patches for these kernels anyway, so I think I'll not take that patch. Sorry. Drop me a note if you are interested in updating your kernel to a recent v5.11 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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