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Writing a basic Linux device driver when you know nothing about Linux drivers

(crescentro.se)
374 points sbt567 | 1 comments | 22 Jun 25 10:29 UTC | HN request time: 0.242s | source
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bhasi ◴[26 Jun 25 06:32 UTC] No.44384727[source]▶
The title was misleading because the author wrote a userspace Rust driver and not a Linux kernel driver in C.
replies(1): >>44385208 #
amelius ◴[26 Jun 25 07:59 UTC] No.44385208[source]▶
Upon reading the title I thought this was going to be about how easy it is to write or modify a Linux driver when using a LLM even if you know nothing about the subject.
replies(1): >>44387120 #
1. Neywiny ◴[26 Jun 25 13:14 UTC] No.44387120[source]▶
No LLM needed. Kernel driver code for simple things is usually copy-paste-modify. Find something that works with an HID interrupt based device, and modify that. If you want a /sys led, copy from that. It's only if you try to push to mainline you need to worry about understanding it, but they'd probably smell LLM trash from miles away.