CODEWITHSUNDEEP
linux-kernellinux-device-driver
Reva V
Reva V

Reputation: 1

Device driver entry points accessing

Can different entry points in a function be accessed by other drivers?

I know that by using EXPORT_SYMBOL we can do it for functions and symbols. My confusion is can read/write entry points be exported. If I do so will be against good driver practice?

Upvotes: 0

Views: 283

Answers (1)

Cool Goose
Cool Goose

Reputation: 998

You can export any Global function and Variable using EXPORT_SYMBOL() even device file operations read() and write() too. It will be very difficult to call them from any kernel modules because of the parameters required to call them for example file pointer of the device.

Upvotes: 1

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