of_dma_match_channel(9)

🌸 NAME 🌸

Okay bestie, welcome to the of_dma_match_channel(9) page from the Kernel API Manual. This one is literally: of_dma_match_channel — check if a DMA specifier matches name. That's the whole vibe. 💅

✨ SYNOPSIS ✨

int of_dma_match_channel (struct device_node *np , const char *name ,
       int index , struct of_phandle_args *dma_spec );

🎀 ARGUMENTS 🎀

• np — the device node to look for DMA channels. This is where the search happens, bestie.
• name — the channel name to be matched. The name in question, fr fr.
• index — index of DMA specifier in list of DMA specifiers. It's giving "which one are we checking" energy.
• dma_spec — pointer to DMA specifier as found in the device tree. Yep, that exact kind of pointer.

💅 DESCRIPTION 💅

Okay so here's the tea: this checks if the DMA specifier pointed to by the index in a list of DMA specifiers matches the name provided.

Returns 0 if the name matches and a valid pointer to the DMA specifier is found. Otherwise returns -ENODEV. That's it. No cap. ✨

🦋 SEE ALSO 🦋

• Kernel file ./drivers/dma/of-dma.c
• of_dma_find_controller(9)
• of_dma_router_xlate(9)
• of_dma_controller_register(9)
• of_dma_controller_free(9)
• of_dma_router_register(9)
• of_dma_request_slave_channel(9)
• of_dma_simple_xlate(9)
• of_dma_xlate_by_chan_id(9)

That's the whole page, bestie. Cute sign-off: it comes from ./drivers/dma, dated October 2026, and it's the of_dma_match_channel(9) manual page. Periodt. 💖