bam_free_chan(9)

💅 bam_free_chan(9) — the "we're SO done here" cleanup era

okay bestie, welcome to the Kernel API Manual ✨ you're reading the page for bam_free_chan, and honestly? she's the friend who shows up after the party with a garbage bag. lowkey iconic. 🎀

🌸 NAME 🌸

bam_free_chan — frees dma resources associated with specific channel 🧹💖

✨ SYNOPSIS ✨

void bam_free_chan (struct dma_chan *chan );

it returns void, so like… nothing comes back. no receipt, no goodbye text, just vibes and freed memory. 💀

🦋 ARGUMENTS 🦋

• chan — the specified channel 💫 this is the one you're breaking up with. the channel in question. the main character of the deallocation arc.

🎀 DESCRIPTION 🎀

free the allocated fifo descriptor memory and channel resources 🔥 that's it, that's the whole job. she takes the fifo descriptor memory that got allocated, plus the channel resources, and she lets them go. closure, but make it kernel-space. periodt. 💅

ngl, this is the counterpart energy to actually grabbing resources in the first place — so if you're the one who allocated, you're the one who frees. no cap. 🫶

🌈 SEE ALSO 🌈

• Kernel file ./drivers/dma/qcom/bam_dma.c — the source file where all this lives, go read her 👑
• bam_addr(9)
• bam_reset(9)
• bam_reset_channel(9)
• bam_chan_init_hw(9)
• bam_alloc_chan(9)
• bam_slave_config(9)
• bam_prep_slave_sg(9)
• bam_dma_terminate_all(9)
• bam_pause(9)
• bam_resume(9)
• process_channel_irqs(9)
• bam_dma_irq(9)
• bam_tx_status(9)
• bam_apply_new_config(9)
• bam_start_dma(9)
• dma_tasklet(9)
• bam_issue_pending(9)
• bam_dma_free_desc(9)
• bam_init(9)

that's the whole friend group, fr fr — go say hi to all of them 💜

and that's the page, bestie!! 🍓 this one comes from ./drivers/dma/qcom, dated October 2026 — mwah, take care, hydrate, and free your channels 💖✨🧚