xilinx_dpdma_handle_err_irq(9)

💅 xilinx_dpdma_handle_err_irq — from the Kernel API Manual, bestie

okay so picture this: we're deep in the ./drivers/dma/xilinx folder, and there's this little function that's literally the error-interrupt bouncer for the DPDMA. she doesn't do small talk, she just handles it. let's get into it 🫶

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✨ NAME ✨

xilinx_dpdma_handle_err_irq — no cap, her whole job is: handle DPDMA error interrupt. that's it, that's the vibe check and she passes.

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🌸 SYNOPSIS 🌸

void xilinx_dpdma_handle_err_irq (struct xilinx_dpdma_device *xdev , u32
isr , u32 eisr );

she returns void, she takes three args, she's not asking for your opinion. main character energy fr fr 💅

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🎀 ARGUMENTS 🎀

• xdev — the DPDMA device itself. the icon, the moment, the struct xilinx_dpdma_device * of it all 🦋
• isr — the masked Interrupt Status Register. yes bestie, masked, don't forget it 💜
• eisr — the Error Interrupt Status Register. she's the one who tells you what actually went wrong 😭

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🔥 DESCRIPTION 🔥

so what does she do? she handles it if any error occurs, based on isr and eisr — both of them, together, iykyk.

and here's the part where you gotta listen: this function disables the corresponding error interrupts. so those interrupts are off now. and they should be re-enabled once handling is done. not "maybe", not "someone else will get it" — should be re-enabled once handling is done. don't leave them hanging, that's giving bad friend behavior 🙈

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⭐ SEE ALSO ⭐

the whole friend group, and honestly the group chat is long, so buckle up:

• Kernel file ./drivers/dma/xilinx/xilinx_dpdma.c
• struct xilinx_dpdma_hw_desc(9)
• struct xilinx_dpdma_sw_desc(9)
• struct xilinx_dpdma_tx_desc(9)
• struct xilinx_dpdma_chan(9)
• struct xilinx_dpdma_device(9)
• xilinx_dpdma_sw_desc_set_dma_addrs(9)
• xilinx_dpdma_chan_alloc_sw_desc(9)
• xilinx_dpdma_chan_free_sw_desc(9)
• xilinx_dpdma_chan_dump_tx_desc(9)
• xilinx_dpdma_chan_alloc_tx_desc(9)
• xilinx_dpdma_chan_free_tx_desc(9)
• xilinx_dpdma_chan_prep_cyclic(9)
• xilinx_dpdma_chan_prep_interleaved_dma(9)
• xilinx_dpdma_chan_enable(9)
• xilinx_dpdma_chan_disable(9)
• xilinx_dpdma_chan_pause(9)
• xilinx_dpdma_chan_unpause(9)
• xilinx_dpdma_chan_queue_transfer(9)
• xilinx_dpdma_chan_ostand(9)
• xilinx_dpdma_chan_notify_no_ostand(9)
• xilinx_dpdma_chan_wait_no_ostand(9)
• xilinx_dpdma_chan_poll_no_ostand(9)
• xilinx_dpdma_chan_stop(9)
• xilinx_dpdma_chan_done_irq(9)
• xilinx_dpdma_chan_vsync_irq(9)
• xilinx_dpdma_chan_err(9)
• xilinx_dpdma_chan_handle_err(9)
• xilinx_dpdma_alloc_chan_resources(9)
• xilinx_dpdma_free_chan_resources(9)
• xilinx_dpdma_terminate_all(9)
• xilinx_dpdma_synchronize(9)
• xilinx_dpdma_err(9)
• xilinx_dpdma_enable_irq(9)
• xilinx_dpdma_disable_irq(9)
• xilinx_dpdma_chan_err_task(9)

like, that's the entire ensemble cast and every single one of them ate 🔥

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🧚 quick reminder before you go: she disables those error interrupts. re-enable them when handling's done. periodt.

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okay that's the page!! huge love to ./drivers/dma/xilinx for sitting in the source corner, and shoutout to October 2026 for the version/date stamp — xilinx_dpdma_handle_err_irq(9) out, mwah 💖🎀✨