Bad DMA/do_IRQ errors on suspend/resume, with occasional freezing
- by Steve Kroon
Every time I suspend or resume my laptop (Dell Latitude E6520, bought this year), I get 2 messages of the form displayed on the console just before shutting down/starting up:
[ 407.107610] ehci_hcd 0000:00:1d.0: dma_pool_free buffer-128, f6f18000/36f18000 (bad dma)
On occasion, I get a message of the form:
[ 3753.979066] do_IRQ: 0.177 No irq…