On 03/14/2011 01:08 PM, Maxime Bizon wrote:
Hi Jeff& all, I'm using an Intel CE4100 platform (Sodaville), and when I load the ahci driver I get a short lock, then this message. On the original ahci driver (back in 2007), the ata port interrupts were not enabled until irq handler was registred (in ahci_thaw()). But since commit 1c954a4d9a9e351fa3509533fd8dd5f3821206cd (ahci: clean up PORT_IRQ_BAD_PMP enabling), it is now done early in ahci_pmp_attach/ahci_pmp_detach: ata_host_activate => port_start() callback => ahci_port_resume() before ahci interrupt handler is even registered. On my board, port irq stat is 0x00400040 before port mask is changed, that's why interrupt is triggered immediately. Any idea on the clean way to fix this ?
Where is ahci_thaw being called? It shouldn't be called before the IRQ handler is registered - I think it should only be called from the error handler which would be way later..
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