On Wed, 7 Nov 2007 17:10:52 +0900 Paul Mundt <lethal@xxxxxxxxxxxx> wrote: > By default ata_host_activate() expects a valid IRQ in order to > successfully register the host. This patch enables a special case > for registering polling-only hosts that either don't have IRQs > or have buggy IRQ generation (either in terms of handling or > sensing), which otherwise work fine. > > Hosts that want to use polling mode can simply set ATA_FLAG_PIO_POLLING > and pass in a NULL IRQ handler or invalid (< 0) IRQ. NAK Zero is "no IRQ", please use that for polling not "< 0" > + * A NULL @irq_handler or invalid IRQ skips the IRQ registration > + * and expects the host to have set polling mode on the port. > + * There is no need to llow NULL irq_handler as a different case here. Any caller can provide (NULL, 0). If anything you might want to warn if they provide IRQ 0, and a handler - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
