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firewire: Rework async receive DMA.

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The old DMA program for receiving async packets stops DMA while
processing received packets and only expects one packet per
interrupt.  Stopping DMA can silently drop packets and we need to
handle multiple received packets per interrupt.

This new version keeps DMA running at all times and just append new
pages as buffers fill up, and supports multiple packets per interrupt.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Kristian Høgsberg
2007-02-06 14:49:30 -05:00
committed by Stefan Richter
parent 641f8791f0
commit 32b46093a0
2 changed files with 131 additions and 82 deletions
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3
drivers/firewire/fw-transaction.c
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@@ -640,7 +640,8 @@ fw_core_handle_response(struct fw_card *card, struct fw_packet *p)
spin_unlock_irqrestore(&card->lock, flags);
if (&t->link == &card->transaction_list) {
fw_notify("Unsolicited response\n");
fw_notify("Unsolicited response (source %x, tlabel %x)\n",
source, tlabel);
return;
}