ps3: fix rare issue that reenabling rx DMA fails
authorMasakazu Mokuno <mokuno@sm.sony.co.jp>
Fri, 20 Jul 2007 08:35:54 +0000 (17:35 +0900)
committerJeff Garzik <jeff@garzik.org>
Tue, 24 Jul 2007 20:28:40 +0000 (16:28 -0400)
commit583aae1094d28aa1d58360318388c11d2ae7ed9c
treec05810bf1cc055d67eb71c628cb464c3622348b4
parent39a3d2d19cc8dc9d7ec3a1fefe95d7de0c6dc317
ps3: fix rare issue that reenabling rx DMA fails

Fixed rare issue that 'lv1_net_start_rx_dma failed, status=-9" was shown
in dmesg.  This meant restarting rx DMA had been rejected by the hypervisor.
This issue would caused if the guest os requested starting DMA when
the hypervisor thought the DMA was in progress.
The state machine for DMA status of the hypervisor would be updated
by processing interrupt in the hypervisor.
Thus we should wait for the interrupt delivery before restarting
DMA.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/net/ps3_gelic_net.c
drivers/net/ps3_gelic_net.h