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| author |   David S. Miller <davem@davemloft.net> | 2009-02-28 15:36:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-28 15:36:58 -0800 |
| commit | 18963caaf55240d6a0491bdb27b7fef2882ffb15 (patch) | |
| tree | d0e4365cae0ce401ba826809f4eef0bd755f4f2d /drivers/ieee1394/ieee1394_transactions.c | |
| parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 (diff) | |
| download | linux-dev-18963caaf55240d6a0491bdb27b7fef2882ffb15.tar.xz linux-dev-18963caaf55240d6a0491bdb27b7fef2882ffb15.zip | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'drivers/ieee1394/ieee1394_transactions.c')
| -rw-r--r-- | drivers/ieee1394/ieee1394_transactions.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/ieee1394/ieee1394_transactions.c b/drivers/ieee1394/ieee1394_transactions.c index 10c3d9f8c038..675b3135d5f1 100644 --- a/drivers/ieee1394/ieee1394_transactions.c +++ b/drivers/ieee1394/ieee1394_transactions.c @@ -501,8 +501,6 @@ int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation, if (length == 0) return -EINVAL; - BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet - packet = hpsb_make_readpacket(host, node, addr, length); if (!packet) { @@ -550,8 +548,6 @@ int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation, if (length == 0) return -EINVAL; - BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet - packet = hpsb_make_writepacket(host, node, addr, buffer, length); if (!packet) @@ -570,3 +566,30 @@ int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation, return retval; } + +int hpsb_lock(struct hpsb_host *host, nodeid_t node, unsigned int generation, + u64 addr, int extcode, quadlet_t *data, quadlet_t arg) +{ + struct hpsb_packet *packet; + int retval = 0; + + packet = hpsb_make_lockpacket(host, node, addr, extcode, data, arg); + if (!packet) + return -ENOMEM; + + packet->generation = generation; + retval = hpsb_send_packet_and_wait(packet); + if (retval < 0) + goto hpsb_lock_fail; + + retval = hpsb_packet_success(packet); + + if (retval == 0) + *data = packet->data[0]; + +hpsb_lock_fail: + hpsb_free_tlabel(packet); + hpsb_free_packet(packet); + + return retval; +} |