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| author | JiSheng Zhang <jszhang3@mail.ustc.edu.cn> | 2008-07-19 15:35:41 +0800 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-07-20 15:25:03 +0200 |
| commit | f9543d0ab6392a9a5bff0034622688dc10d9d225 (patch) | |
| tree | 44587aa693b3fe444cab25aaad2c6c5e95f5f4ee /drivers/firewire | |
| parent | 1e8afea124added6409d5209f90d9949f5a13b32 (diff) | |
| download | linux-f9543d0ab6392a9a5bff0034622688dc10d9d225.tar.bz2 | |
firewire: queue the right number of data
There will be 4 padding bytes in struct fw_cdev_event_response on some platforms
The member:__u32 data will point to these padding bytes. While queue the
response and data in complete_transaction in fw-cdev.c, it will queue like this:
|response(excluding padding bytes)|4 padding bytes|4 padding bytes|data.
It queue 4 extra bytes. That is to say it use "&response + sizeof(response)"
while other place of kernel and userspace library use "&response + offsetof
(typeof(response), data)". So it will lost the last 4 bytes of data. This patch
can fix it while not changing the struct definition.
Signed-off-by: JiSheng Zhang <jszhang3@mail.ustc.edu.cn>
This fixes responses to outbound block read requests on 64bit architectures.
Tested on i686, x86-64, and x86-64 with i686 userland, using firecontrol and
gscanbus.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/fw-cdev.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index c639915fc3cb..bc81d6fcd2fd 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -382,9 +382,9 @@ complete_transaction(struct fw_card *card, int rcode, response->response.type = FW_CDEV_EVENT_RESPONSE; response->response.rcode = rcode; - queue_event(client, &response->event, - &response->response, sizeof(response->response), - response->response.data, response->response.length); + queue_event(client, &response->event, &response->response, + sizeof(response->response) + response->response.length, + NULL, 0); } static int ioctl_send_request(struct client *client, void *buffer) |