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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-04-19 16:17:34 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-04-19 16:17:34 (GMT) |
| commit | cf816ecb533ab96b883dfdc0db174598b5b5c4d2 (patch) | |
| tree | 1b7705db288ae2917105e624b01fdf81e0882bf1 /drivers/firewire/fw-cdev.c | |
| parent | adf6d34e460387ee3e8f1e1875d52bff51212c7d (diff) | |
| parent | 15f7d677ccff6f0f5de8a1ee43a792567e9f9de9 (diff) | |
| download | linux-fsl-qoriq-cf816ecb533ab96b883dfdc0db174598b5b5c4d2.tar.xz | |
Merge branch 'merge-fixes' into devel
Diffstat (limited to 'drivers/firewire/fw-cdev.c')
| -rw-r--r-- | drivers/firewire/fw-cdev.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index 46bc197..4a54192 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -269,21 +269,28 @@ static int ioctl_get_info(struct client *client, void *buffer) { struct fw_cdev_get_info *get_info = buffer; struct fw_cdev_event_bus_reset bus_reset; + unsigned long ret = 0; client->version = get_info->version; get_info->version = FW_CDEV_VERSION; + down_read(&fw_device_rwsem); + if (get_info->rom != 0) { void __user *uptr = u64_to_uptr(get_info->rom); size_t want = get_info->rom_length; size_t have = client->device->config_rom_length * 4; - if (copy_to_user(uptr, client->device->config_rom, - min(want, have))) - return -EFAULT; + ret = copy_to_user(uptr, client->device->config_rom, + min(want, have)); } get_info->rom_length = client->device->config_rom_length * 4; + up_read(&fw_device_rwsem); + + if (ret != 0) + return -EFAULT; + client->bus_reset_closure = get_info->bus_reset_closure; if (get_info->bus_reset != 0) { void __user *uptr = u64_to_uptr(get_info->bus_reset); |