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staging: unisys: uislib: uislib.c: sparse warning of context imbalance

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fixed sparse warning : context imbalance in 'resume_device'
                        unexpected unlock
this patch will generate warning from checkpatch for
lines over 80 character , but since those are user-visible strings
so it was not modified.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Acked-by: Benjamin Romer <benjamin.romer@unisys.com>
Tested-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudip Mukherjee 2014-09-09 16:11:09 +05:30 committed by Greg Kroah-Hartman
parent 15ef0cc124
commit 4f01952d23
1 changed files with 39 additions and 42 deletions
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81
drivers/staging/unisys/uislib/uislib.c
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@ -616,6 +616,7 @@ resume_device(CONTROLVM_MESSAGE *msg)
struct bus_info *bus;
struct device_info *dev;
struct guest_msgs cmd;
int retval = CONTROLVM_RESP_SUCCESS;
busNo = msg->cmd.deviceChangeState.busNo;
devNo = msg->cmd.deviceChangeState.devNo;
@ -627,45 +628,16 @@ resume_device(CONTROLVM_MESSAGE *msg)
if (devNo >= bus->deviceCount) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: device(%d) >= deviceCount(%d).",
devNo, bus->deviceCount);
read_unlock(&BusListLock);
return CONTROLVM_RESP_ERROR_DEVICE_INVALID;
}
/* make sure this device exists */
dev = bus->device[devNo];
if (!dev) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: device %d does not exist.",
devNo);
read_unlock(&BusListLock);
return CONTROLVM_RESP_ERROR_ALREADY_DONE;
}
read_unlock(&BusListLock);
/* the msg is bound for virtpci; send
* guest_msgs struct to callback
*/
if (!uuid_le_cmp(dev->channelTypeGuid,
UltraVhbaChannelProtocolGuid)) {
cmd.msgtype = GUEST_RESUME_VHBA;
cmd.resume_vhba.chanptr = dev->chanptr;
} else
if (!uuid_le_cmp(dev->channelTypeGuid,
UltraVnicChannelProtocolGuid)) {
cmd.msgtype = GUEST_RESUME_VNIC;
cmd.resume_vnic.chanptr = dev->chanptr;
retval = CONTROLVM_RESP_ERROR_DEVICE_INVALID;
} else {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: unknown channelTypeGuid.\n");
return
CONTROLVM_RESP_ERROR_CHANNEL_TYPE_UNKNOWN;
}
if (!VirtControlChanFunc) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE Failed: virtpci callback not registered.");
return
CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
}
if (!VirtControlChanFunc(&cmd)) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: virtpci GUEST_RESUME_[VHBA||VNIC] returned error.");
return CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_CALLBACK_ERROR;
/* make sure this device exists */
dev = bus->device[devNo];
if (!dev) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: device %d does not exist.",
devNo);
retval =
CONTROLVM_RESP_ERROR_ALREADY_DONE;
}
}
break;
}
@ -674,11 +646,36 @@ resume_device(CONTROLVM_MESSAGE *msg)
if (!bus) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: bus %d does not exist",
busNo);
read_unlock(&BusListLock);
return CONTROLVM_RESP_ERROR_BUS_INVALID;
retval = CONTROLVM_RESP_ERROR_BUS_INVALID;
}
return CONTROLVM_RESP_SUCCESS;
read_unlock(&BusListLock);
/* the msg is bound for virtpci; send
* guest_msgs struct to callback
*/
if (retval == CONTROLVM_RESP_SUCCESS) {
if (!uuid_le_cmp(dev->channelTypeGuid,
UltraVhbaChannelProtocolGuid)) {
cmd.msgtype = GUEST_RESUME_VHBA;
cmd.resume_vhba.chanptr = dev->chanptr;
} else if (!uuid_le_cmp(dev->channelTypeGuid,
UltraVnicChannelProtocolGuid)) {
cmd.msgtype = GUEST_RESUME_VNIC;
cmd.resume_vnic.chanptr = dev->chanptr;
} else {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: unknown channelTypeGuid.\n");
return CONTROLVM_RESP_ERROR_CHANNEL_TYPE_UNKNOWN;
}
if (!VirtControlChanFunc) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE Failed: virtpci callback not registered.");
return CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
}
if (!VirtControlChanFunc(&cmd)) {
LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: virtpci GUEST_RESUME_[VHBA||VNIC] returned error.");
return
CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_CALLBACK_ERROR;
}
}
return retval;
}
static int