diff options
author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-07-04 11:29:31 +0400 |
---|---|---|
committer | Jens Axboe <jens.axboe@oracle.com> | 2008-07-04 11:52:13 +0400 |
commit | 2610324fcacf38a24b630090ebcb802538763187 (patch) | |
tree | 29dbc9a0dac389c7f0ea011377885dc32e55facd /drivers | |
parent | 5b6155ee70e9c4d2ad7e6f514c8eee06e2711c3a (diff) | |
download | linux-2610324fcacf38a24b630090ebcb802538763187.tar.xz |
DAC960: push down BKL
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/block/DAC960.c | 157 |
1 files changed, 101 insertions, 56 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c index cd03473f3547..a002a381df92 100644 --- a/drivers/block/DAC960.c +++ b/drivers/block/DAC960.c @@ -6628,15 +6628,18 @@ static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller) * DAC960_gam_ioctl is the ioctl function for performing RAID operations. */ -static int DAC960_gam_ioctl(struct inode *inode, struct file *file, - unsigned int Request, unsigned long Argument) +static long DAC960_gam_ioctl(struct file *file, unsigned int Request, + unsigned long Argument) { - int ErrorCode = 0; + long ErrorCode = 0; if (!capable(CAP_SYS_ADMIN)) return -EACCES; + + lock_kernel(); switch (Request) { case DAC960_IOCTL_GET_CONTROLLER_COUNT: - return DAC960_ControllerCount; + ErrorCode = DAC960_ControllerCount; + break; case DAC960_IOCTL_GET_CONTROLLER_INFO: { DAC960_ControllerInfo_T __user *UserSpaceControllerInfo = @@ -6644,15 +6647,20 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, DAC960_ControllerInfo_T ControllerInfo; DAC960_Controller_T *Controller; int ControllerNumber; - if (UserSpaceControllerInfo == NULL) return -EINVAL; - ErrorCode = get_user(ControllerNumber, + if (UserSpaceControllerInfo == NULL) + ErrorCode = -EINVAL; + else ErrorCode = get_user(ControllerNumber, &UserSpaceControllerInfo->ControllerNumber); - if (ErrorCode != 0) return ErrorCode; + if (ErrorCode != 0) + break;; + ErrorCode = -ENXIO; if (ControllerNumber < 0 || - ControllerNumber > DAC960_ControllerCount - 1) - return -ENXIO; + ControllerNumber > DAC960_ControllerCount - 1) { + break; + } Controller = DAC960_Controllers[ControllerNumber]; - if (Controller == NULL) return -ENXIO; + if (Controller == NULL) + break;; memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T)); ControllerInfo.ControllerNumber = ControllerNumber; ControllerInfo.FirmwareType = Controller->FirmwareType; @@ -6665,8 +6673,9 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, ControllerInfo.PCI_Address = Controller->PCI_Address; strcpy(ControllerInfo.ModelName, Controller->ModelName); strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion); - return (copy_to_user(UserSpaceControllerInfo, &ControllerInfo, + ErrorCode = (copy_to_user(UserSpaceControllerInfo, &ControllerInfo, sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0); + break; } case DAC960_IOCTL_V1_EXECUTE_COMMAND: { @@ -6684,30 +6693,39 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, int ControllerNumber, DataTransferLength; unsigned char *DataTransferBuffer = NULL; dma_addr_t DataTransferBufferDMA; - if (UserSpaceUserCommand == NULL) return -EINVAL; + if (UserSpaceUserCommand == NULL) { + ErrorCode = -EINVAL; + break; + } if (copy_from_user(&UserCommand, UserSpaceUserCommand, sizeof(DAC960_V1_UserCommand_T))) { ErrorCode = -EFAULT; - goto Failure1a; + break; } ControllerNumber = UserCommand.ControllerNumber; + ErrorCode = -ENXIO; if (ControllerNumber < 0 || ControllerNumber > DAC960_ControllerCount - 1) - return -ENXIO; + break; Controller = DAC960_Controllers[ControllerNumber]; - if (Controller == NULL) return -ENXIO; - if (Controller->FirmwareType != DAC960_V1_Controller) return -EINVAL; + if (Controller == NULL) + break; + ErrorCode = -EINVAL; + if (Controller->FirmwareType != DAC960_V1_Controller) + break; CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode; DataTransferLength = UserCommand.DataTransferLength; - if (CommandOpcode & 0x80) return -EINVAL; + if (CommandOpcode & 0x80) + break; if (CommandOpcode == DAC960_V1_DCDB) { if (copy_from_user(&DCDB, UserCommand.DCDB, sizeof(DAC960_V1_DCDB_T))) { ErrorCode = -EFAULT; - goto Failure1a; + break; } - if (DCDB.Channel >= DAC960_V1_MaxChannels) return -EINVAL; + if (DCDB.Channel >= DAC960_V1_MaxChannels) + break; if (!((DataTransferLength == 0 && DCDB.Direction == DAC960_V1_DCDB_NoDataTransfer) || @@ -6717,38 +6735,37 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, (DataTransferLength < 0 && DCDB.Direction == DAC960_V1_DCDB_DataTransferSystemToDevice))) - return -EINVAL; + break; if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength) != abs(DataTransferLength)) - return -EINVAL; + break; DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA); - if (DCDB_IOBUF == NULL) - return -ENOMEM; + if (DCDB_IOBUF == NULL) { + ErrorCode = -ENOMEM; + break; + } } + ErrorCode = -ENOMEM; if (DataTransferLength > 0) { DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice, DataTransferLength, &DataTransferBufferDMA); - if (DataTransferBuffer == NULL) { - ErrorCode = -ENOMEM; - goto Failure1; - } + if (DataTransferBuffer == NULL) + break; memset(DataTransferBuffer, 0, DataTransferLength); } else if (DataTransferLength < 0) { DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice, -DataTransferLength, &DataTransferBufferDMA); - if (DataTransferBuffer == NULL) { - ErrorCode = -ENOMEM; - goto Failure1; - } + if (DataTransferBuffer == NULL) + break; if (copy_from_user(DataTransferBuffer, UserCommand.DataTransferBuffer, -DataTransferLength)) { ErrorCode = -EFAULT; - goto Failure1; + break; } } if (CommandOpcode == DAC960_V1_DCDB) @@ -6825,8 +6842,7 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, if (DCDB_IOBUF != NULL) pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T), DCDB_IOBUF, DCDB_IOBUFDMA); - Failure1a: - return ErrorCode; + break; } case DAC960_IOCTL_V2_EXECUTE_COMMAND: { @@ -6844,32 +6860,43 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, dma_addr_t DataTransferBufferDMA; unsigned char *RequestSenseBuffer = NULL; dma_addr_t RequestSenseBufferDMA; - if (UserSpaceUserCommand == NULL) return -EINVAL; + + ErrorCode = -EINVAL; + if (UserSpaceUserCommand == NULL) + break; if (copy_from_user(&UserCommand, UserSpaceUserCommand, sizeof(DAC960_V2_UserCommand_T))) { ErrorCode = -EFAULT; - goto Failure2a; + break; } + ErrorCode = -ENXIO; ControllerNumber = UserCommand.ControllerNumber; if (ControllerNumber < 0 || ControllerNumber > DAC960_ControllerCount - 1) - return -ENXIO; + break; Controller = DAC960_Controllers[ControllerNumber]; - if (Controller == NULL) return -ENXIO; - if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL; + if (Controller == NULL) + break; + if (Controller->FirmwareType != DAC960_V2_Controller){ + ErrorCode = -EINVAL; + break; + } DataTransferLength = UserCommand.DataTransferLength; + ErrorCode = -ENOMEM; if (DataTransferLength > 0) { DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice, DataTransferLength, &DataTransferBufferDMA); - if (DataTransferBuffer == NULL) return -ENOMEM; + if (DataTransferBuffer == NULL) + break; memset(DataTransferBuffer, 0, DataTransferLength); } else if (DataTransferLength < 0) { DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice, -DataTransferLength, &DataTransferBufferDMA); - if (DataTransferBuffer == NULL) return -ENOMEM; + if (DataTransferBuffer == NULL) + break; if (copy_from_user(DataTransferBuffer, UserCommand.DataTransferBuffer, -DataTransferLength)) { @@ -6979,8 +7006,7 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, if (RequestSenseBuffer != NULL) pci_free_consistent(Controller->PCIDevice, RequestSenseLength, RequestSenseBuffer, RequestSenseBufferDMA); - Failure2a: - return ErrorCode; + break; } case DAC960_IOCTL_V2_GET_HEALTH_STATUS: { @@ -6990,21 +7016,33 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer; DAC960_Controller_T *Controller; int ControllerNumber; - if (UserSpaceGetHealthStatus == NULL) return -EINVAL; + if (UserSpaceGetHealthStatus == NULL) { + ErrorCode = -EINVAL; + break; + } if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus, - sizeof(DAC960_V2_GetHealthStatus_T))) - return -EFAULT; + sizeof(DAC960_V2_GetHealthStatus_T))) { + ErrorCode = -EFAULT; + break; + } + ErrorCode = -ENXIO; ControllerNumber = GetHealthStatus.ControllerNumber; if (ControllerNumber < 0 || ControllerNumber > DAC960_ControllerCount - 1) - return -ENXIO; + break; Controller = DAC960_Controllers[ControllerNumber]; - if (Controller == NULL) return -ENXIO; - if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL; + if (Controller == NULL) + break; + if (Controller->FirmwareType != DAC960_V2_Controller) { + ErrorCode = -EINVAL; + break; + } if (copy_from_user(&HealthStatusBuffer, GetHealthStatus.HealthStatusBuffer, - sizeof(DAC960_V2_HealthStatusBuffer_T))) - return -EFAULT; + sizeof(DAC960_V2_HealthStatusBuffer_T))) { + ErrorCode = -EFAULT; + break; + } while (Controller->V2.HealthStatusBuffer->StatusChangeCounter == HealthStatusBuffer.StatusChangeCounter && Controller->V2.HealthStatusBuffer->NextEventSequenceNumber @@ -7012,21 +7050,28 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file, { interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue, DAC960_MonitoringTimerInterval); - if (signal_pending(current)) return -EINTR; + if (signal_pending(current)) { + ErrorCode = -EINTR; + break; + } } if (copy_to_user(GetHealthStatus.HealthStatusBuffer, Controller->V2.HealthStatusBuffer, sizeof(DAC960_V2_HealthStatusBuffer_T))) - return -EFAULT; - return 0; + ErrorCode = -EFAULT; + else + ErrorCode = 0; } + default: + ErrorCode = -ENOTTY; } - return -EINVAL; + unlock_kernel(); + return ErrorCode; } static const struct file_operations DAC960_gam_fops = { .owner = THIS_MODULE, - .ioctl = DAC960_gam_ioctl + .unlocked_ioctl = DAC960_gam_ioctl }; static struct miscdevice DAC960_gam_dev = { |