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Commit 909d145f authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
Browse files

mwave: ioctl BKL pushdown 



Push the BKL down to the point it wraps the actual mwave method handlers

Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Cc: Eric Sesterhenn <snakebyte@gmx.de>
Cc: Yani Ioannou <yani.ioannou@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 47be36a2

drivers/char/mwave/mwavedd.c

+28 −11
Original line number Diff line number Diff line
@@ -86,8 +86,8 @@ module_param(mwave_uart_io, int, 0); 


static int mwave_open(struct inode *inode, struct file *file);

static int mwave_close(struct inode *inode, struct file *file);

static int mwave_ioctl(struct inode *inode, struct file *filp,

                       unsigned int iocmd, unsigned long ioarg);

static long mwave_ioctl(struct file *filp, unsigned int iocmd,

							unsigned long ioarg);



MWAVE_DEVICE_DATA mwave_s_mdd;
@@ -119,16 +119,16 @@ static int mwave_close(struct inode *inode, struct file *file) 
	return retval;

}



static int mwave_ioctl(struct inode *inode, struct file *file,

                       unsigned int iocmd, unsigned long ioarg)

static long mwave_ioctl(struct file *file, unsigned int iocmd,

							unsigned long ioarg)

{

	unsigned int retval = 0;

	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;

	void __user *arg = (void __user *)ioarg;



	PRINTK_5(TRACE_MWAVE,

		"mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n",

		 inode,  file, iocmd, (int) ioarg);

	PRINTK_4(TRACE_MWAVE,

		"mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",

		file, iocmd, (int) ioarg);



	switch (iocmd) {
@@ -136,7 +136,9 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
			PRINTK_1(TRACE_MWAVE,

				"mwavedd::mwave_ioctl, IOCTL_MW_RESET"

				" calling tp3780I_ResetDSP\n");

			lock_kernel();

			retval = tp3780I_ResetDSP(&pDrvData->rBDData);

			unlock_kernel();

			PRINTK_2(TRACE_MWAVE,

				"mwavedd::mwave_ioctl, IOCTL_MW_RESET"

				" retval %x from tp3780I_ResetDSP\n",
@@ -147,7 +149,9 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
			PRINTK_1(TRACE_MWAVE,

				"mwavedd::mwave_ioctl, IOCTL_MW_RUN"

				" calling tp3780I_StartDSP\n");

			lock_kernel();

			retval = tp3780I_StartDSP(&pDrvData->rBDData);

			unlock_kernel();

			PRINTK_2(TRACE_MWAVE,

				"mwavedd::mwave_ioctl, IOCTL_MW_RUN"

				" retval %x from tp3780I_StartDSP\n",
@@ -161,8 +165,10 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
				"mwavedd::mwave_ioctl,"

				" IOCTL_MW_DSP_ABILITIES calling"

				" tp3780I_QueryAbilities\n");

			lock_kernel();

			retval = tp3780I_QueryAbilities(&pDrvData->rBDData,

					&rAbilities);

			unlock_kernel();

			PRINTK_2(TRACE_MWAVE,

				"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"

				" retval %x from tp3780I_QueryAbilities\n",
@@ -193,11 +199,13 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
				"mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"

				" size %lx, ioarg %lx pusBuffer %p\n",

				rReadData.ulDataLength, ioarg, pusBuffer);

			lock_kernel();

			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,

					iocmd,

					pusBuffer,

					rReadData.ulDataLength,

					rReadData.usDspAddress);

			unlock_kernel();

		}

			break;
@@ -215,10 +223,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
				" size %lx, ioarg %lx pusBuffer %p\n",

				rReadData.ulDataLength / 2, ioarg,

				pusBuffer);

			lock_kernel();

			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,

				iocmd, pusBuffer,

				rReadData.ulDataLength / 2,

				rReadData.usDspAddress);

			unlock_kernel();

		}

			break;
@@ -236,10 +246,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
				" size %lx, ioarg %lx pusBuffer %p\n",

				rWriteData.ulDataLength, ioarg,

				pusBuffer);

			lock_kernel();

			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,

					iocmd, pusBuffer,

					rWriteData.ulDataLength,

					rWriteData.usDspAddress);

			unlock_kernel();

		}

			break;
@@ -257,10 +269,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
				" size %lx, ioarg %lx pusBuffer %p\n",

				rWriteData.ulDataLength, ioarg,

				pusBuffer);

			lock_kernel();

			retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,

					iocmd, pusBuffer,

					rWriteData.ulDataLength,

					rWriteData.usDspAddress);

			unlock_kernel();

		}

			break;
@@ -281,8 +295,10 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
						ipcnum);

				return -EINVAL;

			}

			lock_kernel();

			pDrvData->IPCs[ipcnum].bIsHere = FALSE;

			pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;

			unlock_kernel();

	

			PRINTK_2(TRACE_MWAVE,

				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
@@ -307,6 +323,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
				return -EINVAL;

			}

	

			lock_kernel();

			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {

				DECLARE_WAITQUEUE(wait, current);
@@ -347,6 +364,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
					" processing\n",

					ipcnum);

			}

			unlock_kernel();

		}

			break;
@@ -365,19 +383,18 @@ static int mwave_ioctl(struct inode *inode, struct file *file, 
						ipcnum);

				return -EINVAL;

			}

			lock_kernel();

			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {

				pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;

				if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {

					wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);

				}

			}

			unlock_kernel();

		}

			break;

	

		default:

			PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl:"

					" Error: Unrecognized iocmd %x\n",

					iocmd);

			return -ENOTTY;

			break;

	} /* switch */
@@ -460,7 +477,7 @@ static const struct file_operations mwave_fops = { 
	.owner		= THIS_MODULE,

	.read		= mwave_read,

	.write		= mwave_write,

	.ioctl		= mwave_ioctl,

	.unlocked_ioctl	= mwave_ioctl,

	.open		= mwave_open,

	.release	= mwave_close

};