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mwave: ioctl BKL pushdown

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

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Eric Sesterhenn <snakebyte@gmx.de>
Cc: Yani Ioannou <yani.ioannou@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-07-25 01:48:14 -07:00 • committed by Linus Torvalds
parent 47be36a24d
commit 909d145f0d
1 changed files with 28 additions and 11 deletions
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39
drivers/char/mwave/mwavedd.c
View file

@ -86,8 +86,8 @@ module_param(mwave_uart_io, int, 0);
static int mwave_open(struct inode *inode, struct file *file); static int mwave_open(struct inode *inode, struct file *file);
static int mwave_close(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, static long mwave_ioctl(struct file *filp, unsigned int iocmd,
unsigned int iocmd, unsigned long ioarg); unsigned long ioarg);
MWAVE_DEVICE_DATA mwave_s_mdd; MWAVE_DEVICE_DATA mwave_s_mdd;
@ -119,16 +119,16 @@ static int mwave_close(struct inode *inode, struct file *file)
return retval; return retval;
} }
static int mwave_ioctl(struct inode *inode, struct file *file, static long mwave_ioctl(struct file *file, unsigned int iocmd,
unsigned int iocmd, unsigned long ioarg) unsigned long ioarg)
{ {
unsigned int retval = 0; unsigned int retval = 0;
pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd; pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
void __user *arg = (void __user *)ioarg; void __user *arg = (void __user *)ioarg;
PRINTK_5(TRACE_MWAVE, PRINTK_4(TRACE_MWAVE,
"mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n", "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
inode, file, iocmd, (int) ioarg); file, iocmd, (int) ioarg);
switch (iocmd) { switch (iocmd) {
@ -136,7 +136,9 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
PRINTK_1(TRACE_MWAVE, PRINTK_1(TRACE_MWAVE,
"mwavedd::mwave_ioctl, IOCTL_MW_RESET" "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
" calling tp3780I_ResetDSP\n"); " calling tp3780I_ResetDSP\n");
lock_kernel();
retval = tp3780I_ResetDSP(&pDrvData->rBDData); retval = tp3780I_ResetDSP(&pDrvData->rBDData);
unlock_kernel();
PRINTK_2(TRACE_MWAVE, PRINTK_2(TRACE_MWAVE,
"mwavedd::mwave_ioctl, IOCTL_MW_RESET" "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
" retval %x from tp3780I_ResetDSP\n", " retval %x from tp3780I_ResetDSP\n",
@ -147,7 +149,9 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
PRINTK_1(TRACE_MWAVE, PRINTK_1(TRACE_MWAVE,
"mwavedd::mwave_ioctl, IOCTL_MW_RUN" "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
" calling tp3780I_StartDSP\n"); " calling tp3780I_StartDSP\n");
lock_kernel();
retval = tp3780I_StartDSP(&pDrvData->rBDData); retval = tp3780I_StartDSP(&pDrvData->rBDData);
unlock_kernel();
PRINTK_2(TRACE_MWAVE, PRINTK_2(TRACE_MWAVE,
"mwavedd::mwave_ioctl, IOCTL_MW_RUN" "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
" retval %x from tp3780I_StartDSP\n", " retval %x from tp3780I_StartDSP\n",
@ -161,8 +165,10 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
"mwavedd::mwave_ioctl," "mwavedd::mwave_ioctl,"
" IOCTL_MW_DSP_ABILITIES calling" " IOCTL_MW_DSP_ABILITIES calling"
" tp3780I_QueryAbilities\n"); " tp3780I_QueryAbilities\n");
lock_kernel();
retval = tp3780I_QueryAbilities(&pDrvData->rBDData, retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
&rAbilities); &rAbilities);
unlock_kernel();
PRINTK_2(TRACE_MWAVE, PRINTK_2(TRACE_MWAVE,
"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES" "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
" retval %x from tp3780I_QueryAbilities\n", " 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," "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
" size %lx, ioarg %lx pusBuffer %p\n", " size %lx, ioarg %lx pusBuffer %p\n",
rReadData.ulDataLength, ioarg, pusBuffer); rReadData.ulDataLength, ioarg, pusBuffer);
lock_kernel();
retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
iocmd, iocmd,
pusBuffer, pusBuffer,
rReadData.ulDataLength, rReadData.ulDataLength,
rReadData.usDspAddress); rReadData.usDspAddress);
unlock_kernel();
} }
break; break;
@ -215,10 +223,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
" size %lx, ioarg %lx pusBuffer %p\n", " size %lx, ioarg %lx pusBuffer %p\n",
rReadData.ulDataLength / 2, ioarg, rReadData.ulDataLength / 2, ioarg,
pusBuffer); pusBuffer);
lock_kernel();
retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
iocmd, pusBuffer, iocmd, pusBuffer,
rReadData.ulDataLength / 2, rReadData.ulDataLength / 2,
rReadData.usDspAddress); rReadData.usDspAddress);
unlock_kernel();
} }
break; break;
@ -236,10 +246,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
" size %lx, ioarg %lx pusBuffer %p\n", " size %lx, ioarg %lx pusBuffer %p\n",
rWriteData.ulDataLength, ioarg, rWriteData.ulDataLength, ioarg,
pusBuffer); pusBuffer);
lock_kernel();
retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
iocmd, pusBuffer, iocmd, pusBuffer,
rWriteData.ulDataLength, rWriteData.ulDataLength,
rWriteData.usDspAddress); rWriteData.usDspAddress);
unlock_kernel();
} }
break; break;
@ -257,10 +269,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
" size %lx, ioarg %lx pusBuffer %p\n", " size %lx, ioarg %lx pusBuffer %p\n",
rWriteData.ulDataLength, ioarg, rWriteData.ulDataLength, ioarg,
pusBuffer); pusBuffer);
lock_kernel();
retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData, retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
iocmd, pusBuffer, iocmd, pusBuffer,
rWriteData.ulDataLength, rWriteData.ulDataLength,
rWriteData.usDspAddress); rWriteData.usDspAddress);
unlock_kernel();
} }
break; break;
@ -281,8 +295,10 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
ipcnum); ipcnum);
return -EINVAL; return -EINVAL;
} }
lock_kernel();
pDrvData->IPCs[ipcnum].bIsHere = FALSE; pDrvData->IPCs[ipcnum].bIsHere = FALSE;
pDrvData->IPCs[ipcnum].bIsEnabled = TRUE; pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
unlock_kernel();
PRINTK_2(TRACE_MWAVE, PRINTK_2(TRACE_MWAVE,
"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC" "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
@ -307,6 +323,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
return -EINVAL; return -EINVAL;
} }
lock_kernel();
if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
DECLARE_WAITQUEUE(wait, current); DECLARE_WAITQUEUE(wait, current);
@ -347,6 +364,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
" processing\n", " processing\n",
ipcnum); ipcnum);
} }
unlock_kernel();
} }
break; break;
@ -365,19 +383,18 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
ipcnum); ipcnum);
return -EINVAL; return -EINVAL;
} }
lock_kernel();
if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
pDrvData->IPCs[ipcnum].bIsEnabled = FALSE; pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) { if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue); wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
} }
} }
unlock_kernel();
} }
break; break;
default: default:
PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl:"
" Error: Unrecognized iocmd %x\n",
iocmd);
return -ENOTTY; return -ENOTTY;
break; break;
} /* switch */ } /* switch */
@ -460,7 +477,7 @@ static const struct file_operations mwave_fops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.read = mwave_read, .read = mwave_read,
.write = mwave_write, .write = mwave_write,
.ioctl = mwave_ioctl, .unlocked_ioctl = mwave_ioctl,
.open = mwave_open, .open = mwave_open,
.release = mwave_close .release = mwave_close
}; };