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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-07-25 01:48:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:43 -0700
commit909d145f0decbc4f17955e1fc4122a669a51fbc0 (patch)
treefbda85c9ecb7e75684e94ef5a070ffcaf7a6ccde
parent47be36a24defbd19aea1354c416ec99f291c7ab8 (diff)
downloadlinux-909d145f0decbc4f17955e1fc4122a669a51fbc0.tar.gz
mwave: ioctl BKL pushdown
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>
-rw-r--r--drivers/char/mwave/mwavedd.c39
1 files changed, 28 insertions, 11 deletions
diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 50243fcd87e..4f8d67fed29 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -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
};