Push the BKL down into the driver ioctl methods
Signed-off-by: Alan Cox <alan@redhat.com>
diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c
index a69c652..bf7937c 100644
--- a/drivers/char/dsp56k.c
+++ b/drivers/char/dsp56k.c
@@ -33,10 +33,11 @@
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/device.h>
+#include <linux/smp_lock.h>
+#include <linux/uaccess.h> /* For put_user and get_user */
#include <asm/atarihw.h>
#include <asm/traps.h>
-#include <asm/uaccess.h> /* For put_user and get_user */
#include <asm/dsp56k.h>
@@ -321,8 +322,8 @@ static ssize_t dsp56k_write(struct file *file, const char __user *buf, size_t co
}
}
-static int dsp56k_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long dsp56k_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int dev = iminor(inode) & 0x0f;
void __user *argp = (void __user *)arg;
@@ -349,8 +350,9 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
if (len > DSP56K_MAX_BINARY_LENGTH) {
return -EINVAL;
}
-
+ lock_kernel();
r = dsp56k_upload(bin, len);
+ unlock_kernel();
if (r < 0) {
return r;
}
@@ -360,12 +362,16 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
case DSP56K_SET_TX_WSIZE:
if (arg > 4 || arg < 1)
return -EINVAL;
+ lock_kernel();
dsp56k.tx_wsize = (int) arg;
+ unlock_kernel();
break;
case DSP56K_SET_RX_WSIZE:
if (arg > 4 || arg < 1)
return -EINVAL;
+ lock_kernel();
dsp56k.rx_wsize = (int) arg;
+ unlock_kernel();
break;
case DSP56K_HOST_FLAGS:
{
@@ -377,6 +383,7 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
if(get_user(out, &hf->out) < 0)
return -EFAULT;
+ lock_kernel();
if ((dir & 0x1) && (out & 0x1))
dsp56k_host_interface.icr |= DSP56K_ICR_HF0;
else if (dir & 0x1)
@@ -391,14 +398,16 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
if (dsp56k_host_interface.icr & DSP56K_ICR_HF1) status |= 0x2;
if (dsp56k_host_interface.isr & DSP56K_ISR_HF2) status |= 0x4;
if (dsp56k_host_interface.isr & DSP56K_ISR_HF3) status |= 0x8;
-
+ unlock_kernel();
return put_user(status, &hf->status);
}
case DSP56K_HOST_CMD:
if (arg > 31 || arg < 0)
return -EINVAL;
+ lock_kernel();
dsp56k_host_interface.cvr = (u_char)((arg & DSP56K_CVR_HV_MASK) |
DSP56K_CVR_HC);
+ unlock_kernel();
break;
default:
return -EINVAL;
@@ -485,7 +494,7 @@ static const struct file_operations dsp56k_fops = {
.owner = THIS_MODULE,
.read = dsp56k_read,
.write = dsp56k_write,
- .ioctl = dsp56k_ioctl,
+ .unlocked_ioctl = dsp56k_ioctl,
.open = dsp56k_open,
.release = dsp56k_release,
};
--
