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dsp56k: BKL pushdown

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Push the BKL down into the driver ioctl methods

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@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 01:48:17 -07:00 • committed by Linus Torvalds
parent b8e3591965
commit 236b8756a2
1 changed files with 14 additions and 6 deletions
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20
drivers/char/dsp56k.c
View file

@ -36,10 +36,10 @@
#include <linux/smp_lock.h> #include <linux/smp_lock.h>
#include <linux/firmware.h> #include <linux/firmware.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/uaccess.h> /* For put_user and get_user */
#include <asm/atarihw.h> #include <asm/atarihw.h>
#include <asm/traps.h> #include <asm/traps.h>
#include <asm/uaccess.h> /* For put_user and get_user */
#include <asm/dsp56k.h> #include <asm/dsp56k.h>
@ -303,8 +303,8 @@ 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, static long dsp56k_ioctl(struct file *file, unsigned int cmd,
unsigned int cmd, unsigned long arg) unsigned long arg)
{ {
int dev = iminor(inode) & 0x0f; int dev = iminor(inode) & 0x0f;
void __user *argp = (void __user *)arg; void __user *argp = (void __user *)arg;
@ -331,8 +331,9 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
if (len > DSP56K_MAX_BINARY_LENGTH) { if (len > DSP56K_MAX_BINARY_LENGTH) {
return -EINVAL; return -EINVAL;
} }
lock_kernel();
r = dsp56k_upload(bin, len); r = dsp56k_upload(bin, len);
unlock_kernel();
if (r < 0) { if (r < 0) {
return r; return r;
} }
@ -342,12 +343,16 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
case DSP56K_SET_TX_WSIZE: case DSP56K_SET_TX_WSIZE:
if (arg > 4 || arg < 1) if (arg > 4 || arg < 1)
return -EINVAL; return -EINVAL;
lock_kernel();
dsp56k.tx_wsize = (int) arg; dsp56k.tx_wsize = (int) arg;
unlock_kernel();
break; break;
case DSP56K_SET_RX_WSIZE: case DSP56K_SET_RX_WSIZE:
if (arg > 4 || arg < 1) if (arg > 4 || arg < 1)
return -EINVAL; return -EINVAL;
lock_kernel();
dsp56k.rx_wsize = (int) arg; dsp56k.rx_wsize = (int) arg;
unlock_kernel();
break; break;
case DSP56K_HOST_FLAGS: case DSP56K_HOST_FLAGS:
{ {
@ -359,6 +364,7 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
if(get_user(out, &hf->out) < 0) if(get_user(out, &hf->out) < 0)
return -EFAULT; return -EFAULT;
lock_kernel();
if ((dir & 0x1) && (out & 0x1)) if ((dir & 0x1) && (out & 0x1))
dsp56k_host_interface.icr |= DSP56K_ICR_HF0; dsp56k_host_interface.icr |= DSP56K_ICR_HF0;
else if (dir & 0x1) else if (dir & 0x1)
@ -373,14 +379,16 @@ static int dsp56k_ioctl(struct inode *inode, struct file *file,
if (dsp56k_host_interface.icr & DSP56K_ICR_HF1) status |= 0x2; if (dsp56k_host_interface.icr & DSP56K_ICR_HF1) status |= 0x2;
if (dsp56k_host_interface.isr & DSP56K_ISR_HF2) status |= 0x4; if (dsp56k_host_interface.isr & DSP56K_ISR_HF2) status |= 0x4;
if (dsp56k_host_interface.isr & DSP56K_ISR_HF3) status |= 0x8; if (dsp56k_host_interface.isr & DSP56K_ISR_HF3) status |= 0x8;
unlock_kernel();
return put_user(status, &hf->status); return put_user(status, &hf->status);
} }
case DSP56K_HOST_CMD: case DSP56K_HOST_CMD:
if (arg > 31 || arg < 0) if (arg > 31 || arg < 0)
return -EINVAL; return -EINVAL;
lock_kernel();
dsp56k_host_interface.cvr = (u_char)((arg & DSP56K_CVR_HV_MASK) | dsp56k_host_interface.cvr = (u_char)((arg & DSP56K_CVR_HV_MASK) |
DSP56K_CVR_HC); DSP56K_CVR_HC);
unlock_kernel();
break; break;
default: default:
return -EINVAL; return -EINVAL;
@ -472,7 +480,7 @@ static const struct file_operations dsp56k_fops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.read = dsp56k_read, .read = dsp56k_read,
.write = dsp56k_write, .write = dsp56k_write,
.ioctl = dsp56k_ioctl, .unlocked_ioctl = dsp56k_ioctl,
.open = dsp56k_open, .open = dsp56k_open,
.release = dsp56k_release, .release = dsp56k_release,
}; };