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authorAl Viro <viro@zeniv.linux.org.uk>2020-04-23 05:52:07 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-05-29 18:04:56 +0300
commit5f599098f7608deb4fa063486452f8f1dfd8a72c (patch)
tree1d106d0718b7b4024209918dcdb1556587d78b9b /drivers/char/pcmcia/cm4000_cs.c
parent558cc8f7822ba25711142f5e7718be857b286793 (diff)
downloadlinux-5f599098f7608deb4fa063486452f8f1dfd8a72c.tar.xz
cm4000_cs.c cmm_ioctl(): get rid of pointless access_ok()
copy_to_user()/copy_from_user() for everything Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/char/pcmcia/cm4000_cs.c')
-rw-r--r--drivers/char/pcmcia/cm4000_cs.c14
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index 4edb4174a1e2..89681f07bc78 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -1404,7 +1404,6 @@ static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
unsigned int iobase = dev->p_dev->resource[0]->start;
struct inode *inode = file_inode(filp);
struct pcmcia_device *link;
- int size;
int rc;
void __user *argp = (void __user *)arg;
#ifdef CM4000_DEBUG
@@ -1441,19 +1440,6 @@ static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
DEBUGP(4, dev, "iocnr mismatch\n");
goto out;
}
- size = _IOC_SIZE(cmd);
- rc = -EFAULT;
- DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
- _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
-
- if (_IOC_DIR(cmd) & _IOC_READ) {
- if (!access_ok(argp, size))
- goto out;
- }
- if (_IOC_DIR(cmd) & _IOC_WRITE) {
- if (!access_ok(argp, size))
- goto out;
- }
rc = 0;
switch (cmd) {