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Staging: rspiusb: duplicate code in pixis_io

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It seems that pixis_io and pixis_io2 should do the same thing.


Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Richard Genoud 2009-05-17 13:06:32 +02:00 committed by Greg Kroah-Hartman
parent c854b5e58f
commit 14e8bcd086
1 changed files with 8 additions and 51 deletions
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59
drivers/staging/rspiusb/rspiusb.c
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@ -252,38 +252,6 @@ static int pixis_io(struct ioctl_struct *ctrl, struct device_extension *pdx,
return ctrl->numbytes;
}
static int pixis_io2(struct ioctl_struct *ctrl, struct device_extension *pdx,
struct ioctl_struct *arg)
{
unsigned char *uBuf;
int numbytes;
int i;
uBuf = kmalloc(ctrl->numbytes, GFP_KERNEL);
if (!uBuf) {
dbg("Alloc for uBuf failed");
return 0;
}
numbytes = (int) ctrl->numbytes;
/* dbg( "numbytes to read = %d", numbytes ); */
if (copy_from_user(uBuf, ctrl->pData, numbytes))
dbg("copying ctrl->pData to dummyBuf failed");
i = usb_bulk_msg(pdx->udev, pdx->hEP[ctrl->endpoint],
uBuf, numbytes, &numbytes, HZ * 10);
if (i) {
dbg("Blocking ReadI/O Failed with status %d", i);
kfree(uBuf);
return -1;
}
ctrl->numbytes = numbytes;
memcpy(ctrl->pData, uBuf, numbytes);
if (copy_to_user(arg, ctrl, sizeof(struct ioctl_struct)))
dbg("copy_to_user failed in IORB");
kfree(uBuf);
return ctrl->numbytes;
}
static int pixel_data(struct ioctl_struct *ctrl, struct device_extension *pdx)
{
int i;
@ -398,27 +366,16 @@ static int piusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
sizeof(struct ioctl_struct)))
dev_err(&pdx->udev->dev, "copy_from_user failed\n");
switch (ctrl.endpoint) {
case 0: /* ST133 Pixel Data or PIXIS IO */
if (pdx->iama == PIXIS_PID) {
return pixis_io(&ctrl, pdx,
(struct ioctl_struct *)arg);
}
/* ST133 Pixel Data */
/* fall through */
case 2: /* PIXIS Ping */
/* fall through */
case 3: /* PIXIS Pong */
if (((0 == ctrl.endpoint) && (PIXIS_PID == pdx->iama)) ||
(1 == ctrl.endpoint) || /* ST133IO */
(4 == ctrl.endpoint)) /* PIXIS IO */
return pixis_io(&ctrl, pdx,
(struct ioctl_struct *)arg);
else if ((0 == ctrl.endpoint) || /* ST133 Pixel Data */
(2 == ctrl.endpoint) || /* PIXIS Ping */
(3 == ctrl.endpoint)) /* PIXIS Pong */
return pixel_data(&ctrl, pdx);
case 1: /* ST133IO */
/* fall through */
case 4: /* PIXIS IO */
return pixis_io2(&ctrl, pdx,
(struct ioctl_struct *)arg);
default:
break;
}
break;
case PIUSB_WHATCAMERA: