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usb: misc: usbtest: allocate size of urb array according to user parameter

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Allocate the size of urb pointer array according to testusb's
parameter sglen, and limits the length of sglen as MAX_SGLEN
(128 currently).

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Peter Chen 2015-09-01 09:47:58 +08:00 committed by Felipe Balbi
parent 95c8bc3609
commit 41d3c0b84d
1 changed files with 5 additions and 4 deletions
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9
drivers/usb/misc/usbtest.c
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@ -95,6 +95,7 @@ static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test)
dev_warn(&(tdev)->intf->dev , fmt , ## args)
#define GUARD_BYTE 0xA5
#define MAX_SGLEN 128
/*-------------------------------------------------------------------------*/
@ -1911,10 +1912,7 @@ test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
unsigned i;
unsigned long packets = 0;
int status = 0;
struct urb *urbs[10]; /* FIXME no limit */
if (param->sglen > 10)
return -EDOM;
struct urb *urbs[param->sglen];
memset(&context, 0, sizeof(context));
context.count = param->iterations * param->sglen;
@ -2061,6 +2059,9 @@ usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
if (param->iterations <= 0)
return -EINVAL;
if (param->sglen > MAX_SGLEN)
return -EINVAL;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;