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* [PATCH] USB: trancevibrator: fix control-request direction
@ 2021-05-21 13:31 Johan Hovold
  2021-05-21 18:07 ` Greg Kroah-Hartman
  0 siblings, 1 reply; 3+ messages in thread
From: Johan Hovold @ 2021-05-21 13:31 UTC (permalink / raw)
  To: Greg Kroah-Hartman; +Cc: linux-usb, linux-kernel, Johan Hovold, stable

The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.

Fix the set-speed request which erroneously used USB_DIR_IN and update
the default timeout argument to match (same value).

Fixes: 5638e4d92e77 ("USB: add PlayStation 2 Trance Vibrator driver")
Cc: stable@vger.kernel.org      # 2.6.19
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/usb/misc/trancevibrator.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c
index a3dfc77578ea..26baba3ab7d7 100644
--- a/drivers/usb/misc/trancevibrator.c
+++ b/drivers/usb/misc/trancevibrator.c
@@ -61,9 +61,9 @@ static ssize_t speed_store(struct device *dev, struct device_attribute *attr,
 	/* Set speed */
 	retval = usb_control_msg(tv->udev, usb_sndctrlpipe(tv->udev, 0),
 				 0x01, /* vendor request: set speed */
-				 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+				 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 				 tv->speed, /* speed value */
-				 0, NULL, 0, USB_CTRL_GET_TIMEOUT);
+				 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 	if (retval) {
 		tv->speed = old;
 		dev_dbg(&tv->udev->dev, "retval = %d\n", retval);
-- 
2.26.3


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] USB: trancevibrator: fix control-request direction
  2021-05-21 13:31 [PATCH] USB: trancevibrator: fix control-request direction Johan Hovold
@ 2021-05-21 18:07 ` Greg Kroah-Hartman
  2021-05-24 11:20   ` Johan Hovold
  0 siblings, 1 reply; 3+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-21 18:07 UTC (permalink / raw)
  To: Johan Hovold; +Cc: linux-usb, linux-kernel, stable

On Fri, May 21, 2021 at 03:31:09PM +0200, Johan Hovold wrote:
> The direction of the pipe argument must match the request-type direction
> bit or control requests may fail depending on the host-controller-driver
> implementation.
> 
> Fix the set-speed request which erroneously used USB_DIR_IN and update
> the default timeout argument to match (same value).
> 
> Fixes: 5638e4d92e77 ("USB: add PlayStation 2 Trance Vibrator driver")
> Cc: stable@vger.kernel.org      # 2.6.19
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---
>  drivers/usb/misc/trancevibrator.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c
> index a3dfc77578ea..26baba3ab7d7 100644
> --- a/drivers/usb/misc/trancevibrator.c
> +++ b/drivers/usb/misc/trancevibrator.c
> @@ -61,9 +61,9 @@ static ssize_t speed_store(struct device *dev, struct device_attribute *attr,
>  	/* Set speed */
>  	retval = usb_control_msg(tv->udev, usb_sndctrlpipe(tv->udev, 0),
>  				 0x01, /* vendor request: set speed */
> -				 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> +				 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
>  				 tv->speed, /* speed value */
> -				 0, NULL, 0, USB_CTRL_GET_TIMEOUT);
> +				 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
>  	if (retval) {
>  		tv->speed = old;
>  		dev_dbg(&tv->udev->dev, "retval = %d\n", retval);
> -- 
> 2.26.3
> 

Thanks for searching the whole tree for these mistakes, nice work!

greg k-h

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] USB: trancevibrator: fix control-request direction
  2021-05-21 18:07 ` Greg Kroah-Hartman
@ 2021-05-24 11:20   ` Johan Hovold
  0 siblings, 0 replies; 3+ messages in thread
From: Johan Hovold @ 2021-05-24 11:20 UTC (permalink / raw)
  To: Greg Kroah-Hartman; +Cc: linux-usb, linux-kernel, stable

On Fri, May 21, 2021 at 08:07:44PM +0200, Greg Kroah-Hartman wrote:
> On Fri, May 21, 2021 at 03:31:09PM +0200, Johan Hovold wrote:
> > The direction of the pipe argument must match the request-type direction
> > bit or control requests may fail depending on the host-controller-driver
> > implementation.
> > 
> > Fix the set-speed request which erroneously used USB_DIR_IN and update
> > the default timeout argument to match (same value).
> > 
> > Fixes: 5638e4d92e77 ("USB: add PlayStation 2 Trance Vibrator driver")
> > Cc: stable@vger.kernel.org      # 2.6.19
> > Signed-off-by: Johan Hovold <johan@kernel.org>
> > ---
> >  drivers/usb/misc/trancevibrator.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c
> > index a3dfc77578ea..26baba3ab7d7 100644
> > --- a/drivers/usb/misc/trancevibrator.c
> > +++ b/drivers/usb/misc/trancevibrator.c
> > @@ -61,9 +61,9 @@ static ssize_t speed_store(struct device *dev, struct device_attribute *attr,
> >  	/* Set speed */
> >  	retval = usb_control_msg(tv->udev, usb_sndctrlpipe(tv->udev, 0),
> >  				 0x01, /* vendor request: set speed */
> > -				 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> > +				 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> >  				 tv->speed, /* speed value */
> > -				 0, NULL, 0, USB_CTRL_GET_TIMEOUT);
> > +				 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
> >  	if (retval) {
> >  		tv->speed = old;
> >  		dev_dbg(&tv->udev->dev, "retval = %d\n", retval);
> > -- 
> > 2.26.3
> > 
> 
> Thanks for searching the whole tree for these mistakes, nice work!

Thanks, but I only did a first quick scan of the more obvious mismatches
when the USB_DIR macros was being used.

I found a few more when grepping for harcoded request types but that
still won't catch drivers that use defines for the type and other even
harder to detect variants.

Syzbot already found a couple more but it usually doesn't check anything
beyond the probe function.

Johan

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-05-24 11:20 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-05-21 13:31 [PATCH] USB: trancevibrator: fix control-request direction Johan Hovold
2021-05-21 18:07 ` Greg Kroah-Hartman
2021-05-24 11:20   ` Johan Hovold

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