* [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 related [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)
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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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