diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2021-05-25 23:57:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-27 12:59:57 +0200 |
| commit | afc023da53e46b88552822f2fe035c7129c505a2 (patch) | |
| tree | 54f4ec9b4127acbdbe820164d7a6cb33af9309ab /drivers/staging/vc04_services | |
| parent | 7f8d698ffb17d7880af6316361f267a6921d218b (diff) | |
staging: mmal-vchiq: Fix incorrect static vchiq_instance.
For some reason lost in history function vchiq_mmal_init used
a static variable for storing the vchiq_instance.
This value is retrieved from vchiq per instance, so worked fine
until you try to call vchiq_mmal_init multiple times concurrently
when things then go wrong. This seemed to happen quite frequently
if using the cutdown firmware (no MMAL or VCSM services running)
as the vchiq_connect then failed, and one or other vchiq_shutdown
was working on an invalid handle.
Remove the static so that each caller gets a unique vchiq_instance.
Fixes: 7b3ad5abf027 ("staging: Import the BCM2835 MMAL-based V4L2 camera driver.")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1621979857-26754-1-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/vc04_services')
| -rw-r--r-- | drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c index 06bca7be5203..76d3f0399964 100644 --- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c +++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c @@ -1862,7 +1862,7 @@ int vchiq_mmal_init(struct vchiq_mmal_instance **out_instance) int status; int err = -ENODEV; struct vchiq_mmal_instance *instance; - static struct vchiq_instance *vchiq_instance; + struct vchiq_instance *vchiq_instance; struct vchiq_service_params_kernel params = { .version = VC_MMAL_VER, .version_min = VC_MMAL_MIN_VER, |