mirror of https://gitee.com/openkylin/linux.git
980d4f1734
This patch fixes several small issues at vivi register routines: 1) minor and n_devs should be unsigned; 2) n_devs = 0 were not properly handled; 3) if n_devs specify a high number, the driver would just roll back and won't register any device. The proper behaviour is to keep all succeded devices registered; 4) both n_devs and minor were using 0 as permissions. Better to have them with 0444. With the current patch, if n_devs specify a very large value, it will register all possible devices. For example, on a machine without any other V4L drivers loaded, with this patch, we will have something like: vivi: V4L2 device registered as /dev/video0 vivi: V4L2 device registered as /dev/video1 vivi: V4L2 device registered as /dev/video2 ... vivi: V4L2 device registered as /dev/video31 video_register_device_index: get_index failed Video Technology Magazine Virtual Video Capture Board ver 0.5.0 successfully loaded. 5) The number of allocated devices on success is now kept at n_devs: $ cat /sys/module/vivi/parameters/n_devs 32 Thanks to Henne <henne@nachtwindheim.de> for pointing that there were some issues at vivi. Cc: Henne <henne@nachtwindheim.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> |
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| common | ||
| dvb | ||
| radio | ||
| video | ||
| Kconfig | ||
| Makefile | ||