Date: Fri, 1 Jul 2016 01:36:58 -0700 (MST) From: kgshail <kgshail@yahoo.com> To: freebsd-drivers@freebsd.org Subject: /dev/dri/card0 gives ENOTTY error Message-ID: <1467362218984-6110741.post@n5.nabble.com>
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Hi; I have written a driver based on DRM and created equivalent .ko file. The file I insmod are drm.ko, drm_kms_helper.ko and mydrm.ko. It calls my probe function and loads mydrm.ko, and also creates card0 in /dev folder. In user space I call the function ret = drmAvailable(). The result is as follows: It seems it calls preclose because drmAvailable calls close(fd) before exiting. drmAvailable also send the Version IOCTL to DRM. In My case it returns the error number of 0x19 = 25, which corresponds to ENOTTY. Please suggest me how to remove this error and make the ioctls successful. drmOpenDevice: buf = /dev/dri/card0 --drmOpenDevice: open result is 5, (OK) drmOpenDevice will return now with fd = 0x5 drmAvailable - before calling drmGetVersion API: drmGetVersion DRM_IOCTL_VERSION = 0xc0246400 drmIoctl fd = 0x5 request = 0xc0246400 errno = 0x19 Thanks and Regards Shailendra -- View this message in context: http://freebsd.1045724.n5.nabble.com/dev-dri-card0-gives-ENOTTY-error-tp6110741.html Sent from the freebsd-drivers mailing list archive at Nabble.com.
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