[platforms/drm] Add better warnings in DrmBuffer if things fail
For virtual machines with Cirrus device the drmModeAddFB fails. So far there was no error message at all, we only saw it failed. With this change the drmModeAddFB is checked for error and a warning is shown. Also further debug messages are added for other cases where things can fail. Reviewed-By: Eike Heinicc-effect-5.14.5
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f0aeda0738
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1c275a02c8
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@ -24,6 +24,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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// system
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#include <sys/mman.h>
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#include <errno.h>
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// drm
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#include <xf86drm.h>
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#if HAVE_GBM
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@ -44,13 +45,16 @@ DrmBuffer::DrmBuffer(DrmBackend *backend, const QSize &size)
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createArgs.width = size.width();
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createArgs.height = size.height();
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if (drmIoctl(m_backend->fd(), DRM_IOCTL_MODE_CREATE_DUMB, &createArgs) != 0) {
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qCWarning(KWIN_DRM) << "DRM_IOCTL_MODE_CREATE_DUMB failed";
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return;
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}
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m_handle = createArgs.handle;
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m_bufferSize = createArgs.size;
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m_stride = createArgs.pitch;
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drmModeAddFB(m_backend->fd(), size.width(), size.height(), 24, 32,
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m_stride, createArgs.handle, &m_bufferId);
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if (drmModeAddFB(m_backend->fd(), size.width(), size.height(), 24, 32,
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m_stride, createArgs.handle, &m_bufferId) != 0) {
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qCWarning(KWIN_DRM) << "drmModeAddFB failed with errno" << errno;
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}
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}
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