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xenfb: connect to backend before registering fb
As soon as the framebuffer is registered, our methods may be called by the kernel. This leads to a crash as xenfb_refresh() gets called before we have the irq. Connect to the backend before registering our framebuffer with the kernel. [ Fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=14059 ] Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -454,6 +454,10 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
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xenfb_init_shared_page(info, fb_info);
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ret = xenfb_connect_backend(dev, info);
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if (ret < 0)
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goto error;
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ret = register_framebuffer(fb_info);
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if (ret) {
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fb_deferred_io_cleanup(fb_info);
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@ -464,10 +468,6 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
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}
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info->fb_info = fb_info;
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ret = xenfb_connect_backend(dev, info);
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if (ret < 0)
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goto error;
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xenfb_make_preferred_console();
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return 0;
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