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xenfb: connect to backend before registering fb

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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>
This commit is contained in:
Jeremy Fitzhardinge 2009-08-27 12:22:43 -07:00 committed by Linus Torvalds
parent 9c504cadc4
commit 0a80fb1023
1 changed files with 4 additions and 4 deletions
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8
drivers/video/xen-fbfront.c
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@ -454,6 +454,10 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
xenfb_init_shared_page(info, fb_info);
ret = xenfb_connect_backend(dev, info);
if (ret < 0)
goto error;
ret = register_framebuffer(fb_info);
if (ret) {
fb_deferred_io_cleanup(fb_info);
@ -464,10 +468,6 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
}
info->fb_info = fb_info;
ret = xenfb_connect_backend(dev, info);
if (ret < 0)
goto error;
xenfb_make_preferred_console();
return 0;