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Date: Fri, 17 Apr 2009 12:04:32 -0700 From: Greg Kroah-Hartman <gregkh@...e.de> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...e.de> Subject: [PATCH 08/10] driver core: prevent device_for_each_child from oopsing David Vrabel noticed that the wireless usb stack likes to call device_for_each_chile() with an empty bus. This used to work fine, but now oopses. This patch fixes the oops and makes the code behave like it used to. Reported-by: David Vrabel <david.vrabel@....com> Tested-by: David Vrabel <david.vrabel@....com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- drivers/base/core.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index e73c92d..d230ff4 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1142,6 +1142,9 @@ int device_for_each_child(struct device *parent, void *data, struct device *child; int error = 0; + if (!parent->p) + return 0; + klist_iter_init(&parent->p->klist_children, &i); while ((child = next_device(&i)) && !error) error = fn(child, data); -- 1.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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