Revision 29c4a54bc645c8b6745eeb58519e9ad794ceb419 authored by Andy Shevchenko on 16 July 2020, 18:27:47 UTC, committed by Greg Kroah-Hartman on 23 July 2020, 15:04:28 UTC
When we have no primary fwnode or when it's a software node, we may end up in the situation when fwnode is a NULL pointer. There is no point to look for secondary fwnode in such case. Add a necessary check to a condition. Fixes: 114dbb4fa7c4 ("drivers property: When no children in primary, try secondary") Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Maxim Levitsky <mlevitsk@redhat.com> Link: https://lore.kernel.org/r/20200716182747.54929-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 parent ba47d84
debug_page_ref.c
// SPDX-License-Identifier: GPL-2.0
#include <linux/mm_types.h>
#include <linux/tracepoint.h>
#define CREATE_TRACE_POINTS
#include <trace/events/page_ref.h>
void __page_ref_set(struct page *page, int v)
{
trace_page_ref_set(page, v);
}
EXPORT_SYMBOL(__page_ref_set);
EXPORT_TRACEPOINT_SYMBOL(page_ref_set);
void __page_ref_mod(struct page *page, int v)
{
trace_page_ref_mod(page, v);
}
EXPORT_SYMBOL(__page_ref_mod);
EXPORT_TRACEPOINT_SYMBOL(page_ref_mod);
void __page_ref_mod_and_test(struct page *page, int v, int ret)
{
trace_page_ref_mod_and_test(page, v, ret);
}
EXPORT_SYMBOL(__page_ref_mod_and_test);
EXPORT_TRACEPOINT_SYMBOL(page_ref_mod_and_test);
void __page_ref_mod_and_return(struct page *page, int v, int ret)
{
trace_page_ref_mod_and_return(page, v, ret);
}
EXPORT_SYMBOL(__page_ref_mod_and_return);
EXPORT_TRACEPOINT_SYMBOL(page_ref_mod_and_return);
void __page_ref_mod_unless(struct page *page, int v, int u)
{
trace_page_ref_mod_unless(page, v, u);
}
EXPORT_SYMBOL(__page_ref_mod_unless);
EXPORT_TRACEPOINT_SYMBOL(page_ref_mod_unless);
void __page_ref_freeze(struct page *page, int v, int ret)
{
trace_page_ref_freeze(page, v, ret);
}
EXPORT_SYMBOL(__page_ref_freeze);
EXPORT_TRACEPOINT_SYMBOL(page_ref_freeze);
void __page_ref_unfreeze(struct page *page, int v)
{
trace_page_ref_unfreeze(page, v);
}
EXPORT_SYMBOL(__page_ref_unfreeze);
EXPORT_TRACEPOINT_SYMBOL(page_ref_unfreeze);
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