From: William Roberts <[email protected]>

Sample output:
WARNING: %pk is close to %pK, did you mean %pK?.
\#20: FILE: drivers/char/applicom.c:230:
+                       printk(KERN_INFO "Could not allocate IRQ %d for PCI 
Applicom device. %pk\n", dev->irq, pci_get_class);

Signed-off-by: William Roberts <[email protected]>
---
 scripts/checkpatch.pl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 982c52c..f20f5c5 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6096,6 +6096,12 @@ sub process {
                              "recursive locking is bad, do not use this 
ever.\n" . $herecurr);
                }
 
+# check for bad %pK usage
+               if ($rawline =~ /\%pk/) {
+                       WARN("FORMAT SPECIFIER",
+                             "%pk is close to %pK, did you mean %pK?.\n" . 
$herecurr);
+               }
+
 # check for lockdep_set_novalidate_class
                if ($line =~ /^.\s*lockdep_set_novalidate_class\s*\(/ ||
                    $line =~ /__lockdep_no_validate__\s*\)/ ) {
-- 
2.7.4

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