+ lib-kstrtoxc-add-false-true-support-to-kstrtobool.patch added to -mm tree

+ lib-kstrtoxc-add-false-true-support-to-kstrtobool.patch added to -mm tree

[Andrew Morton]

The patch titled
     Subject: lib/kstrtox.c: add "false"/"true" support to kstrtobool()
has been added to the -mm tree.  Its filename is
     lib-kstrtoxc-add-false-true-support-to-kstrtobool.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/lib-kstrtoxc-add-false-true-support-to-kstrtobool.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/lib-kstrtoxc-add-false-true-support-to-kstrtobool.patch

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------------------------------------------------------
From: Jagdish Gediya <jvgediya@linux.ibm.com>
Subject: lib/kstrtox.c: add "false"/"true" support to kstrtobool()

At many places in kernel, It is necessary to convert sysfs input to
corrosponding bool value e.g.  "false" or "0" need to be converted to bool
false, "true" or "1" need to be converted to bool true, places where such
conversion is needed currently check the input string manually,
kstrtobool() can be utilized at such places but currently it doesn't have
support to accept "false"/"true".

Add support to accept "false"/"true" as valid string in kstrtobool().

Link: https://lkml.kernel.org/r/20220426180203.70782-1-jvgediya@linux.ibm.com
Signed-off-by: Jagdish Gediya <jvgediya@linux.ibm.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Richard Fitzgerald <rf@opensource.cirrus.com>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/kstrtox.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/lib/kstrtox.c~lib-kstrtoxc-add-false-true-support-to-kstrtobool
+++ a/lib/kstrtox.c
@@ -340,7 +340,7 @@ EXPORT_SYMBOL(kstrtos8);
  * @s: input string
  * @res: result
  *
- * This routine returns 0 iff the first character is one of 'Yy1Nn0', or
+ * This routine returns 0 if the first character is one of 'YyTt1NnFf0', or
  * [oO][NnFf] for "on" and "off". Otherwise it will return -EINVAL.  Value
  * pointed to by res is updated upon finding a match.
  */
@@ -353,11 +353,15 @@ int kstrtobool(const char *s, bool *res)
 	switch (s[0]) {
 	case 'y':
 	case 'Y':
+	case 't':
+	case 'T':
 	case '1':
 		*res = true;
 		return 0;
 	case 'n':
 	case 'N':
+	case 'f':
+	case 'F':
 	case '0':
 		*res = false;
 		return 0;
_

Patches currently in -mm which might be from jvgediya@linux.ibm.com are

lib-kstrtoxc-add-false-true-support-to-kstrtobool.patch
mm-convert-sysfs-input-to-bool-using-kstrtobool.patch