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Date: Sun, 05 Jul 2020 21:38:40 +0200
From: "Kars Mulder" <kerneldev@...smulder.nl>
To: "Andy Shevchenko" <andy.shevchenko@...il.com>
Cc: "David Laight" <David.Laight@...lab.com>,
"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
"Pavel Machek" <pavel@....cz>,
linux-kernel@...r.kernel.org
<linux-kernel@...r.kernel.org>,
"Kai-Heng Feng" <kai.heng.feng@...onical.com>
Subject: Re: Writing to a const pointer: is this
supposed to happen?
On Sunday, July 05, 2020 21:05 CEST, Andy Shevchenko <andy.shevchenko@...il.com> wrote:
> On Sunday, July 5, 2020, Kars Mulder <kerneldev@...smulder.nl> wrote:
> > On Saturday, July 04, 2020 22:54 CEST, Andy Shevchenko wrote:
> > > This and similar are not correct. 1/ They are not replacement per se
> > > (because of different behaviour). 2/ They simple_strto*() are not
> > > obsoleted.
> > >
> > > Can you correct all places you found and make it consistent?
> >
> > Something like the following patch? It changes all occurrences of
> > "replacement" or "obsolete" (that I'm aware of) with "preferred over".
> >
> Yes, thanks!
Okay. Then I shall start writing a changelog and formally submit this patch.
... While I'm at that, I realised that I had taken the liberty to correct
the references to the functions they replace (e.g. kstrtol now says it's
preferred over simple_strtol rather than simple_strtoull), which is
a semantically different change than changing replacement/obsolete to
"preferred over".
Does this mean that I should should split my patch into two patches?
---
include/linux/kernel.h | 4 ++--
lib/kstrtox.c | 12 ++++--------
2 files changed, 6 insertions(+), 10 deletions(-)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 82d91547d122..cec7b1e1677a 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -346,7 +346,7 @@ int __must_check kstrtoll(const char *s, unsigned int base, long long *res);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the simple_strtoull. Return code must be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res)
{
@@ -374,7 +374,7 @@ static inline int __must_check kstrtoul(const char *s, unsigned int base, unsign
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the simple_strtoull. Return code must be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
static inline int __must_check kstrtol(const char *s, unsigned int base, long *res)
{
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index 1006bf70bf74..233c7282cf5f 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -115,8 +115,7 @@ static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtoull(const char *s, unsigned int base, unsigned long long *res)
{
@@ -139,8 +138,7 @@ EXPORT_SYMBOL(kstrtoull);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtoll(const char *s, unsigned int base, long long *res)
{
@@ -211,8 +209,7 @@ EXPORT_SYMBOL(_kstrtol);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtouint(const char *s, unsigned int base, unsigned int *res)
{
@@ -242,8 +239,7 @@ EXPORT_SYMBOL(kstrtouint);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtoint(const char *s, unsigned int base, int *res)
{
--
2.27.0
---
include/linux/kernel.h | 4 ++--
lib/kstrtox.c | 12 ++++--------
2 files changed, 6 insertions(+), 10 deletions(-)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 82d91547d122..cec7b1e1677a 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -346,7 +346,7 @@ int __must_check kstrtoll(const char *s, unsigned int base, long long *res);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the simple_strtoull. Return code must be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res)
{
@@ -374,7 +374,7 @@ static inline int __must_check kstrtoul(const char *s, unsigned int base, unsign
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the simple_strtoull. Return code must be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
static inline int __must_check kstrtol(const char *s, unsigned int base, long *res)
{
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index 1006bf70bf74..233c7282cf5f 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -115,8 +115,7 @@ static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtoull(const char *s, unsigned int base, unsigned long long *res)
{
@@ -139,8 +138,7 @@ EXPORT_SYMBOL(kstrtoull);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtoll(const char *s, unsigned int base, long long *res)
{
@@ -211,8 +209,7 @@ EXPORT_SYMBOL(_kstrtol);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtouint(const char *s, unsigned int base, unsigned int *res)
{
@@ -242,8 +239,7 @@ EXPORT_SYMBOL(kstrtouint);
* @res: Where to write the result of the conversion on success.
*
* Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error.
- * Used as a replacement for the obsolete simple_strtoull. Return code must
- * be checked.
+ * Preferred over simple_strtoull. Return code must be checked.
*/
int kstrtoint(const char *s, unsigned int base, int *res)
{
--
2.27.0
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