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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-498361f674fsm10337668f8f.33.2026.11.11.02.28.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2026 02:28:37 -0800 (PST) Date: Wed, 11 Nov 2026 10:28:36 +0000 From: David Laight To: Alejandro Colomar Cc: Joe Perches , Alejandro Colomar , linux-hardening@vger.kernel.org, Krzysztof Kozlowski , "Maciej W. Rozycki" , Geert Uytterhoeven , Andreas Schwab , Andy Shevchenko , Bartosz Golaszewski , Daniel Scally , Danilo Krummrich , Greg Kroah-Hartman , Hans Verkuil , Heikki Krogerus , Johan Hovold , Kees Cook , Laurent Pinchart , Len Brown , Linus Torvalds , Linus Walleij , Namhyung Kim , "Rafael J. Wysocki" , Rob Herring , Sakari Ailus , Saravana Kannan , Steven Rostedt , Tom Zanussi , linux-acpi@vger.kernel.org, driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org Subject: Re: [PATCH v3 5/5] string: Make strprefix() const-qualifier-generic Message-ID: <20261111102836.759ec121@pumpkin> In-Reply-To: References: <35bf6672f84f07de3f40e8db9e7fcfd643894fec.1794323750.git.alx@kernel.org> <64aa89daf23821f95780813fe96882ff61688578.camel@perches.com> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 11 Nov 2026 00:27:28 +0100 Alejandro Colomar wrote: > Hi Joe, > > > Date: 2026-11-10 08:32:41-0800 > > From: Joe Perches > > > > On Tue, 2026-11-10 at 16:33 +0100, Alejandro Colomar wrote: > > > > no commit description on proposed patch > > There isn't much to say, but I'll add something (the explanation of why > the parentheses are needed around the function name, for example). > > > > Suggested-by: Geert Uytterhoeven > > > Signed-off-by: Alejandro Colomar > > > --- > > > include/linux/string.h | 4 +++- > > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > > > diff --git a/include/linux/string.h b/include/linux/string.h > > > index 9e59f9697c9e..55ca4cb5122c 100644 > > > --- a/include/linux/string.h > > > +++ b/include/linux/string.h > > > @@ -590,7 +590,9 @@ void memcpy_and_pad(void *dest, size_t dest_len, const void *src, size_t count, > > > * * @s+strlen(@prefix) if @s starts with @prefix > > > * * NULL if @s does not start with @prefix > > > */ > > > -static inline char *strprefix(const char *s, const char *prefix) > > > +#define strprefix(s, pfx) const_cast(CQChar_of(s) *, strprefix(s, pfx)) > > > + > > > +static inline char *(strprefix)(const char *s, const char *prefix) > > > > Why introduce a new coding style? > > It's not style; the parentheses are technically needed to avoid macro > expansion, since the macro has the same name as the function. > > Alternatively, I could rename the function to __strprefix(). Or put the #define after the function definition. David > > > Have a lovely night! > Alex >