From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 02 Dec 2024 12:37:45 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tI4kL-0034D2-0D for lore@lore.pengutronix.de; Mon, 02 Dec 2024 12:37:45 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tI4kK-0003Rn-Tr for lore@pengutronix.de; Mon, 02 Dec 2024 12:37:45 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rs472Xn99aPJOGUYldok+81hi+ERBbBa8UxlgTrRk6k=; b=vBlDasCN6/txCbtkd+CqKaoHw2 LJpkJwfrKpEYIq1/rvrGijiShrNty9pFFx5L0hKHR8v0cmgxv+PjUtuCmjlkhP9mIlN1nA9wYWoIU LOz61vwHUM7TZGPGRNCVgY6dfAdWb2q2GDt+TeTbyx0fps6HA9LFtPxas50KJHYr2YizsPKP50PTH AF+l+wPURBNNr64cs15sG04K+6btj5/W+cqS19qudw16IGCMt5DKvvJEHzeTmh1ZHMDkCmE6A0+bF Fsnp/LS4nLT2GaKRMRV5KouAc2lrQma7hIyIUUH/TGCs6sl5DJtUuozB8d+LFUDIEaKTHbQS2Sfsm OQ59IyYQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tI4ju-00000005vaV-0li2; Mon, 02 Dec 2024 11:37:18 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tI4Xg-00000005sjF-0N4P for barebox@lists.infradead.org; Mon, 02 Dec 2024 11:24:42 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tI4Xe-000158-Rg; Mon, 02 Dec 2024 12:24:38 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tI4Xd-001Hts-2r; Mon, 02 Dec 2024 12:24:38 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tI4Xe-002FBa-1q; Mon, 02 Dec 2024 12:24:38 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 2 Dec 2024 12:24:36 +0100 Message-Id: <20241202112437.535013-3-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241202112437.535013-1-a.fatoum@pengutronix.de> References: <20241202112437.535013-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241202_032440_153478_1C2552A9 X-CRM114-Status: GOOD ( 14.43 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v3 3/4] bootsource: have bootsource_get_alias_name return const char * X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The only user of bootsource_get_alias_name() calls it and frees it shortly after and users in board code will likely do the same. Instead of allocating every time, let's just return a static array and expect users to call strdup() if they want to keep the bootsource valid for longer. Signed-off-by: Ahmad Fatoum --- v2 -> v3: - no change v1 -> v2: - no change --- common/bootsource.c | 23 +++++++++++------------ include/bootsource.h | 2 +- 2 files changed, 12 insertions(+), 13 deletions(-) diff --git a/common/bootsource.c b/common/bootsource.c index d82bb5f18c52..4bccdfdb70d5 100644 --- a/common/bootsource.c +++ b/common/bootsource.c @@ -72,27 +72,24 @@ const char *bootsource_get_alias_stem(enum bootsource src) /** * bootsource_get_alias_name() - Get the name of the bootsource alias * - * This function will return newly allocated string containing name of + * This function will return a pointer to a static string containing name of * the alias that is expected to point to DTB node corresponding to * detected bootsource * - * NOTE: Caller is expected to free() the string allocated by this - * function */ -char *bootsource_get_alias_name(void) +const char *bootsource_get_alias_name(void) { + static char buf[sizeof("i2c-eeprom-2147483647")]; const char *stem; + int ret; /* * If alias name was overridden via * bootsource_set_alias_name() return that value without * asking any questions. - * - * Note that we have to strdup() the result to make it - * free-able. */ if (bootsource_alias_name) - return strdup(bootsource_alias_name); + return bootsource_alias_name; stem = bootsource_get_alias_stem(bootsource); if (!stem) @@ -105,13 +102,17 @@ char *bootsource_get_alias_name(void) if (bootsource_instance == BOOTSOURCE_INSTANCE_UNKNOWN) return NULL; - return basprintf("%s%d", stem, bootsource_instance); + ret = snprintf(buf, sizeof(buf), "%s%d", stem, bootsource_instance); + if (ret < 0 || ret >= sizeof(buf)) + return NULL; + + return buf; } struct device_node *bootsource_of_node_get(struct device_node *root) { struct device_node *np; - char *alias_name; + const char *alias_name; alias_name = bootsource_get_alias_name(); if (!alias_name) @@ -119,8 +120,6 @@ struct device_node *bootsource_of_node_get(struct device_node *root) np = of_find_node_by_alias(root, alias_name); - free(alias_name); - return np; } diff --git a/include/bootsource.h b/include/bootsource.h index 33ad26946059..9fb77a0bb0a9 100644 --- a/include/bootsource.h +++ b/include/bootsource.h @@ -29,7 +29,7 @@ enum bootsource bootsource_get(void); enum bootsource bootsource_get_device(void); int bootsource_get_instance(void); void bootsource_set_alias_name(const char *name); -char *bootsource_get_alias_name(void); +const char *bootsource_get_alias_name(void); const char *bootsource_to_string(enum bootsource src); const char *bootsource_get_alias_stem(enum bootsource bs); int bootsource_of_alias_xlate(enum bootsource bs, int instance); -- 2.39.5