From patchwork Thu Oct 10 16:27:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rob Herring (Arm)" X-Patchwork-Id: 13830530 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E22001CF298; Thu, 10 Oct 2024 16:28:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728577682; cv=none; b=epFqavzRPwF1x8o0DGr2Wxl8W6cx+lizJpoRg2OaJNn2G2y60oQLGldGmj05jkI0GuLgTindJZ79Pb69CIogIwac+5QYl2Wq+qyJzJNXfM5Q5eK7OJuN2cd7m4CejUfJ0WVGskbPYYHTh/2+xFUshDZhDb/gXNkLz2LxtzyJrow= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728577682; c=relaxed/simple; bh=WZvhT5fTmftqx804frNdKOlCWKv78SUumi8ZT/rAffo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=szHISHjzMA3chHZJkXppcnAB49VrEN+WTiUhQ1SUXmtUfHjErwR5iNEv6EJTtCVhbwpwVcM6MdZ1WW45MwGtftEV34i6XO2+X8I9jTzKMtGsTvDsKDhL3mGn5mTrrtB1x2KMVwq4t2q+OC0DHfeDshieyBKxQFBTAW+Az2Tdrec= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A1iXhaW5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="A1iXhaW5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90F6CC4CEC5; Thu, 10 Oct 2024 16:28:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728577681; bh=WZvhT5fTmftqx804frNdKOlCWKv78SUumi8ZT/rAffo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=A1iXhaW5Ud4z1mRPFg24NbYe6i3KKRTMWuG5DmYdiYmywfoK2kovzq7ZaWMCEeyNQ exVlH5iojyR2eNK+Q5IwpjlK3gYeWgus6H3bHBnDRMVCs1n9QPJEejcJL5VOPGxXGO SZ207Utsyx+DgQLjziDEkJEBD5y9trTBpP/bVKcxuLeE2yCx2jSNIQmexCc9QIe7+6 cIpc4ddvtdIecuA04BZk18CY3KafhbKWcjwjhACwRzIYLCBvd19PQN+X8Mmje2yO9u 9jFAMnK349PgJ8k5N2tKRxztL8uE2WA2G4NJTAUNfaafPot7WyQuyLLfzpwQxTYsh3 QTeMjN+eK+EEA== From: "Rob Herring (Arm)" Date: Thu, 10 Oct 2024 11:27:16 -0500 Subject: [PATCH 3/7] of: Constify struct device_node function arguments Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241010-dt-const-v1-3-87a51f558425@kernel.org> References: <20241010-dt-const-v1-0-87a51f558425@kernel.org> In-Reply-To: <20241010-dt-const-v1-0-87a51f558425@kernel.org> To: Bjorn Helgaas , Andrew Morton , Saravana Kannan Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org X-Mailer: b4 0.15-dev Functions which don't change the refcount or otherwise modify struct device_node can make struct device_node const. Signed-off-by: Rob Herring (Arm) Reviewed-by: Krzysztof Kozlowski --- drivers/of/address.c | 10 +++++----- drivers/of/base.c | 8 ++++---- drivers/of/cpu.c | 2 +- drivers/of/irq.c | 4 ++-- drivers/of/of_private.h | 2 +- drivers/of/overlay.c | 14 +++++++------- drivers/of/resolver.c | 4 ++-- include/linux/of.h | 14 +++++++------- include/linux/of_address.h | 4 ++-- include/linux/of_irq.h | 4 ++-- 10 files changed, 33 insertions(+), 33 deletions(-) diff --git a/drivers/of/address.c b/drivers/of/address.c index 286f0c161e33..aa1a4e381461 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -147,7 +147,7 @@ static unsigned int of_bus_pci_get_flags(const __be32 *addr) * PCI bus specific translator */ -static bool of_node_is_pcie(struct device_node *np) +static bool of_node_is_pcie(const struct device_node *np) { bool is_pcie = of_node_name_eq(np, "pcie"); @@ -230,8 +230,8 @@ static int __of_address_resource_bounds(struct resource *r, u64 start, u64 size) * To guard against that we try to register the IO range first. * If that fails we know that pci_address_to_pio() will do too. */ -int of_pci_range_to_resource(struct of_pci_range *range, - struct device_node *np, struct resource *res) +int of_pci_range_to_resource(const struct of_pci_range *range, + const struct device_node *np, struct resource *res) { u64 start; int err; @@ -399,7 +399,7 @@ static struct of_bus *of_match_bus(struct device_node *np) return NULL; } -static int of_empty_ranges_quirk(struct device_node *np) +static int of_empty_ranges_quirk(const struct device_node *np) { if (IS_ENABLED(CONFIG_PPC)) { /* To save cycles, we cache the result for global "Mac" setting */ @@ -1030,7 +1030,7 @@ EXPORT_SYMBOL_GPL(of_dma_is_coherent); * This is currently only enabled on builds that support Apple ARM devices, as * an optimization. */ -static bool of_mmio_is_nonposted(struct device_node *np) +static bool of_mmio_is_nonposted(const struct device_node *np) { if (!IS_ENABLED(CONFIG_ARCH_APPLE)) return false; diff --git a/drivers/of/base.c b/drivers/of/base.c index 20603d3c9931..d1aebb979522 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -771,7 +771,7 @@ struct device_node *of_get_child_by_name(const struct device_node *node, } EXPORT_SYMBOL(of_get_child_by_name); -struct device_node *__of_find_node_by_path(struct device_node *parent, +struct device_node *__of_find_node_by_path(const struct device_node *parent, const char *path) { struct device_node *child; @@ -1840,7 +1840,7 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)) * * Return: The alias id if found. */ -int of_alias_get_id(struct device_node *np, const char *stem) +int of_alias_get_id(const struct device_node *np, const char *stem) { struct alias_prop *app; int id = -ENODEV; @@ -1898,7 +1898,7 @@ EXPORT_SYMBOL_GPL(of_alias_get_highest_id); * * Return: TRUE if console successfully setup. Otherwise return FALSE. */ -bool of_console_check(struct device_node *dn, char *name, int index) +bool of_console_check(const struct device_node *dn, char *name, int index) { if (!dn || dn != of_stdout || console_set_on_cmdline) return false; @@ -1986,7 +1986,7 @@ int of_find_last_cache_level(unsigned int cpu) * * Return: 0 on success or a standard error code on failure. */ -int of_map_id(struct device_node *np, u32 id, +int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { diff --git a/drivers/of/cpu.c b/drivers/of/cpu.c index d17b2f851082..5214dc3d05ae 100644 --- a/drivers/of/cpu.c +++ b/drivers/of/cpu.c @@ -188,7 +188,7 @@ EXPORT_SYMBOL(of_cpu_node_to_id); * Return: An idle state node if found at @index. The refcount is incremented * for it, so call of_node_put() on it when done. Returns NULL if not found. */ -struct device_node *of_get_cpu_state_node(struct device_node *cpu_node, +struct device_node *of_get_cpu_state_node(const struct device_node *cpu_node, int index) { struct of_phandle_args args; diff --git a/drivers/of/irq.c b/drivers/of/irq.c index a494f56a0d0e..67fc0ceaa5f5 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -720,7 +720,7 @@ struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, * Returns: the MSI domain for this device (or NULL on failure). */ struct irq_domain *of_msi_get_domain(struct device *dev, - struct device_node *np, + const struct device_node *np, enum irq_domain_bus_token token) { struct of_phandle_iterator it; @@ -742,7 +742,7 @@ EXPORT_SYMBOL_GPL(of_msi_get_domain); * @dev: device structure to associate with an MSI irq domain * @np: device node for that device */ -void of_msi_configure(struct device *dev, struct device_node *np) +void of_msi_configure(struct device *dev, const struct device_node *np) { dev_set_msi_domain(dev, of_msi_get_domain(dev, np, DOMAIN_BUS_PLATFORM_MSI)); diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h index 04aa2a91f851..d957cc6ce437 100644 --- a/drivers/of/of_private.h +++ b/drivers/of/of_private.h @@ -127,7 +127,7 @@ void __of_prop_free(struct property *prop); struct device_node *__of_node_dup(const struct device_node *np, const char *full_name); -struct device_node *__of_find_node_by_path(struct device_node *parent, +struct device_node *__of_find_node_by_path(const struct device_node *parent, const char *path); struct device_node *__of_find_node_by_full_path(struct device_node *node, const char *path); diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c index cbdecccca097..19aaa96ee817 100644 --- a/drivers/of/overlay.c +++ b/drivers/of/overlay.c @@ -398,7 +398,7 @@ static int add_changeset_property(struct overlay_changeset *ovcs, * invalid @overlay. */ static int add_changeset_node(struct overlay_changeset *ovcs, - struct target *target, struct device_node *node) + struct target *target, const struct device_node *node) { const char *node_kbasename; const __be32 *phandle; @@ -675,8 +675,8 @@ static int build_changeset(struct overlay_changeset *ovcs) * 1) "target" property containing the phandle of the target * 2) "target-path" property containing the path of the target */ -static struct device_node *find_target(struct device_node *info_node, - struct device_node *target_base) +static struct device_node *find_target(const struct device_node *info_node, + const struct device_node *target_base) { struct device_node *node; char *target_path; @@ -735,7 +735,7 @@ static struct device_node *find_target(struct device_node *info_node, * init_overlay_changeset() must call free_overlay_changeset(). */ static int init_overlay_changeset(struct overlay_changeset *ovcs, - struct device_node *target_base) + const struct device_node *target_base) { struct device_node *node, *overlay_node; struct fragment *fragment; @@ -910,7 +910,7 @@ static void free_overlay_changeset(struct overlay_changeset *ovcs) */ static int of_overlay_apply(struct overlay_changeset *ovcs, - struct device_node *base) + const struct device_node *base) { int ret = 0, ret_revert, ret_tmp; @@ -978,7 +978,7 @@ static int of_overlay_apply(struct overlay_changeset *ovcs, */ int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size, - int *ret_ovcs_id, struct device_node *base) + int *ret_ovcs_id, const struct device_node *base) { void *new_fdt; void *new_fdt_align; @@ -1074,7 +1074,7 @@ EXPORT_SYMBOL_GPL(of_overlay_fdt_apply); * * Returns 1 if @np is @tree or is contained in @tree, else 0 */ -static int find_node(struct device_node *tree, struct device_node *np) +static int find_node(const struct device_node *tree, struct device_node *np) { if (tree == np) return 1; diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c index 5cf96776dd7d..ee7769525bb2 100644 --- a/drivers/of/resolver.c +++ b/drivers/of/resolver.c @@ -147,8 +147,8 @@ static int node_name_cmp(const struct device_node *dn1, * of offsets of the phandle reference(s) within the respective property * value(s). The values at these offsets will be fixed up. */ -static int adjust_local_phandle_references(struct device_node *local_fixups, - struct device_node *overlay, int phandle_delta) +static int adjust_local_phandle_references(const struct device_node *local_fixups, + const struct device_node *overlay, int phandle_delta) { struct device_node *overlay_child; struct property *prop_fix, *prop; diff --git a/include/linux/of.h b/include/linux/of.h index 85b60ac9eec5..7875b308f13c 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -357,7 +357,7 @@ extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); extern struct device_node *of_cpu_device_node_get(int cpu); extern int of_cpu_node_to_id(struct device_node *np); extern struct device_node *of_get_next_cpu_node(struct device_node *prev); -extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node, +extern struct device_node *of_get_cpu_state_node(const struct device_node *cpu_node, int index); extern u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread); @@ -395,7 +395,7 @@ extern int of_phandle_iterator_args(struct of_phandle_iterator *it, int size); extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); -extern int of_alias_get_id(struct device_node *np, const char *stem); +extern int of_alias_get_id(const struct device_node *np, const char *stem); extern int of_alias_get_highest_id(const char *stem); bool of_machine_compatible_match(const char *const *compats); @@ -446,9 +446,9 @@ const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, */ const char *of_prop_next_string(struct property *prop, const char *cur); -bool of_console_check(struct device_node *dn, char *name, int index); +bool of_console_check(const struct device_node *dn, char *name, int index); -int of_map_id(struct device_node *np, u32 id, +int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out); @@ -871,7 +871,7 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag { } -static inline int of_map_id(struct device_node *np, u32 id, +static inline int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { @@ -1734,7 +1734,7 @@ struct of_overlay_notify_data { #ifdef CONFIG_OF_OVERLAY int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size, - int *ovcs_id, struct device_node *target_base); + int *ovcs_id, const struct device_node *target_base); int of_overlay_remove(int *ovcs_id); int of_overlay_remove_all(void); @@ -1744,7 +1744,7 @@ int of_overlay_notifier_unregister(struct notifier_block *nb); #else static inline int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size, - int *ovcs_id, struct device_node *target_base) + int *ovcs_id, const struct device_node *target_base) { return -ENOTSUPP; } diff --git a/include/linux/of_address.h b/include/linux/of_address.h index 26a19daf0d09..bd46dbcc6e88 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -83,8 +83,8 @@ extern struct of_pci_range *of_pci_range_parser_one( struct of_pci_range *range); extern int of_pci_address_to_resource(struct device_node *dev, int bar, struct resource *r); -extern int of_pci_range_to_resource(struct of_pci_range *range, - struct device_node *np, +extern int of_pci_range_to_resource(const struct of_pci_range *range, + const struct device_node *np, struct resource *res); extern int of_range_to_resource(struct device_node *np, int index, struct resource *res); diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index d6d3eae2f145..6337ad4e5fe8 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -48,12 +48,12 @@ extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); extern struct device_node *of_irq_find_parent(struct device_node *child); extern struct irq_domain *of_msi_get_domain(struct device *dev, - struct device_node *np, + const struct device_node *np, enum irq_domain_bus_token token); extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, u32 bus_token); -extern void of_msi_configure(struct device *dev, struct device_node *np); +extern void of_msi_configure(struct device *dev, const struct device_node *np); u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); #else static inline void of_irq_init(const struct of_device_id *matches)