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Wed, 22 Oct 2025 06:51:42 -0700 (PDT) From: Bartosz Golaszewski Date: Wed, 22 Oct 2025 15:51:31 +0200 Subject: [PATCH v2 1/2] clk: davinci: psc: drop unused reset lookup Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251022-da850-reset-lookup-v2-1-c80f03831f63@linaro.org> References: <20251022-da850-reset-lookup-v2-0-c80f03831f63@linaro.org> In-Reply-To: <20251022-da850-reset-lookup-v2-0-c80f03831f63@linaro.org> To: David Lechner , Michael Turquette , Stephen Boyd , Philipp Zabel Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1225; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=BEFSWjFwHX6uExLjBneDWL7iOS7pXsOG61qh122CNKk=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBo+OFsK51ACOD/ph6HTgR/PWuteV0sKOsHzuDZJ rVM/PUWeC2JAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCaPjhbAAKCRARpy6gFHHX cp9qEADhDRVM3pxdk4GAGxN3WTBZRNwRovTMGBVfOIQyAY9cUZZ2Q2RrdObgHEvHzennf4cg358 YtbRKs7E+NQMSevYJ02nXw/T2RMsySJZLFGmaNkvnLYNzE3xtRf1jmkWyhh1/T/SwKvjqGwCcgw XC4jUs8+qzUw9iuTUHyEtgEjtJ8kaG5i8IcPKAYOtrb+P+5H0kFMcpSPSzezYv0tpFGnXWoV2Nv a08L/ORJmUolVJpYfz3SMm68LoPKaMAA7kiF0yxG/zOCQ/QFsnLEbIC/IyionhnUGOonHWA1wPH NxhhlsVmUo0zQ8fFJuv4hZFz2Bv5mJuX0aBjS//X5D5zTbciEQEGv2maGIPnME5ZMUZEaOe4s65 8/3wj4lHdnw3+4iJur2DPGLVdJpu31uRY6YMulT8+97TjELp+0HFAD3cVyYsvO2XKy6McfP13Tl itYf1fCdWkW93PMjqWKWFvdy/a/S/x9QUiHTFCLjpDSnVGe5+oSspfTtlqsm4d2EBUIXUdcwhK1 EXjhzXpEKzTVclshLayBYmYFbZxip+thF24vYZEdncfgWoBAGM+gGuyZb3XZfGuejx/a5G/RG3T MQVRAGaWPjzquG7LjJzGxHo9iFbuFwmQkJt4YzxrfzgoE+IH8iv5rpLnLVzP/lhcMjCbMqrDj3E yLdYS1av28GX5Uw== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski We no longer support any non-DT DaVinci boards so there are no more users of legacy reset lookup. Signed-off-by: Bartosz Golaszewski Acked-by: David Lechner Acked-by: Stephen Boyd --- drivers/clk/davinci/psc-da850.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/clk/davinci/psc-da850.c b/drivers/clk/davinci/psc-da85= 0.c index 5a18bca464cdaf3a0f3573cf9d70b79ca591cf28..94081ab1e68872d978e4cb162d8= f9101de656d3a 100644 --- a/drivers/clk/davinci/psc-da850.c +++ b/drivers/clk/davinci/psc-da850.c @@ -6,7 +6,6 @@ */ =20 #include -#include #include #include #include @@ -66,14 +65,8 @@ LPSC_CLKDEV3(ecap_clkdev, "fck", "ecap.0", "fck", "ecap.1", "fck", "ecap.2"); =20 -static struct reset_control_lookup da850_psc0_reset_lookup_table[] =3D { - RESET_LOOKUP("da850-psc0", 15, "davinci-rproc.0", NULL), -}; - static int da850_psc0_init(struct device *dev, void __iomem *base) { - reset_controller_add_lookup(da850_psc0_reset_lookup_table, - ARRAY_SIZE(da850_psc0_reset_lookup_table)); return davinci_psc_register_clocks(dev, da850_psc0_info, 16, base); } =20 --=20 2.48.1 From nobody Mon Feb 9 04:03:16 2026 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C128347FF6 for ; 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a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski There are no more users of this code. Let's remove the exported symbols and the implementation from reset core. Reviewed-by: Philipp Zabel Signed-off-by: Bartosz Golaszewski --- drivers/reset/core.c | 121 +----------------------------------= ---- include/linux/reset-controller.h | 33 ----------- 2 files changed, 3 insertions(+), 151 deletions(-) diff --git a/drivers/reset/core.c b/drivers/reset/core.c index 22f67fc77ae531c6efba3ce92cc73a2d57397762..8029e547e3db90ddb85c717dfd7= 35bc8a314dd44 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -190,33 +190,6 @@ int devm_reset_controller_register(struct device *dev, } EXPORT_SYMBOL_GPL(devm_reset_controller_register); =20 -/** - * reset_controller_add_lookup - register a set of lookup entries - * @lookup: array of reset lookup entries - * @num_entries: number of entries in the lookup array - */ -void reset_controller_add_lookup(struct reset_control_lookup *lookup, - unsigned int num_entries) -{ - struct reset_control_lookup *entry; - unsigned int i; - - mutex_lock(&reset_lookup_mutex); - for (i =3D 0; i < num_entries; i++) { - entry =3D &lookup[i]; - - if (!entry->dev_id || !entry->provider) { - pr_warn("%s(): reset lookup entry badly specified, skipping\n", - __func__); - continue; - } - - list_add_tail(&entry->list, &reset_lookup_list); - } - mutex_unlock(&reset_lookup_mutex); -} -EXPORT_SYMBOL_GPL(reset_controller_add_lookup); - static inline struct reset_control_array * rstc_to_array(struct reset_control *rstc) { return container_of(rstc, struct reset_control_array, base); @@ -1081,75 +1054,12 @@ __of_reset_control_get(struct device_node *node, co= nst char *id, int index, } EXPORT_SYMBOL_GPL(__of_reset_control_get); =20 -static struct reset_controller_dev * -__reset_controller_by_name(const char *name) -{ - struct reset_controller_dev *rcdev; - - lockdep_assert_held(&reset_list_mutex); - - list_for_each_entry(rcdev, &reset_controller_list, list) { - if (!rcdev->dev) - continue; - - if (!strcmp(name, dev_name(rcdev->dev))) - return rcdev; - } - - return NULL; -} - -static struct reset_control * -__reset_control_get_from_lookup(struct device *dev, const char *con_id, - enum reset_control_flags flags) -{ - bool optional =3D flags & RESET_CONTROL_FLAGS_BIT_OPTIONAL; - const struct reset_control_lookup *lookup; - struct reset_controller_dev *rcdev; - const char *dev_id =3D dev_name(dev); - struct reset_control *rstc =3D NULL; - - mutex_lock(&reset_lookup_mutex); - - list_for_each_entry(lookup, &reset_lookup_list, list) { - if (strcmp(lookup->dev_id, dev_id)) - continue; - - if ((!con_id && !lookup->con_id) || - ((con_id && lookup->con_id) && - !strcmp(con_id, lookup->con_id))) { - mutex_lock(&reset_list_mutex); - rcdev =3D __reset_controller_by_name(lookup->provider); - if (!rcdev) { - mutex_unlock(&reset_list_mutex); - mutex_unlock(&reset_lookup_mutex); - /* Reset provider may not be ready yet. */ - return ERR_PTR(-EPROBE_DEFER); - } - - flags &=3D ~RESET_CONTROL_FLAGS_BIT_OPTIONAL; - - rstc =3D __reset_control_get_internal(rcdev, - lookup->index, - flags); - mutex_unlock(&reset_list_mutex); - break; - } - } - - mutex_unlock(&reset_lookup_mutex); - - if (!rstc) - return optional ? NULL : ERR_PTR(-ENOENT); - - return rstc; -} - struct reset_control *__reset_control_get(struct device *dev, const char *= id, int index, enum reset_control_flags flags) { bool shared =3D flags & RESET_CONTROL_FLAGS_BIT_SHARED; bool acquired =3D flags & RESET_CONTROL_FLAGS_BIT_ACQUIRED; + bool optional =3D flags & RESET_CONTROL_FLAGS_BIT_OPTIONAL; =20 if (WARN_ON(shared && acquired)) return ERR_PTR(-EINVAL); @@ -1157,7 +1067,7 @@ struct reset_control *__reset_control_get(struct devi= ce *dev, const char *id, if (dev->of_node) return __of_reset_control_get(dev->of_node, id, index, flags); =20 - return __reset_control_get_from_lookup(dev, id, flags); + return optional ? NULL : ERR_PTR(-ENOENT); } EXPORT_SYMBOL_GPL(__reset_control_get); =20 @@ -1492,31 +1402,6 @@ devm_reset_control_array_get(struct device *dev, enu= m reset_control_flags flags) } EXPORT_SYMBOL_GPL(devm_reset_control_array_get); =20 -static int reset_control_get_count_from_lookup(struct device *dev) -{ - const struct reset_control_lookup *lookup; - const char *dev_id; - int count =3D 0; - - if (!dev) - return -EINVAL; - - dev_id =3D dev_name(dev); - mutex_lock(&reset_lookup_mutex); - - list_for_each_entry(lookup, &reset_lookup_list, list) { - if (!strcmp(lookup->dev_id, dev_id)) - count++; - } - - mutex_unlock(&reset_lookup_mutex); - - if (count =3D=3D 0) - count =3D -ENOENT; - - return count; -} - /** * reset_control_get_count - Count number of resets available with a device * @@ -1530,6 +1415,6 @@ int reset_control_get_count(struct device *dev) if (dev->of_node) return of_reset_control_get_count(dev->of_node); =20 - return reset_control_get_count_from_lookup(dev); + return -ENOENT; } EXPORT_SYMBOL_GPL(reset_control_get_count); diff --git a/include/linux/reset-controller.h b/include/linux/reset-control= ler.h index 357df16ede328657478eceb1ba6065f42a210ea2..46514cb1b9e0626872fe71357b2= 4d54ff0e81a8b 100644 --- a/include/linux/reset-controller.h +++ b/include/linux/reset-controller.h @@ -26,31 +26,6 @@ struct module; struct device_node; struct of_phandle_args; =20 -/** - * struct reset_control_lookup - represents a single lookup entry - * - * @list: internal list of all reset lookup entries - * @provider: name of the reset controller device controlling this reset l= ine - * @index: ID of the reset controller in the reset controller device - * @dev_id: name of the device associated with this reset line - * @con_id: name of the reset line (can be NULL) - */ -struct reset_control_lookup { - struct list_head list; - const char *provider; - unsigned int index; - const char *dev_id; - const char *con_id; -}; - -#define RESET_LOOKUP(_provider, _index, _dev_id, _con_id) \ - { \ - .provider =3D _provider, \ - .index =3D _index, \ - .dev_id =3D _dev_id, \ - .con_id =3D _con_id, \ - } - /** * struct reset_controller_dev - reset controller entity that might * provide multiple reset controls @@ -90,9 +65,6 @@ void reset_controller_unregister(struct reset_controller_= dev *rcdev); struct device; int devm_reset_controller_register(struct device *dev, struct reset_controller_dev *rcdev); - -void reset_controller_add_lookup(struct reset_control_lookup *lookup, - unsigned int num_entries); #else static inline int reset_controller_register(struct reset_controller_dev *r= cdev) { @@ -108,11 +80,6 @@ static inline int devm_reset_controller_register(struct= device *dev, { return 0; } - -static inline void reset_controller_add_lookup(struct reset_control_lookup= *lookup, - unsigned int num_entries) -{ -} #endif =20 #endif --=20 2.48.1