From 2b2e5fef0180428b68add42c5c535228eb82a45c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 17 Aug 2022 23:20:45 +0200 Subject: [PATCH] kernel: replace downstream get_mtd_device_by_node() implementation MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Use upstream of_get_mtd_device_by_node() which should behave pretty much the same. Implementation differences: get_mtd_device_by_node() of_get_mtd_device_by_node() ---- ---- np->dev.of_node mtd_get_of_node(np) -EPROBE_DEFER -ENODEV Cc: Bernhard Frauendienst Cc: Bernhard Frauendienst Signed-off-by: Rafał Miłecki --- ...-mtd-core-add-get_mtd_device_by_node.patch | 75 ------------------- ...cat-add-dt-driver-for-concat-devices.patch | 2 +- ...-mtd-core-add-get_mtd_device_by_node.patch | 75 ------------------- ...cat-add-dt-driver-for-concat-devices.patch | 2 +- 4 files changed, 2 insertions(+), 152 deletions(-) delete mode 100644 target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch delete mode 100644 target/linux/generic/pending-5.15/495-mtd-core-add-get_mtd_device_by_node.patch diff --git a/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch b/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch deleted file mode 100644 index 66017e16485..00000000000 --- a/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch +++ /dev/null @@ -1,75 +0,0 @@ -From 1bd1b740f208d1cf4071932cc51860d37266c402 Mon Sep 17 00:00:00 2001 -From: Bernhard Frauendienst -Date: Sat, 1 Sep 2018 00:30:11 +0200 -Subject: [PATCH 495/497] mtd: core: add get_mtd_device_by_node - -Add function to retrieve a mtd device by its OF node. Since drivers can -assign arbitrary names to mtd devices in the absence of a label -property, there is no other reliable way to retrieve a mtd device for a -given OF node. - -Signed-off-by: Bernhard Frauendienst -Reviewed-by: Miquel Raynal ---- - drivers/mtd/mtdcore.c | 38 ++++++++++++++++++++++++++++++++++++++ - include/linux/mtd/mtd.h | 2 ++ - 2 files changed, 40 insertions(+) - ---- a/drivers/mtd/mtdcore.c -+++ b/drivers/mtd/mtdcore.c -@@ -1145,6 +1145,44 @@ out_unlock: - } - EXPORT_SYMBOL_GPL(get_mtd_device_nm); - -+/** -+ * get_mtd_device_by_node - obtain a validated handle for an MTD device -+ * by of_node -+ * @of_node: OF node of MTD device to open -+ * -+ * This function returns MTD device description structure in case of -+ * success and an error code in case of failure. -+ */ -+struct mtd_info *get_mtd_device_by_node(const struct device_node *of_node) -+{ -+ int err = -ENODEV; -+ struct mtd_info *mtd = NULL, *other; -+ -+ mutex_lock(&mtd_table_mutex); -+ -+ mtd_for_each_device(other) { -+ if (of_node == other->dev.of_node) { -+ mtd = other; -+ break; -+ } -+ } -+ -+ if (!mtd) -+ goto out_unlock; -+ -+ err = __get_mtd_device(mtd); -+ if (err) -+ goto out_unlock; -+ -+ mutex_unlock(&mtd_table_mutex); -+ return mtd; -+ -+out_unlock: -+ mutex_unlock(&mtd_table_mutex); -+ return ERR_PTR(err); -+} -+EXPORT_SYMBOL_GPL(get_mtd_device_by_node); -+ - void put_mtd_device(struct mtd_info *mtd) - { - mutex_lock(&mtd_table_mutex); ---- a/include/linux/mtd/mtd.h -+++ b/include/linux/mtd/mtd.h -@@ -697,6 +697,8 @@ extern int __get_mtd_device(struct mtd_i - extern void __put_mtd_device(struct mtd_info *mtd); - extern struct mtd_info *of_get_mtd_device_by_node(struct device_node *np); - extern struct mtd_info *get_mtd_device_nm(const char *name); -+extern struct mtd_info *get_mtd_device_by_node( -+ const struct device_node *of_node); - extern void put_mtd_device(struct mtd_info *mtd); - - static inline uint64_t mtdpart_get_offset(const struct mtd_info *mtd) diff --git a/target/linux/generic/pending-5.10/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch b/target/linux/generic/pending-5.10/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch index 058cab09e58..9b938a43f86 100644 --- a/target/linux/generic/pending-5.10/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch +++ b/target/linux/generic/pending-5.10/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch @@ -165,7 +165,7 @@ Signed-off-by: Bernhard Frauendienst + platform_set_drvdata(pdev, info); + + of_for_each_phandle(&it, err, node, "devices", NULL, 0) { -+ mtd = get_mtd_device_by_node(it.node); ++ mtd = of_get_mtd_device_by_node(it.node); + if (IS_ERR(mtd)) { + of_node_put(it.node); + err = -EPROBE_DEFER; diff --git a/target/linux/generic/pending-5.15/495-mtd-core-add-get_mtd_device_by_node.patch b/target/linux/generic/pending-5.15/495-mtd-core-add-get_mtd_device_by_node.patch deleted file mode 100644 index 3e14a1dd315..00000000000 --- a/target/linux/generic/pending-5.15/495-mtd-core-add-get_mtd_device_by_node.patch +++ /dev/null @@ -1,75 +0,0 @@ -From 1bd1b740f208d1cf4071932cc51860d37266c402 Mon Sep 17 00:00:00 2001 -From: Bernhard Frauendienst -Date: Sat, 1 Sep 2018 00:30:11 +0200 -Subject: [PATCH 495/497] mtd: core: add get_mtd_device_by_node - -Add function to retrieve a mtd device by its OF node. Since drivers can -assign arbitrary names to mtd devices in the absence of a label -property, there is no other reliable way to retrieve a mtd device for a -given OF node. - -Signed-off-by: Bernhard Frauendienst -Reviewed-by: Miquel Raynal ---- - drivers/mtd/mtdcore.c | 38 ++++++++++++++++++++++++++++++++++++++ - include/linux/mtd/mtd.h | 2 ++ - 2 files changed, 40 insertions(+) - ---- a/drivers/mtd/mtdcore.c -+++ b/drivers/mtd/mtdcore.c -@@ -1302,6 +1302,44 @@ out_unlock: - } - EXPORT_SYMBOL_GPL(get_mtd_device_nm); - -+/** -+ * get_mtd_device_by_node - obtain a validated handle for an MTD device -+ * by of_node -+ * @of_node: OF node of MTD device to open -+ * -+ * This function returns MTD device description structure in case of -+ * success and an error code in case of failure. -+ */ -+struct mtd_info *get_mtd_device_by_node(const struct device_node *of_node) -+{ -+ int err = -ENODEV; -+ struct mtd_info *mtd = NULL, *other; -+ -+ mutex_lock(&mtd_table_mutex); -+ -+ mtd_for_each_device(other) { -+ if (of_node == other->dev.of_node) { -+ mtd = other; -+ break; -+ } -+ } -+ -+ if (!mtd) -+ goto out_unlock; -+ -+ err = __get_mtd_device(mtd); -+ if (err) -+ goto out_unlock; -+ -+ mutex_unlock(&mtd_table_mutex); -+ return mtd; -+ -+out_unlock: -+ mutex_unlock(&mtd_table_mutex); -+ return ERR_PTR(err); -+} -+EXPORT_SYMBOL_GPL(get_mtd_device_by_node); -+ - void put_mtd_device(struct mtd_info *mtd) - { - mutex_lock(&mtd_table_mutex); ---- a/include/linux/mtd/mtd.h -+++ b/include/linux/mtd/mtd.h -@@ -704,6 +704,8 @@ extern int __get_mtd_device(struct mtd_i - extern void __put_mtd_device(struct mtd_info *mtd); - extern struct mtd_info *of_get_mtd_device_by_node(struct device_node *np); - extern struct mtd_info *get_mtd_device_nm(const char *name); -+extern struct mtd_info *get_mtd_device_by_node( -+ const struct device_node *of_node); - extern void put_mtd_device(struct mtd_info *mtd); - - static inline uint64_t mtdpart_get_offset(const struct mtd_info *mtd) diff --git a/target/linux/generic/pending-5.15/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch b/target/linux/generic/pending-5.15/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch index 321680154d5..e0cbc4508b0 100644 --- a/target/linux/generic/pending-5.15/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch +++ b/target/linux/generic/pending-5.15/497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch @@ -165,7 +165,7 @@ Signed-off-by: Bernhard Frauendienst + platform_set_drvdata(pdev, info); + + of_for_each_phandle(&it, err, node, "devices", NULL, 0) { -+ mtd = get_mtd_device_by_node(it.node); ++ mtd = of_get_mtd_device_by_node(it.node); + if (IS_ERR(mtd)) { + of_node_put(it.node); + err = -EPROBE_DEFER; -- 2.30.2