diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch b/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch deleted file mode 100644 index 968279185e..0000000000 --- a/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch +++ /dev/null @@ -1,72 +0,0 @@ -From b0321721be50b80c03a51866a94fde4f94690e18 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Wed, 15 Jun 2022 21:42:59 +0200 -Subject: [PATCH] mtd: allow getting MTD device associated with a specific DT - node -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -MTD subsystem API allows interacting with MTD devices (e.g. reading, -writing, handling bad blocks). So far a random driver could get MTD -device only by its name (get_mtd_device_nm()). This change allows -getting them also by a DT node. - -This API is required for drivers handling DT defined MTD partitions in a -specific way (e.g. U-Boot (sub)partition with environment variables). - -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> -Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> -Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> ---- - drivers/mtd/mtdcore.c | 28 ++++++++++++++++++++++++++++ - include/linux/mtd/mtd.h | 1 + - 2 files changed, 29 insertions(+) - ---- a/drivers/mtd/mtdcore.c -+++ b/drivers/mtd/mtdcore.c -@@ -1072,6 +1072,34 @@ int __get_mtd_device(struct mtd_info *mt - EXPORT_SYMBOL_GPL(__get_mtd_device); - - /** -+ * of_get_mtd_device_by_node - obtain an MTD device associated with a given node -+ * -+ * @np: device tree node -+ */ -+struct mtd_info *of_get_mtd_device_by_node(struct device_node *np) -+{ -+ struct mtd_info *mtd = NULL; -+ struct mtd_info *tmp; -+ int err; -+ -+ mutex_lock(&mtd_table_mutex); -+ -+ err = -EPROBE_DEFER; -+ mtd_for_each_device(tmp) { -+ if (mtd_get_of_node(tmp) == np) { -+ mtd = tmp; -+ err = __get_mtd_device(mtd); -+ break; -+ } -+ } -+ -+ mutex_unlock(&mtd_table_mutex); -+ -+ return err ? ERR_PTR(err) : mtd; -+} -+EXPORT_SYMBOL_GPL(of_get_mtd_device_by_node); -+ -+/** - * get_mtd_device_nm - obtain a validated handle for an MTD device by - * device name - * @name: MTD device name to open ---- a/include/linux/mtd/mtd.h -+++ b/include/linux/mtd/mtd.h -@@ -675,6 +675,7 @@ extern int mtd_device_unregister(struct - extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); - extern int __get_mtd_device(struct mtd_info *mtd); - 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 void put_mtd_device(struct mtd_info *mtd); - |