Loading drivers/soc/qcom/Kconfig +6 −0 Original line number Diff line number Diff line Loading @@ -1061,4 +1061,10 @@ config QCOM_HYP_CORE_CTL An offline CPU is considered as a reserved CPU since this OS can't use it. config RENAME_BLOCK_DEVICE bool "Rename block device node in /dev" help This driver is used to rename the block device node assigned by generic driver to a name that is needed. source "drivers/soc/qcom/wcnss/Kconfig" drivers/soc/qcom/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -118,3 +118,4 @@ obj-$(CONFIG_QCOM_ADSP_MANUAL_VOTE) += adsp_vote_qmi.o adsp_lpm_voting_v01.o obj-$(CONFIG_CPU_V7) += idle-v7.o obj-$(CONFIG_MSM_BAM_DMUX) += bam_dmux.o obj-$(CONFIG_WCNSS_CORE) += wcnss/ obj-$(CONFIG_RENAME_BLOCK_DEVICE) += rename_block_device.o drivers/soc/qcom/rename_block_device.c 0 → 100644 +65 −0 Original line number Diff line number Diff line /* Copyright (c) 2020 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/init.h> #include <linux/module.h> #include <linux/mount.h> #include <linux/genhd.h> #include <linux/device.h> #include <linux/of.h> #define PATH_SIZE 32 static int rename_blk_dev_init(void) { dev_t dev; int index = 0, partno; struct gendisk *disk; struct device_node *node; char dev_path[PATH_SIZE]; const char *actual_name, *modified_name; node = of_find_compatible_node(NULL, NULL, "qcom,blkdev-rename"); if (!node) { pr_err("qcom,blkdev-rename is missing\n"); goto out; } while (!of_property_read_string_index(node, "actual-dev", index, &actual_name)) { memset(dev_path, '\0', PATH_SIZE); snprintf(dev_path, PATH_SIZE, "/dev/%s", actual_name); dev = name_to_dev_t(dev_path); if (!dev) { pr_err("No device path : %s\n", dev_path); return -EINVAL; } disk = get_gendisk(dev, &partno); if (!disk) { pr_err("No device with dev path : %s\n", dev_path); return -ENXIO; } if (!of_property_read_string_index(node, "rename-dev", index, &modified_name)) { device_rename(disk_to_dev(disk), modified_name); } else { pr_err("rename-dev for actual-dev = %s is missing", actual_name); return -ENXIO; } index++; } out: return 0; } late_initcall(rename_blk_dev_init); MODULE_DESCRIPTION("Rename block devices"); MODULE_LICENSE("GPL v2"); Loading
drivers/soc/qcom/Kconfig +6 −0 Original line number Diff line number Diff line Loading @@ -1061,4 +1061,10 @@ config QCOM_HYP_CORE_CTL An offline CPU is considered as a reserved CPU since this OS can't use it. config RENAME_BLOCK_DEVICE bool "Rename block device node in /dev" help This driver is used to rename the block device node assigned by generic driver to a name that is needed. source "drivers/soc/qcom/wcnss/Kconfig"
drivers/soc/qcom/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -118,3 +118,4 @@ obj-$(CONFIG_QCOM_ADSP_MANUAL_VOTE) += adsp_vote_qmi.o adsp_lpm_voting_v01.o obj-$(CONFIG_CPU_V7) += idle-v7.o obj-$(CONFIG_MSM_BAM_DMUX) += bam_dmux.o obj-$(CONFIG_WCNSS_CORE) += wcnss/ obj-$(CONFIG_RENAME_BLOCK_DEVICE) += rename_block_device.o
drivers/soc/qcom/rename_block_device.c 0 → 100644 +65 −0 Original line number Diff line number Diff line /* Copyright (c) 2020 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/init.h> #include <linux/module.h> #include <linux/mount.h> #include <linux/genhd.h> #include <linux/device.h> #include <linux/of.h> #define PATH_SIZE 32 static int rename_blk_dev_init(void) { dev_t dev; int index = 0, partno; struct gendisk *disk; struct device_node *node; char dev_path[PATH_SIZE]; const char *actual_name, *modified_name; node = of_find_compatible_node(NULL, NULL, "qcom,blkdev-rename"); if (!node) { pr_err("qcom,blkdev-rename is missing\n"); goto out; } while (!of_property_read_string_index(node, "actual-dev", index, &actual_name)) { memset(dev_path, '\0', PATH_SIZE); snprintf(dev_path, PATH_SIZE, "/dev/%s", actual_name); dev = name_to_dev_t(dev_path); if (!dev) { pr_err("No device path : %s\n", dev_path); return -EINVAL; } disk = get_gendisk(dev, &partno); if (!disk) { pr_err("No device with dev path : %s\n", dev_path); return -ENXIO; } if (!of_property_read_string_index(node, "rename-dev", index, &modified_name)) { device_rename(disk_to_dev(disk), modified_name); } else { pr_err("rename-dev for actual-dev = %s is missing", actual_name); return -ENXIO; } index++; } out: return 0; } late_initcall(rename_blk_dev_init); MODULE_DESCRIPTION("Rename block devices"); MODULE_LICENSE("GPL v2");
