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Commit d9457f0d authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "regmap: Make regmap debugfs write optional"

parents 26893d64 452a3b68

drivers/base/regmap/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -60,3 +60,12 @@ config REGMAP_WCD_IRQ 
	  This config is intended for enabling REGMAP_IRQ for

	  WCD IRQ. Generic WCD IRQ will be used for

	  wcd937x and later targets.



config REGMAP_ALLOW_WRITE_DEBUGFS

	depends on REGMAP && DEBUG_FS

	bool "Allow REGMAP debugfs write"

	default n

	help

	  Say 'y' here to allow the regmap debugfs write. Regmap debugfs write

	  could be risky when accessing some essential hardwares, so it is not

	  recommended to enable this option on any production device.

drivers/base/regmap/regmap-debugfs.c

+3 −4
Original line number Diff line number Diff line
@@ -274,8 +274,7 @@ static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf, 
				   count, ppos);

}



#define REGMAP_ALLOW_WRITE_DEBUGFS

#ifdef REGMAP_ALLOW_WRITE_DEBUGFS

#ifdef CONFIG_REGMAP_ALLOW_WRITE_DEBUGFS

/*

 * This can be dangerous especially when we have clients such as

 * PMICs, therefore don't provide any real compile time configuration option
@@ -345,7 +344,7 @@ static ssize_t regmap_data_read_file(struct file *file, char __user *user_buf, 
			new_count, ppos);

}



#ifdef REGMAP_ALLOW_WRITE_DEBUGFS

#ifdef CONFIG_REGMAP_ALLOW_WRITE_DEBUGFS

static ssize_t regmap_data_write_file(struct file *file,

				     const char __user *user_buf,

				     size_t count, loff_t *ppos)
@@ -661,7 +660,7 @@ void regmap_debugfs_init(struct regmap *map, const char *name) 
	if (map->max_register || regmap_readable(map, 0)) {

		umode_t registers_mode;



#if defined(REGMAP_ALLOW_WRITE_DEBUGFS)

#ifdef CONFIG_REGMAP_ALLOW_WRITE_DEBUGFS

		registers_mode = 0600;

#else

		registers_mode = 0400;