From a8a0a62d1f173620f150830db437ddd65a103d49 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Tue, 5 Jun 2012 22:31:32 +0200 Subject: batman-adv: Transform BATADV_LOG_BUFF(idx) into function The linux Documentation/CodingStyle says that: * Chapter 12: "inline functions are preferable to macros resembling functions" * Chapter 12.2: Depending on local variables with a magic name is bad * Chapter 12.3: Macros with arguments used as l-value are bad Signed-off-by: Sven Eckelmann --- net/batman-adv/bat_debugfs.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'net/batman-adv') diff --git a/net/batman-adv/bat_debugfs.c b/net/batman-adv/bat_debugfs.c index db7b9bf895aa..acf33e265f9c 100644 --- a/net/batman-adv/bat_debugfs.c +++ b/net/batman-adv/bat_debugfs.c @@ -36,13 +36,21 @@ static struct dentry *batadv_debugfs; #ifdef CONFIG_BATMAN_ADV_DEBUG #define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1) -#define BATADV_LOG_BUFF(idx) (debug_log->log_buff[(idx) & BATADV_LOG_BUFF_MASK]) -static int batadv_log_buff_len = BATADV_LOG_BUF_LEN; +static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN; + +static char *batadv_log_char_addr(struct batadv_debug_log *debug_log, + size_t idx) +{ + return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK]; +} static void batadv_emit_log_char(struct batadv_debug_log *debug_log, char c) { - BATADV_LOG_BUFF(debug_log->log_end) = c; + char *char_addr; + + char_addr = batadv_log_char_addr(debug_log, debug_log->log_end); + *char_addr = c; debug_log->log_end++; if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len) @@ -109,6 +117,7 @@ static ssize_t batadv_log_read(struct file *file, char __user *buf, struct batadv_priv *bat_priv = file->private_data; struct batadv_debug_log *debug_log = bat_priv->debug_log; int error, i = 0; + char *char_addr; char c; if ((file->f_flags & O_NONBLOCK) && @@ -134,7 +143,9 @@ static ssize_t batadv_log_read(struct file *file, char __user *buf, while ((!error) && (i < count) && (debug_log->log_start != debug_log->log_end)) { - c = BATADV_LOG_BUFF(debug_log->log_start); + char_addr = batadv_log_char_addr(debug_log, + debug_log->log_start); + c = *char_addr; debug_log->log_start++; -- cgit v1.2.3-58-ga151