Re: [PATCH 012/196 ver2] nozomi driver

[Frank Seidel <fseidel@suse.de>]

From: Frank Seidel <fseidel@suse.de>

Minor cleanups and removal of in-file changelog:

- Correction of misspellings and wrong encoded Name
- changed 'unsigned' to 'unsigned int' for better readability
- use of generic devicefile access macro
- fixed/added explanatory comment to ntty_put_char

Signed-off-by: Frank Seidel <fseidel@suse.de>
---
 drivers/char/nozomi.c |  122 ++++++++++++++------------------------------------
 1 file changed, 36 insertions(+), 86 deletions(-)

--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -2,7 +2,7 @@
  * nozomi.c  -- HSDPA driver Broadband Wireless Data Card - Globe Trotter
  *
  * Written by: Ulf Jakobsson,
- *             Jan �erfeldt,
+ *             Jan Åkerfeldt,
  *             Stefan Thomasson,
  *
  * Maintained by: Paul Hardwick (p.hardwick@option.com)
@@ -38,60 +38,6 @@
  * --------------------------------------------------------------------------
  */
 
-/*
- * CHANGELOG
- * Version 2.1d
- * 11-November-2007 Jiri Slaby, Frank Seidel
- * - Big rework of multicard support by Jiri
- * - Major cleanups (semaphore to mutex, endianess, no major reservation)
- * - Optimizations
- *
- * Version 2.1c
- * 30-October-2007 Frank Seidel
- * - Completed multicard support
- * - Minor cleanups
- *
- * Version 2.1b
- * 07-August-2007 Frank Seidel
- * - Minor cleanups
- * - theoretical multicard support
- *
- * Version 2.1
- * 03-July-2006 Paul Hardwick
- *
- * - Stability Improvements. Incorporated spinlock wraps patch.
- * - Updated for newer 2.6.14+ kernels (tty_buffer_request_room)
- * - using __devexit macro for tty
- *
- *
- * Version 2.0
- * 08-feb-2006 15:34:10:Ulf
- *
- * -Fixed issue when not waking up line disipine layer, could probably result
- *  in better uplink performance for 2.4.
- *
- * -Fixed issue with big endian during initalization, now proper toggle flags
- *  are handled between preloader and maincode.
- *
- * -Fixed flow control issue.
- *
- * -Added support for setting DTR.
- *
- * -For 2.4 kernels, removing temporary buffer that's not needed.
- *
- * -Reading CTS only for modem port (only port that supports it).
- *
- * -Return 0 in write_room instead of netative value, it's not handled in
- *  upper layer.
- *
- * --------------------------------------------------------------------------
- * Version 1.0
- *
- * First version of driver, only tested with card of type F32_2.
- * Works fine with 2.4 and 2.6 kernels.
- * Driver also support big endian architecture.
- */
-
 /* Enable this to have a lot of debug printouts */
 #define DEBUG
 
@@ -143,8 +89,9 @@ do {								\
 /* Do we need this settable at runtime? */
 static int debug = NOZOMI_DEBUG_LEVEL;
 
-#define D(lvl, args...)  do {if (lvl & debug) NFO(KERN_DEBUG, ##args); } \
-				while (0)
+#define D(lvl, args...)  do \
+			{if (lvl & debug) NFO(KERN_DEBUG, ##args); } \
+			while (0)
 #define D_(lvl, args...) D(lvl, ##args)
 
 /* These printouts are always printed */
@@ -273,13 +220,13 @@ enum port_type {
 /* Big endian */
 
 struct toggles {
-	unsigned enabled:5;	/*
+	unsigned int enabled:5;	/*
 				 * Toggle fields are valid if enabled is 0,
 				 * else A-channels must always be used.
 				 */
-	unsigned diag_dl:1;
-	unsigned mdm_dl:1;
-	unsigned mdm_ul:1;
+	unsigned int diag_dl:1;
+	unsigned int mdm_dl:1;
+	unsigned int mdm_ul:1;
 } __attribute__ ((packed));
 
 /* Configuration table to read at startup of card */
@@ -320,19 +267,19 @@ struct config_table {
 /* This stores all control downlink flags */
 struct ctrl_dl {
 	u8 port;
-	unsigned reserved:4;
-	unsigned CTS:1;
-	unsigned RI:1;
-	unsigned DCD:1;
-	unsigned DSR:1;
+	unsigned int reserved:4;
+	unsigned int CTS:1;
+	unsigned int RI:1;
+	unsigned int DCD:1;
+	unsigned int DSR:1;
 } __attribute__ ((packed));
 
 /* This stores all control uplink flags */
 struct ctrl_ul {
 	u8 port;
-	unsigned reserved:6;
-	unsigned RTS:1;
-	unsigned DTR:1;
+	unsigned int reserved:6;
+	unsigned int RTS:1;
+	unsigned int DTR:1;
 } __attribute__ ((packed));
 
 #else
@@ -340,10 +287,10 @@ struct ctrl_ul {
 
 /* This represents the toggle information */
 struct toggles {
-	unsigned mdm_ul:1;
-	unsigned mdm_dl:1;
-	unsigned diag_dl:1;
-	unsigned enabled:5;	/*
+	unsigned int mdm_ul:1;
+	unsigned int mdm_dl:1;
+	unsigned int diag_dl:1;
+	unsigned int enabled:5;	/*
 				 * Toggle fields are valid if enabled is 0,
 				 * else A-channels must always be used.
 				 */
@@ -379,19 +326,19 @@ struct config_table {
 
 /* This stores all control downlink flags */
 struct ctrl_dl {
-	unsigned DSR:1;
-	unsigned DCD:1;
-	unsigned RI:1;
-	unsigned CTS:1;
-	unsigned reserverd:4;
+	unsigned int DSR:1;
+	unsigned int DCD:1;
+	unsigned int RI:1;
+	unsigned int CTS:1;
+	unsigned int reserverd:4;
 	u8 port;
 } __attribute__ ((packed));
 
 /* This stores all control uplink flags */
 struct ctrl_ul {
-	unsigned DTR:1;
-	unsigned RTS:1;
-	unsigned reserved:6;
+	unsigned int DTR:1;
+	unsigned int RTS:1;
+	unsigned int reserved:6;
 	u8 port;
 } __attribute__ ((packed));
 #endif
@@ -694,7 +641,7 @@ static void dump_table(const struct nozo
 	   dc->config_table.ul_ctrl_len);
 }
 #else
-static __inline__ void dump_table(const struct nozomi *dc) { }
+static inline void dump_table(const struct nozomi *dc) { }
 #endif
 
 /*
@@ -1102,7 +1049,7 @@ static int send_flow_control(struct nozo
 }
 
 /*
- * Handle donlink data, ports that are handled are modem and diagnostics
+ * Handle downlink data, ports that are handled are modem and diagnostics
  * Return 1 - ok
  * Return 0 - toggle fields are out of sync
  */
@@ -1363,7 +1310,7 @@ static ssize_t card_type_show(struct dev
 
 	return sprintf(buf, "%d\n", dc->card_type);
 }
-static DEVICE_ATTR(card_type, 0444, card_type_show, NULL);
+static DEVICE_ATTR(card_type, S_IRUGO, card_type_show, NULL);
 
 static ssize_t open_ttys_show(struct device *dev, struct device_attribute *attr,
 			  char *buf)
@@ -1372,7 +1319,7 @@ static ssize_t open_ttys_show(struct dev
 
 	return sprintf(buf, "%u\n", dc->open_ttys);
 }
-static DEVICE_ATTR(open_ttys, 0444, open_ttys_show, NULL);
+static DEVICE_ATTR(open_ttys, S_IRUGO, open_ttys_show, NULL);
 
 static void make_sysfs_files(struct nozomi *dc)
 {
@@ -1882,7 +1829,10 @@ static void ntty_throttle(struct tty_str
 /* just to discard single character writes */
 static void ntty_put_char(struct tty_struct *tty, unsigned char c)
 {
-	/* FIXME !!! */
+	/*
+	 * card does not react correct when we write single chars
+	 * to the card, so we discard them
+	 */
 	DBG2("PUT CHAR Function: %c", c);
 }