[PATCH] USB: sisusbvga: possible cleanups

This patch contains the following possible cleanups:
- make needlessly global functions static
- function and struct declarations belong into header files
- make SiS_VCLKData const
- #if 0 the following unused global functions:
  - sisusb.c: sisusb_writew()
  - sisusb.c: sisusb_readw()
  - sisusb_init.c: SiSUSB_GetModeID()

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

5 files changed, 28 insertions, 72 deletions

diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 19aedbc85ea..738bd7c7451 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -53,6 +53,7 @@
 #include <linux/vmalloc.h>
 
 #include "sisusb.h"
+#include "sisusb_init.h"
 
 #ifdef INCL_SISUSB_CON
 #include <linux/font.h>
@@ -63,36 +64,6 @@
 /* Forward declarations / clean-up routines */
 
 #ifdef INCL_SISUSB_CON
-int     sisusb_setreg(struct sisusb_usb_data *sisusb, int port, u8 data);
-int     sisusb_getreg(struct sisusb_usb_data *sisusb, int port, u8 *data);
-int     sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 data);
-int     sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 *data);
-int     sisusb_setidxregandor(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand, u8 myor);
-int     sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port, u8 index, u8 myor);
-int     sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand);
-
-int     sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data);
-int     sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data);
-int     sisusb_writew(struct sisusb_usb_data *sisusb, u32 adr, u16 data);
-int     sisusb_readw(struct sisusb_usb_data *sisusb, u32 adr, u16 *data);
-int     sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
-                        u32 dest, int length, size_t *bytes_written);
-
-int     sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init);
-
-extern int  SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo);
-extern int  SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo);
-
-extern void sisusb_init_concode(void);
-extern int  sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last);
-extern void sisusb_console_exit(struct sisusb_usb_data *sisusb);
-
-extern void sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location);
-
-extern int  sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
-                u8 *arg, int cmapsz, int ch512, int dorecalc,
-                struct vc_data *c, int fh, int uplock);
-
 static int sisusb_first_vc = 0;
 static int sisusb_last_vc = 0;
 module_param_named(first, sisusb_first_vc, int, 0);
@@ -1360,9 +1331,6 @@ sisusb_getreg(struct sisusb_usb_data *sisusb, int port, u8 *data)
 }
 #endif
 
-#ifndef INCL_SISUSB_CON
-static
-#endif
 int
 sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 data)
 {
@@ -1372,9 +1340,6 @@ sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 data)
         return ret;
 }
 
-#ifndef INCL_SISUSB_CON
-static
-#endif
 int
 sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 *data)
 {
@@ -1384,9 +1349,6 @@ sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 *data)
         return ret;
 }
 
-#ifndef INCL_SISUSB_CON
-static
-#endif
 int
 sisusb_setidxregandor(struct sisusb_usb_data *sisusb, int port, u8 idx,
                                                         u8 myand, u8 myor)
@@ -1416,18 +1378,12 @@ sisusb_setidxregmask(struct sisusb_usb_data *sisusb, int port, u8 idx,
         return ret;
 }
 
-#ifndef INCL_SISUSB_CON
-static
-#endif
 int
 sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port, u8 index, u8 myor)
 {
         return(sisusb_setidxregandor(sisusb, port, index, 0xff, myor));
 }
 
-#ifndef INCL_SISUSB_CON
-static
-#endif
 int
 sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand)
 {
@@ -1449,6 +1405,8 @@ sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data)
         return(sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data));
 }
 
+#if 0
+
 int
 sisusb_writew(struct sisusb_usb_data *sisusb, u32 adr, u16 data)
 {
@@ -1461,6 +1419,8 @@ sisusb_readw(struct sisusb_usb_data *sisusb, u32 adr, u16 *data)
         return(sisusb_read_memio_word(sisusb, SISUSB_TYPE_MEM, adr, data));
 }
 
+#endif  /*  0  */
+
 int
 sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
                         u32 dest, int length, size_t *bytes_written)
diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c
index 092281c172a..fb48feca835 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_con.c
+++ b/drivers/usb/misc/sisusbvga/sisusb_con.c
@@ -70,27 +70,9 @@
 #include <linux/vmalloc.h>
 
 #include "sisusb.h"
+#include "sisusb_init.h"
 
 #ifdef INCL_SISUSB_CON
-extern int sisusb_setreg(struct sisusb_usb_data *, int, u8);
-extern int sisusb_getreg(struct sisusb_usb_data *, int, u8 *);
-extern int sisusb_setidxreg(struct sisusb_usb_data *, int, u8, u8);
-extern int sisusb_getidxreg(struct sisusb_usb_data *, int, u8, u8 *);
-extern int sisusb_setidxregor(struct sisusb_usb_data *, int, u8, u8);
-extern int sisusb_setidxregand(struct sisusb_usb_data *, int, u8, u8);
-extern int sisusb_setidxregandor(struct sisusb_usb_data *, int, u8, u8, u8);
-
-extern int sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data);
-extern int sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data);
-extern int sisusb_writew(struct sisusb_usb_data *sisusb, u32 adr, u16 data);
-extern int sisusb_readw(struct sisusb_usb_data *sisusb, u32 adr, u16 *data);
-extern int sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
-                        u32 dest, int length, size_t *bytes_written);
-
-extern void sisusb_delete(struct kref *kref);
-extern int sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init);
-
-extern int SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo);
 
 #define sisusbcon_writew(val, addr)     (*(addr) = (val))
 #define sisusbcon_readw(addr)           (*(addr))
@@ -103,8 +85,6 @@ static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES];
 /* Forward declaration */
 static const struct consw sisusb_con;
 
-extern struct mutex disconnect_mutex;
-
 static inline void
 sisusbcon_memsetw(u16 *s, u16 c, unsigned int count)
 {
@@ -1487,7 +1467,7 @@ static int sisusbdummycon_dummy(void)
 
 #define SISUSBCONDUMMY  (void *)sisusbdummycon_dummy
 
-const struct consw sisusb_dummy_con = {
+static const struct consw sisusb_dummy_con = {
         .owner =                THIS_MODULE,
         .con_startup =          sisusbdummycon_startup,
         .con_init =             sisusbdummycon_init,
diff --git a/drivers/usb/misc/sisusbvga/sisusb_init.c b/drivers/usb/misc/sisusbvga/sisusb_init.c
index 044fa4482f9..968f0d38cff 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_init.c
+++ b/drivers/usb/misc/sisusbvga/sisusb_init.c
@@ -74,6 +74,7 @@ SiSUSB_InitPtr(struct SiS_Private *SiS_Pr)
 /*            HELPER: Get ModeID             */
 /*********************************************/
 
+#if 0
 unsigned short
 SiSUSB_GetModeID(int HDisplay, int VDisplay, int Depth)
 {
@@ -157,6 +158,7 @@ SiSUSB_GetModeID(int HDisplay, int VDisplay, int Depth)
 
         return ModeIndex;
 }
+#endif  /*  0  */
 
 /*********************************************/
 /*          HELPER: SetReg, GetReg           */
@@ -233,7 +235,7 @@ SiS_DisplayOn(struct SiS_Private *SiS_Pr)
 /*        HELPER: Init Port Addresses        */
 /*********************************************/
 
-void
+static void
 SiSUSBRegInit(struct SiS_Private *SiS_Pr, unsigned long BaseAddr)
 {
         SiS_Pr->SiS_P3c4 = BaseAddr + 0x14;
diff --git a/drivers/usb/misc/sisusbvga/sisusb_init.h b/drivers/usb/misc/sisusbvga/sisusb_init.h
index 5b11577835c..f05f83268af 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_init.h
+++ b/drivers/usb/misc/sisusbvga/sisusb_init.h
@@ -690,7 +690,7 @@ static const struct SiS_CRT1Table SiSUSB_CRT1Table[] =
    0x41}}   /* 0x54 */
 };
 
-static struct SiS_VCLKData SiSUSB_VCLKData[] =
+static const struct SiS_VCLKData SiSUSB_VCLKData[] =
 {
         { 0x1b,0xe1, 25}, /* 0x00 */
         { 0x4e,0xe4, 28}, /* 0x01 */
@@ -808,8 +808,8 @@ static struct SiS_VCLKData SiSUSB_VCLKData[] =
         { 0x2b,0xc2, 35}  /* 0x71 768@576@60 */
 };
 
-void            SiSUSBRegInit(struct SiS_Private *SiS_Pr, unsigned long BaseAddr);
-unsigned short  SiSUSB_GetModeID(int HDisplay, int VDisplay, int Depth);
+extern struct mutex disconnect_mutex;
+
 int             SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo);
 int             SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo);
 
@@ -826,5 +826,19 @@ extern int	sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port,
 extern int      sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port,
                                         u8 idx, u8 myand);
 
+void sisusb_delete(struct kref *kref);
+int sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data);
+int sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data);
+int sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
+                       u32 dest, int length, size_t *bytes_written);
+int sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init);
+int sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
+                         u8 *arg, int cmapsz, int ch512, int dorecalc,
+                         struct vc_data *c, int fh, int uplock);
+void sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location);
+int sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last);
+void sisusb_console_exit(struct sisusb_usb_data *sisusb);
+void sisusb_init_concode(void);
+
 #endif
 
diff --git a/drivers/usb/misc/sisusbvga/sisusb_struct.h b/drivers/usb/misc/sisusbvga/sisusb_struct.h
index 94edd4726c4..f325ecb29a6 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_struct.h
+++ b/drivers/usb/misc/sisusbvga/sisusb_struct.h
@@ -161,7 +161,7 @@ struct SiS_Private
         const struct SiS_Ext            *SiS_EModeIDTable;
         const struct SiS_Ext2           *SiS_RefIndex;
         const struct SiS_CRT1Table      *SiS_CRT1Table;
-        struct SiS_VCLKData             *SiS_VCLKData;
+        const struct SiS_VCLKData       *SiS_VCLKData;
         const struct SiS_ModeResInfo    *SiS_ModeResInfo;
 };