staging: speakup: fix warnings by adding __user annotations

This patch fixes the following sparse warnings by adding
__user annotations.

drivers/staging/speakup/speakup_soft.c:248:34: warning:
incorrect type in argument 1 (different address spaces)
drivers/staging/speakup/speakup_soft.c:248:34:
expected void [noderef] <asn:1>*dst
drivers/staging/speakup/speakup_soft.c:248:34:
got char *[assigned] cp
drivers/staging/speakup/speakup_soft.c:272:40: warning:
incorrect type in argument 1 (different address spaces)
drivers/staging/speakup/speakup_soft.c:272:40:
expected char const [noderef] <asn:1>*s
drivers/staging/speakup/speakup_soft.c:272:40:
got char const *buf
drivers/staging/speakup/speakup_soft.c:306:17: warning:
incorrect type in initializer (incompatible argument 2
(different address spaces))
drivers/staging/speakup/speakup_soft.c:306:17:
expected long ( *read )( ... )
drivers/staging/speakup/speakup_soft.c:306:17:
got long ( static [toplevel] *<noident> )( ... )
drivers/staging/speakup/speakup_soft.c:307:18: warning:
incorrect type in initializer (incompatible argument 2
(different address spaces))
drivers/staging/speakup/speakup_soft.c:307:18:
expected long ( *write )( ... )
drivers/staging/speakup/speakup_soft.c:307:18:
got long ( static [toplevel] *<nfile_operationsoident> )( ... )

drivers/staging/speakup/devsynth.c:29:41: warning:
incorrect type in argument 2 (different address spaces)
drivers/staging/speakup/devsynth.c:29:41:
expected void const [noderef] <asn:1>*from
drivers/staging/speakup/devsynth.c:29:41: got char const *ptr
drivers/staging/speakup/devsynth.c:62:17: warning:
incorrect type in initializer (incompatible argument 2
(different address spaces))
drivers/staging/speakup/devsynth.c:62:17:
expected long ( *read )( ... )
drivers/staging/speakup/devsynth.c:62:17:
got long ( static [toplevel] *<noident> )( ... )
drivers/staging/speakup/devsynth.c:63:18: warning:
incorrect type in initializer (incompatible argument 2
(different address spaces))
drivers/staging/speakup/devsynth.c:63:18:
expected long ( *write )( ... )
drivers/staging/speakup/devsynth.c:63:18:
got long ( static [toplevel] *<noident> )( ... )

Signed-off-by: Emil Goode <[e-mail]>
Acked-by: Samuel Thibault <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/speakup/devsynth.c

···
 static int misc_registered;
 static int dev_opened;
 
-static ssize_t speakup_file_write(struct file *fp, const char *buffer,
-		   size_t nbytes, loff_t *ppos)
+static ssize_t speakup_file_write(struct file *fp, const char __user *buffer,
+				  size_t nbytes, loff_t *ppos)
 {
 	size_t count = nbytes;
-	const char *ptr = buffer;
+	const char __user *ptr = buffer;
 	size_t bytes;
 	unsigned long flags;
 	u_char buf[256];
···
 	return (ssize_t) nbytes;
 }
 
-static ssize_t speakup_file_read(struct file *fp, char *buf, size_t nbytes,
-	loff_t *ppos)
+static ssize_t speakup_file_read(struct file *fp, char __user *buf,
+				 size_t nbytes, loff_t *ppos)
 {
 	return 0;
 }

drivers/staging/speakup/speakup_soft.c

···
 	return 0;
 }
 
-static ssize_t softsynth_read(struct file *fp, char *buf, size_t count,
+static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
 			      loff_t *pos)
 {
 	int chars_sent = 0;
-	char *cp;
+	char __user *cp;
 	char *init;
 	char ch;
 	int empty;
···
 
 static int last_index;
 
-static ssize_t softsynth_write(struct file *fp, const char *buf, size_t count,
-			       loff_t *pos)
+static ssize_t softsynth_write(struct file *fp, const char __user *buf,
+			       size_t count, loff_t *pos)
 {
 	unsigned long supplied_index = 0;
 	int converted;