1 files changed, 24 insertions, 18 deletions

diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index 8bc9f51ae6c2..ec0119459bc6 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -112,8 +112,8 @@ static struct workqueue_struct *kpsmoused_wq;
 
 struct psmouse_protocol {
         enum psmouse_type type;
-        char *name;
-        char *alias;
+        const char *name;
+        const char *alias;
         int maxproto;
         int (*detect)(struct psmouse *, int);
         int (*init)(struct psmouse *);
@@ -514,15 +514,17 @@ static int thinking_detect(struct psmouse *psmouse, int set_properties)
 {
         struct ps2dev *ps2dev = &psmouse->ps2dev;
         unsigned char param[2];
-        unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 };
+        static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
         int i;
 
         param[0] = 10;
         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
         param[0] = 0;
         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
-        for (i = 0; seq[i]; i++)
-                ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE);
+        for (i = 0; i < ARRAY_SIZE(seq); i++) {
+                param[0] = seq[i];
+                ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
+        }
         ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
 
         if (param[0] != 2)
@@ -659,7 +661,7 @@ static int psmouse_extensions(struct psmouse *psmouse,
         return PSMOUSE_PS2;
 }
 
-static struct psmouse_protocol psmouse_protocols[] = {
+static const struct psmouse_protocol psmouse_protocols[] = {
         {
                 .type           = PSMOUSE_PS2,
                 .name           = "PS/2",
@@ -733,7 +735,7 @@ static struct psmouse_protocol psmouse_protocols[] = {
         },
 };
 
-static struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
+static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
 {
         int i;
 
@@ -745,9 +747,9 @@ static struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
         return &psmouse_protocols[0];
 }
 
-static struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
+static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
 {
-        struct psmouse_protocol *p;
+        const struct psmouse_protocol *p;
         int i;
 
         for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
@@ -802,13 +804,15 @@ static int psmouse_probe(struct psmouse *psmouse)
 
 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 {
-        unsigned char params[] = { 0, 1, 2, 2, 3 };
+        static const unsigned char params[] = { 0, 1, 2, 2, 3 };
+        unsigned char p;
 
         if (resolution == 0 || resolution > 200)
                 resolution = 200;
 
-        ps2_command(&psmouse->ps2dev, &params[resolution / 50], PSMOUSE_CMD_SETRES);
-        psmouse->resolution = 25 << params[resolution / 50];
+        p = params[resolution / 50];
+        ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
+        psmouse->resolution = 25 << p;
 }
 
 /*
@@ -817,12 +821,14 @@ void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 
 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
 {
-        unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
+        static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
+        unsigned char r;
         int i = 0;
 
         while (rates[i] > rate) i++;
-        ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE);
-        psmouse->rate = rates[i];
+        r = rates[i];
+        ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE);
+        psmouse->rate = r;
 }
 
 /*
@@ -1038,7 +1044,7 @@ static void psmouse_disconnect(struct serio *serio)
         mutex_unlock(&psmouse_mutex);
 }
 
-static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_protocol *proto)
+static int psmouse_switch_protocol(struct psmouse *psmouse, const struct psmouse_protocol *proto)
 {
         struct input_dev *input_dev = psmouse->dev;
 
@@ -1369,7 +1375,7 @@ static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, co
         struct serio *serio = psmouse->ps2dev.serio;
         struct psmouse *parent = NULL;
         struct input_dev *new_dev;
-        struct psmouse_protocol *proto;
+        const struct psmouse_protocol *proto;
         int retry = 0;
 
         if (!(proto = psmouse_protocol_by_name(buf, count)))
@@ -1466,7 +1472,7 @@ static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data,
 
 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
 {
-        struct psmouse_protocol *proto;
+        const struct psmouse_protocol *proto;
 
         if (!val)
                 return -EINVAL;