Input: psmouse - use IS_ENABLED instead of homegrown code

Instead of having various protocols provide <protocol>_supported()
functions, let's use IS_ENABLED() macro that works well in "if" statements.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

7 files changed, 3 insertions, 35 deletions

diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c
index 9118a1861a45..28dcfc822bf6 100644
--- a/drivers/input/mouse/cypress_ps2.c
+++ b/drivers/input/mouse/cypress_ps2.c
@@ -710,8 +710,3 @@ err_exit:
 
         return -1;
 }
-
-bool cypress_supported(void)
-{
-        return true;
-}
diff --git a/drivers/input/mouse/cypress_ps2.h b/drivers/input/mouse/cypress_ps2.h
index 4720f21d2d70..81f68aaed7c8 100644
--- a/drivers/input/mouse/cypress_ps2.h
+++ b/drivers/input/mouse/cypress_ps2.h
@@ -172,7 +172,6 @@ struct cytp_data {
 #ifdef CONFIG_MOUSE_PS2_CYPRESS
 int cypress_detect(struct psmouse *psmouse, bool set_properties);
 int cypress_init(struct psmouse *psmouse);
-bool cypress_supported(void);
 #else
 inline int cypress_detect(struct psmouse *psmouse, bool set_properties)
 {
@@ -182,10 +181,6 @@ inline int cypress_init(struct psmouse *psmouse)
 {
         return -ENOSYS;
 }
-inline bool cypress_supported(void)
-{
-        return 0;
-}
 #endif /* CONFIG_MOUSE_PS2_CYPRESS */
 
 #endif  /* _CYPRESS_PS2_H */
diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
index fca38ba63bbe..757f78a94aec 100644
--- a/drivers/input/mouse/focaltech.c
+++ b/drivers/input/mouse/focaltech.c
@@ -424,11 +424,6 @@ fail:
         return error;
 }
 
-bool focaltech_supported(void)
-{
-        return true;
-}
-
 #else /* CONFIG_MOUSE_PS2_FOCALTECH */
 
 int focaltech_init(struct psmouse *psmouse)
@@ -438,9 +433,4 @@ int focaltech_init(struct psmouse *psmouse)
         return 0;
 }
 
-bool focaltech_supported(void)
-{
-        return false;
-}
-
 #endif /* CONFIG_MOUSE_PS2_FOCALTECH */
diff --git a/drivers/input/mouse/focaltech.h b/drivers/input/mouse/focaltech.h
index 71870a9b548a..ca61ebff373e 100644
--- a/drivers/input/mouse/focaltech.h
+++ b/drivers/input/mouse/focaltech.h
@@ -19,6 +19,5 @@
 
 int focaltech_detect(struct psmouse *psmouse, bool set_properties);
 int focaltech_init(struct psmouse *psmouse);
-bool focaltech_supported(void);
 
 #endif
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index 68469feda470..4ccd01d7a48d 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -727,7 +727,7 @@ static int psmouse_extensions(struct psmouse *psmouse,
         if (psmouse_do_detect(focaltech_detect, psmouse, set_properties) == 0) {
                 if (max_proto > PSMOUSE_IMEX) {
                         if (!set_properties || focaltech_init(psmouse) == 0) {
-                                if (focaltech_supported())
+                                if (IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH))
                                         return PSMOUSE_FOCALTECH;
                                 /*
                                  * Note that we need to also restrict
@@ -776,7 +776,7 @@ static int psmouse_extensions(struct psmouse *psmouse,
  * Try activating protocol, but check if support is enabled first, since
  * we try detecting Synaptics even when protocol is disabled.
  */
-                        if (synaptics_supported() &&
+                        if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) &&
                             (!set_properties || synaptics_init(psmouse) == 0)) {
                                 return PSMOUSE_SYNAPTICS;
                         }
@@ -801,7 +801,7 @@ static int psmouse_extensions(struct psmouse *psmouse,
  */
         if (max_proto > PSMOUSE_IMEX &&
                         cypress_detect(psmouse, set_properties) == 0) {
-                if (cypress_supported()) {
+                if (IS_ENABLED(CONFIG_MOUSE_PS2_CYPRESS)) {
                         if (cypress_init(psmouse) == 0)
                                 return PSMOUSE_CYPRESS;
 
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 7e705ee90b86..f2cceb6493a0 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -1454,11 +1454,6 @@ int synaptics_init_relative(struct psmouse *psmouse)
         return __synaptics_init(psmouse, false);
 }
 
-bool synaptics_supported(void)
-{
-        return true;
-}
-
 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
 
 void __init synaptics_module_init(void)
@@ -1470,9 +1465,4 @@ int synaptics_init(struct psmouse *psmouse)
         return -ENOSYS;
 }
 
-bool synaptics_supported(void)
-{
-        return false;
-}
-
 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index 6faf9bb7c117..aedc3299b14e 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -175,6 +175,5 @@ int synaptics_detect(struct psmouse *psmouse, bool set_properties);
 int synaptics_init(struct psmouse *psmouse);
 int synaptics_init_relative(struct psmouse *psmouse);
 void synaptics_reset(struct psmouse *psmouse);
-bool synaptics_supported(void);
 
 #endif /* _SYNAPTICS_H */