1 files changed, 23 insertions, 21 deletions

diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index fe7cf0188acc..2fb9a32926f8 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -124,6 +124,7 @@
 #include <linux/ctype.h>
 #include <linux/seq_file.h>
 #include <linux/uaccess.h>
+#include <linux/slab.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <linux/input.h>
@@ -200,7 +201,7 @@ static struct acpi_driver acpi_pcc_driver = {
 };
 
 #define KEYMAP_SIZE             11
-static const int initial_keymap[KEYMAP_SIZE] = {
+static const unsigned int initial_keymap[KEYMAP_SIZE] = {
         /*  0 */ KEY_RESERVED,
         /*  1 */ KEY_BRIGHTNESSDOWN,
         /*  2 */ KEY_BRIGHTNESSUP,
@@ -222,7 +223,7 @@ struct pcc_acpi {
         struct acpi_device      *device;
         struct input_dev        *input_dev;
         struct backlight_device *backlight;
-        int                     keymap[KEYMAP_SIZE];
+        unsigned int            keymap[KEYMAP_SIZE];
 };
 
 struct pcc_keyinput {
@@ -352,7 +353,7 @@ static int bl_set_status(struct backlight_device *bd)
         return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright);
 }
 
-static struct backlight_ops pcc_backlight_ops = {
+static const struct backlight_ops pcc_backlight_ops = {
         .get_brightness = bl_get,
         .update_status  = bl_set_status,
 };
@@ -445,7 +446,8 @@ static struct attribute_group pcc_attr_group = {
 
 /* hotkey input device driver */
 
-static int pcc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+static int pcc_getkeycode(struct input_dev *dev,
+                          unsigned int scancode, unsigned int *keycode)
 {
         struct pcc_acpi *pcc = input_get_drvdata(dev);
 
@@ -457,7 +459,7 @@ static int pcc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
         return 0;
 }
 
-static int keymap_get_by_keycode(struct pcc_acpi *pcc, int keycode)
+static int keymap_get_by_keycode(struct pcc_acpi *pcc, unsigned int keycode)
 {
         int i;
 
@@ -469,7 +471,8 @@ static int keymap_get_by_keycode(struct pcc_acpi *pcc, int keycode)
         return 0;
 }
 
-static int pcc_setkeycode(struct input_dev *dev, int scancode, int keycode)
+static int pcc_setkeycode(struct input_dev *dev,
+                          unsigned int scancode, unsigned int keycode)
 {
         struct pcc_acpi *pcc = input_get_drvdata(dev);
         int oldkeycode;
@@ -477,9 +480,6 @@ static int pcc_setkeycode(struct input_dev *dev, int scancode, int keycode)
         if (scancode >= ARRAY_SIZE(pcc->keymap))
                 return -EINVAL;
 
-        if (keycode < 0 || keycode > KEY_MAX)
-                return -EINVAL;
-
         oldkeycode = pcc->keymap[scancode];
         pcc->keymap[scancode] = keycode;
 
@@ -601,6 +601,7 @@ static int acpi_pcc_hotkey_resume(struct acpi_device *device)
 
 static int acpi_pcc_hotkey_add(struct acpi_device *device)
 {
+        struct backlight_properties props;
         struct pcc_acpi *pcc;
         int num_sifr, result;
 
@@ -638,24 +639,25 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
         if (result) {
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
                                   "Error installing keyinput handler\n"));
-                goto out_sinf;
+                goto out_hotkey;
         }
 
-        /* initialize backlight */
-        pcc->backlight = backlight_device_register("panasonic", NULL, pcc,
-                                                   &pcc_backlight_ops);
-        if (IS_ERR(pcc->backlight))
-                goto out_input;
-
         if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) {
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
                                  "Couldn't retrieve BIOS data\n"));
-                goto out_backlight;
+                goto out_input;
+        }
+        /* initialize backlight */
+        memset(&props, 0, sizeof(struct backlight_properties));
+        props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT];
+        pcc->backlight = backlight_device_register("panasonic", NULL, pcc,
+                                                   &pcc_backlight_ops, &props);
+        if (IS_ERR(pcc->backlight)) {
+                result = PTR_ERR(pcc->backlight);
+                goto out_sinf;
         }
 
         /* read the initial brightness setting from the hardware */
-        pcc->backlight->props.max_brightness =
-                                        pcc->sinf[SINF_AC_MAX_BRIGHT];
         pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT];
 
         /* read the initial sticky key mode from the hardware */
@@ -670,12 +672,12 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
 
 out_backlight:
         backlight_device_unregister(pcc->backlight);
+out_sinf:
+        kfree(pcc->sinf);
 out_input:
         input_unregister_device(pcc->input_dev);
         /* no need to input_free_device() since core input API refcount and
          * free()s the device */
-out_sinf:
-        kfree(pcc->sinf);
 out_hotkey:
         kfree(pcc);