1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index bf0f8b476696..401add28933f 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -233,7 +233,7 @@ static void acpi_gpiochip_request_interrupts(struct acpi_gpio_chip *acpi_gpio)
 {
         struct gpio_chip *chip = acpi_gpio->chip;
 
-        if (!chip->dev || !chip->to_irq)
+        if (!chip->to_irq)
                 return;
 
         INIT_LIST_HEAD(&acpi_gpio->events);
@@ -253,7 +253,7 @@ static void acpi_gpiochip_free_interrupts(struct acpi_gpio_chip *acpi_gpio)
         struct acpi_gpio_event *event, *ep;
         struct gpio_chip *chip = acpi_gpio->chip;
 
-        if (!chip->dev || !chip->to_irq)
+        if (!chip->to_irq)
                 return;
 
         list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
@@ -451,7 +451,7 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
                 if (function == ACPI_WRITE)
                         gpiod_set_raw_value(desc, !!((1 << i) & *value));
                 else
-                        *value |= gpiod_get_raw_value(desc) << i;
+                        *value |= (u64)gpiod_get_raw_value(desc) << i;
         }
 
 out:
@@ -501,6 +501,9 @@ void acpi_gpiochip_add(struct gpio_chip *chip)
         acpi_handle handle;
         acpi_status status;
 
+        if (!chip || !chip->dev)
+                return;
+
         handle = ACPI_HANDLE(chip->dev);
         if (!handle)
                 return;
@@ -531,6 +534,9 @@ void acpi_gpiochip_remove(struct gpio_chip *chip)
         acpi_handle handle;
         acpi_status status;
 
+        if (!chip || !chip->dev)
+                return;
+
         handle = ACPI_HANDLE(chip->dev);
         if (!handle)
                 return;