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-rw-r--r--drivers/platform/x86/dell-laptop.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index ed317cc..85fbe7c 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -311,10 +311,15 @@ static DEFINE_MUTEX(buffer_mutex);
static int hwswitch_state;
+static void clear_buffer(void)
+{
+ memset(buffer, 0, sizeof(struct calling_interface_buffer));
+}
+
static void get_buffer(void)
{
mutex_lock(&buffer_mutex);
- memset(buffer, 0, sizeof(struct calling_interface_buffer));
+ clear_buffer();
}
static void release_buffer(void)
@@ -558,6 +563,8 @@ static int dell_rfkill_set(void *data, bool blocked)
!(buffer->output[1] & BIT(16)))
disable = 1;
+ clear_buffer();
+
buffer->input[0] = (1 | (radio<<8) | (disable << 16));
dell_send_request(buffer, 17, 11);
@@ -572,6 +579,7 @@ static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio,
if (status & BIT(0)) {
/* Has hw-switch, sync sw_state to BIOS */
int block = rfkill_blocked(rfkill);
+ clear_buffer();
buffer->input[0] = (1 | (radio << 8) | (block << 16));
dell_send_request(buffer, 17, 11);
} else {
@@ -774,6 +782,7 @@ static int __init dell_setup_rfkill(void)
get_buffer();
dell_send_request(buffer, 17, 11);
status = buffer->output[1];
+ clear_buffer();
buffer->input[0] = 0x2;
dell_send_request(buffer, 17, 11);
hwswitch_state = buffer->output[1];
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