drm/i915/dsi: add some constness to vbt panel driver

Const is good for you. No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index b0e7327a485f22f8f729b181a033dc252c78f021..561ec2981dfd74d05da739a676972d45dd528352 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -99,7 +99,8 @@ static inline enum port intel_dsi_seq_port_to_port(u8 port)
        return port ? PORT_C : PORT_A;
 }
 
-static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data)
+static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi,
+                                      const u8 *data)
 {
        u8 type, byte, mode, vc, seq_port;
        u16 len;
@@ -165,9 +166,9 @@ static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data)
        return data;
 }
 
-static u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, u8 *data)
+static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
 {
-       u32 delay = *((u32 *) data);
+       u32 delay = *((const u32 *) data);
 
        usleep_range(delay, delay + 10);
        data += 4;
@@ -175,7 +176,7 @@ static u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, u8 *data)
        return data;
 }
 
-static u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, u8 *data)
+static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
 {
        u8 gpio, action;
        u16 function, pad;
@@ -208,7 +209,8 @@ static u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, u8 *data)
        return data;
 }
 
-typedef u8 * (*fn_mipi_elem_exec)(struct intel_dsi *intel_dsi, u8 *data);
+typedef const u8 * (*fn_mipi_elem_exec)(struct intel_dsi *intel_dsi,
+                                       const u8 *data);
 static const fn_mipi_elem_exec exec_elem[] = {
        NULL, /* reserved */
        mipi_exec_send_packet,
@@ -232,13 +234,12 @@ static const char * const seq_name[] = {
        "MIPI_SEQ_DEASSERT_RESET"
 };
 
-static void generic_exec_sequence(struct intel_dsi *intel_dsi, char *sequence)
+static void generic_exec_sequence(struct intel_dsi *intel_dsi, const u8 *data)
 {
-       u8 *data = sequence;
        fn_mipi_elem_exec mipi_elem_exec;
        int index;
 
-       if (!sequence)
+       if (!data)
                return;
 
        DRM_DEBUG_DRIVER("Starting MIPI sequence - %s\n", seq_name[*data]);