[PATCH] drm/vkms: Fix cpu_to_le16()/le16_to_cpu() warnings

[José Expósito]

Building with Sparse enabled prints this warning for cpu_to_le16()
calls:

    warning: incorrect type in assignment (different base types)
        expected unsigned short [usertype]
        got restricted __le16 [usertype]

And this warning for le16_to_cpu() calls:

    warning: cast to restricted __le16

Add casts to fix both warnings.

Signed-off-by: José Expósito <jose.exposito89 at gmail.com>
---
 drivers/gpu/drm/vkms/vkms_formats.c | 32 ++++++++++++++---------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index 36046b12f296..053fa6ce41a9 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -77,10 +77,10 @@ static void ARGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_
 {
 	u16 *pixels = (u16 *)src_pixels;
 
-	out_pixel->a = le16_to_cpu(pixels[3]);
-	out_pixel->r = le16_to_cpu(pixels[2]);
-	out_pixel->g = le16_to_cpu(pixels[1]);
-	out_pixel->b = le16_to_cpu(pixels[0]);
+	out_pixel->a = le16_to_cpu((__force __le16)pixels[3]);
+	out_pixel->r = le16_to_cpu((__force __le16)pixels[2]);
+	out_pixel->g = le16_to_cpu((__force __le16)pixels[1]);
+	out_pixel->b = le16_to_cpu((__force __le16)pixels[0]);
 }
 
 static void XRGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
@@ -88,9 +88,9 @@ static void XRGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_
 	u16 *pixels = (u16 *)src_pixels;
 
 	out_pixel->a = (u16)0xffff;
-	out_pixel->r = le16_to_cpu(pixels[2]);
-	out_pixel->g = le16_to_cpu(pixels[1]);
-	out_pixel->b = le16_to_cpu(pixels[0]);
+	out_pixel->r = le16_to_cpu((__force __le16)pixels[2]);
+	out_pixel->g = le16_to_cpu((__force __le16)pixels[1]);
+	out_pixel->b = le16_to_cpu((__force __le16)pixels[0]);
 }
 
 static void RGB565_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
@@ -100,7 +100,7 @@ static void RGB565_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
 	s64 fp_rb_ratio = drm_fixp_div(drm_int2fixp(65535), drm_int2fixp(31));
 	s64 fp_g_ratio = drm_fixp_div(drm_int2fixp(65535), drm_int2fixp(63));
 
-	u16 rgb_565 = le16_to_cpu(*pixels);
+	u16 rgb_565 = le16_to_cpu((__force __le16)*pixels);
 	s64 fp_r = drm_int2fixp((rgb_565 >> 11) & 0x1f);
 	s64 fp_g = drm_int2fixp((rgb_565 >> 5) & 0x3f);
 	s64 fp_b = drm_int2fixp(rgb_565 & 0x1f);
@@ -180,10 +180,10 @@ static void argb_u16_to_ARGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_p
 {
 	u16 *pixels = (u16 *)dst_pixels;
 
-	pixels[3] = cpu_to_le16(in_pixel->a);
-	pixels[2] = cpu_to_le16(in_pixel->r);
-	pixels[1] = cpu_to_le16(in_pixel->g);
-	pixels[0] = cpu_to_le16(in_pixel->b);
+	pixels[3] = (__force u16)cpu_to_le16(in_pixel->a);
+	pixels[2] = (__force u16)cpu_to_le16(in_pixel->r);
+	pixels[1] = (__force u16)cpu_to_le16(in_pixel->g);
+	pixels[0] = (__force u16)cpu_to_le16(in_pixel->b);
 }
 
 static void argb_u16_to_XRGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
@@ -191,9 +191,9 @@ static void argb_u16_to_XRGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_p
 	u16 *pixels = (u16 *)dst_pixels;
 
 	pixels[3] = 0xffff;
-	pixels[2] = cpu_to_le16(in_pixel->r);
-	pixels[1] = cpu_to_le16(in_pixel->g);
-	pixels[0] = cpu_to_le16(in_pixel->b);
+	pixels[2] = (__force u16)cpu_to_le16(in_pixel->r);
+	pixels[1] = (__force u16)cpu_to_le16(in_pixel->g);
+	pixels[0] = (__force u16)cpu_to_le16(in_pixel->b);
 }
 
 static void argb_u16_to_RGB565(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
@@ -211,7 +211,7 @@ static void argb_u16_to_RGB565(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
 	u16 g = drm_fixp2int(drm_fixp_div(fp_g, fp_g_ratio));
 	u16 b = drm_fixp2int(drm_fixp_div(fp_b, fp_rb_ratio));
 
-	*pixels = cpu_to_le16(r << 11 | g << 5 | b);
+	*pixels = (__force u16)cpu_to_le16(r << 11 | g << 5 | b);
 }
 
 void vkms_writeback_row(struct vkms_writeback_job *wb,
-- 
2.45.2