Hi
Am 12.07.24 um 18:16 schrieb 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@xxxxxxxxx>
---
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;
You should rather declare pixels as __le16 pointer. Same for the other
changes. See [1] for an example.
Best regards
Thomas
[1]
https://elixir.bootlin.com/linux/v6.9/source/drivers/gpu/drm/drm_format_helper.c#L420
- 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,
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
