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Date: Sun, 10 Sep 2023 07:57:42 +0800
From: kernel test robot <lkp@...el.com>
To: Igor Torrente <igormtorrente@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Melissa Wen <melissa.srw@...il.com>
Subject: drivers/gpu/drm/vkms/vkms_formats.c:91:35: sparse: sparse: cast to
restricted __le16
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a3c57ab79a06e333a869ae340420cb3c6f5921d3
commit: 3675d8a1726337bd1e839a185e0a7ce0bc459b6b drm: vkms: Adds XRGB_16161616 and ARGB_1616161616 formats
date: 1 year ago
config: i386-randconfig-061-20230909 (https://download.01.org/0day-ci/archive/20230910/202309100731.aKzChvXw-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230910/202309100731.aKzChvXw-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309100731.aKzChvXw-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/vkms/vkms_formats.c:91:35: sparse: sparse: cast to restricted __le16
drivers/gpu/drm/vkms/vkms_formats.c:92:35: sparse: sparse: cast to restricted __le16
drivers/gpu/drm/vkms/vkms_formats.c:93:35: sparse: sparse: cast to restricted __le16
drivers/gpu/drm/vkms/vkms_formats.c:94:35: sparse: sparse: cast to restricted __le16
drivers/gpu/drm/vkms/vkms_formats.c:109:35: sparse: sparse: cast to restricted __le16
drivers/gpu/drm/vkms/vkms_formats.c:110:35: sparse: sparse: cast to restricted __le16
drivers/gpu/drm/vkms/vkms_formats.c:111:35: sparse: sparse: cast to restricted __le16
>> drivers/gpu/drm/vkms/vkms_formats.c:177:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:177:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:177:31: sparse: got restricted __le16 [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:178:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:178:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:178:31: sparse: got restricted __le16 [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:179:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:179:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:179:31: sparse: got restricted __le16 [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:180:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:180:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:180:31: sparse: got restricted __le16 [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:195:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:195:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:195:31: sparse: got restricted __le16 [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:196:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:196:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:196:31: sparse: got restricted __le16 [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:197:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@
drivers/gpu/drm/vkms/vkms_formats.c:197:31: sparse: expected unsigned short [usertype]
drivers/gpu/drm/vkms/vkms_formats.c:197:31: sparse: got restricted __le16 [usertype]
vim +91 drivers/gpu/drm/vkms/vkms_formats.c
80
81 static void ARGB16161616_to_argb_u16(struct line_buffer *stage_buffer,
82 const struct vkms_frame_info *frame_info,
83 int y)
84 {
85 struct pixel_argb_u16 *out_pixels = stage_buffer->pixels;
86 u16 *src_pixels = get_packed_src_addr(frame_info, y);
87 int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
88 stage_buffer->n_pixels);
89
90 for (size_t x = 0; x < x_limit; x++, src_pixels += 4) {
> 91 out_pixels[x].a = le16_to_cpu(src_pixels[3]);
92 out_pixels[x].r = le16_to_cpu(src_pixels[2]);
93 out_pixels[x].g = le16_to_cpu(src_pixels[1]);
94 out_pixels[x].b = le16_to_cpu(src_pixels[0]);
95 }
96 }
97
98 static void XRGB16161616_to_argb_u16(struct line_buffer *stage_buffer,
99 const struct vkms_frame_info *frame_info,
100 int y)
101 {
102 struct pixel_argb_u16 *out_pixels = stage_buffer->pixels;
103 u16 *src_pixels = get_packed_src_addr(frame_info, y);
104 int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
105 stage_buffer->n_pixels);
106
107 for (size_t x = 0; x < x_limit; x++, src_pixels += 4) {
108 out_pixels[x].a = (u16)0xffff;
109 out_pixels[x].r = le16_to_cpu(src_pixels[2]);
110 out_pixels[x].g = le16_to_cpu(src_pixels[1]);
111 out_pixels[x].b = le16_to_cpu(src_pixels[0]);
112 }
113 }
114
115 /*
116 * The following functions take an line of argb_u16 pixels from the
117 * src_buffer, convert them to a specific format, and store them in the
118 * destination.
119 *
120 * They are used in the `compose_active_planes` to convert and store a line
121 * from the src_buffer to the writeback buffer.
122 */
123 static void argb_u16_to_ARGB8888(struct vkms_frame_info *frame_info,
124 const struct line_buffer *src_buffer, int y)
125 {
126 int x_dst = frame_info->dst.x1;
127 u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
128 struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
129 int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
130 src_buffer->n_pixels);
131
132 for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
133 /*
134 * This sequence below is important because the format's byte order is
135 * in little-endian. In the case of the ARGB8888 the memory is
136 * organized this way:
137 *
138 * | Addr | = blue channel
139 * | Addr + 1 | = green channel
140 * | Addr + 2 | = Red channel
141 * | Addr + 3 | = Alpha channel
142 */
143 dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixels[x].a, 257);
144 dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixels[x].r, 257);
145 dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixels[x].g, 257);
146 dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixels[x].b, 257);
147 }
148 }
149
150 static void argb_u16_to_XRGB8888(struct vkms_frame_info *frame_info,
151 const struct line_buffer *src_buffer, int y)
152 {
153 int x_dst = frame_info->dst.x1;
154 u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
155 struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
156 int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
157 src_buffer->n_pixels);
158
159 for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
160 dst_pixels[3] = 0xff;
161 dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixels[x].r, 257);
162 dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixels[x].g, 257);
163 dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixels[x].b, 257);
164 }
165 }
166
167 static void argb_u16_to_ARGB16161616(struct vkms_frame_info *frame_info,
168 const struct line_buffer *src_buffer, int y)
169 {
170 int x_dst = frame_info->dst.x1;
171 u16 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
172 struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
173 int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
174 src_buffer->n_pixels);
175
176 for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
> 177 dst_pixels[3] = cpu_to_le16(in_pixels[x].a);
178 dst_pixels[2] = cpu_to_le16(in_pixels[x].r);
179 dst_pixels[1] = cpu_to_le16(in_pixels[x].g);
180 dst_pixels[0] = cpu_to_le16(in_pixels[x].b);
181 }
182 }
183
--
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