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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-07-20 00:11:52 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-07-20 00:11:52 +0300 |
| commit | 73ab603f44149ff48889d5109ea9ab64bf38cc69 (patch) | |
| tree | 9550d8fb31ddf6dffedf1f602ed44769e529c1d3 /drivers/gpu/drm/udl/udl_transfer.c | |
| parent | 41afb1dfad4d6af0c716746f6a15f3230482955c (diff) | |
| parent | fb7d1bcf1602b46f37ada72178516c01a250e434 (diff) | |
| download | linux-73ab603f44149ff48889d5109ea9ab64bf38cc69.tar.xz | |
Merge branch 'linus' into x86/timers
Pick up upstream changes to avoid conflicts
Diffstat (limited to 'drivers/gpu/drm/udl/udl_transfer.c')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_transfer.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/udl/udl_transfer.c b/drivers/gpu/drm/udl/udl_transfer.c index 0c87b1ac6b68..b992644c17e6 100644 --- a/drivers/gpu/drm/udl/udl_transfer.c +++ b/drivers/gpu/drm/udl/udl_transfer.c @@ -153,11 +153,11 @@ static void udl_compress_hline16( raw_pixels_count_byte = cmd++; /* we'll know this later */ raw_pixel_start = pixel; - cmd_pixel_end = pixel + (min(MAX_CMD_PIXELS + 1, - min((int)(pixel_end - pixel) / bpp, - (int)(cmd_buffer_end - cmd) / 2))) * bpp; + cmd_pixel_end = pixel + min3(MAX_CMD_PIXELS + 1UL, + (unsigned long)(pixel_end - pixel) / bpp, + (unsigned long)(cmd_buffer_end - 1 - cmd) / 2) * bpp; - prefetch_range((void *) pixel, (cmd_pixel_end - pixel) * bpp); + prefetch_range((void *) pixel, cmd_pixel_end - pixel); pixel_val16 = get_pixel_val16(pixel, bpp); while (pixel < cmd_pixel_end) { @@ -193,6 +193,9 @@ static void udl_compress_hline16( if (pixel > raw_pixel_start) { /* finalize last RAW span */ *raw_pixels_count_byte = ((pixel-raw_pixel_start) / bpp) & 0xFF; + } else { + /* undo unused byte */ + cmd--; } *cmd_pixels_count_byte = ((pixel - cmd_pixel_start) / bpp) & 0xFF; |