Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/nouveau: Compute dumb-buffer sizes with drm_mode_size_dumb()
Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and
buffer size. Align the pitch to a multiple of 256.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250821081918.79786-15-tzimmermann@suse.de
+4
-3
+4
-3
drivers/gpu/drm/nouveau/nouveau_display.c
+4
-3
drivers/gpu/drm/nouveau/nouveau_display.c
···
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_client_event.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_dumb_buffers.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_probe_helper.h>
···
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uint32_t domain;
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int ret;
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args->pitch = roundup(args->width * (args->bpp / 8), 256);
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args->size = args->pitch * args->height;
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args->size = roundup(args->size, PAGE_SIZE);
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ret = drm_mode_size_dumb(dev, args, SZ_256, 0);
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if (ret)
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return ret;
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/* Use VRAM if there is any ; otherwise fallback to system memory */
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if (nouveau_drm(dev)->client.device.info.ram_size != 0)