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drm/appletbdrm: Use kvzalloc for big allocations

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This driver is attached to a ~2000x80 screen, which is a lot more than
a single page. This causes out of memory errors in some rare cases.

Reported-by: soopyc <cassie@soopy.moe>
Closes: https://github.com/t2linux/fedora/issues/51
Signed-off-by: Sasha Finkelstein <k@chaosmail.tech>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Aditya Garg <gargaditya08@live.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 0670c2f56e ("drm/tiny: add driver for Apple Touch Bars in x86 Macs")
Cc: <stable@vger.kernel.org> # v6.15+
Link: https://patch.msgid.link/20260420-x86-tb-vmalloc-v1-1-7757ff657223@chaosmail.tech
This commit is contained in:
Sasha Finkelstein
2026-04-20 14:17:43 +02:00
committed by Thomas Zimmermann
parent 4aa8110000
commit aaaa684bab
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/tiny/appletbdrm.c
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@@ -353,7 +353,7 @@ static int appletbdrm_primary_plane_helper_atomic_check(struct drm_plane *plane,
frames_size +
sizeof(struct appletbdrm_fb_request_footer), 16);
appletbdrm_state->request = kzalloc(request_size, GFP_KERNEL);
appletbdrm_state->request = kvzalloc(request_size, GFP_KERNEL);
if (!appletbdrm_state->request)
return -ENOMEM;
@@ -543,7 +543,7 @@ static void appletbdrm_primary_plane_destroy_state(struct drm_plane *plane,
{
struct appletbdrm_plane_state *appletbdrm_state = to_appletbdrm_plane_state(state);
kfree(appletbdrm_state->request);
kvfree(appletbdrm_state->request);
kfree(appletbdrm_state->response);
__drm_gem_destroy_shadow_plane_state(&appletbdrm_state->base);