6.10-stable review patch. If anyone has any objections, please let me know.
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From: Jammy Huang jammy_huang@aspeedtech.com
commit 12c35c5582acb0fd8f7713ffa75f450766022ff1 upstream.
Suspend will disable pcie device. Thus, resume should do full hw initialization again. Add some APIs to ast_drm_thaw() before ast_post_gpu() to fix the issue.
v2: - fix function-call arguments
Fixes: 5b71707dd13c ("drm/ast: Enable and unlock device access early during init") Reported-by: Cary Garrett cogarre@gmail.com Closes: https://lore.kernel.org/dri-devel/8ce1e1cc351153a890b65e62fed93b54ccd43f6a.c... Cc: Thomas Zimmermann tzimmermann@suse.de Cc: Jocelyn Falempe jfalempe@redhat.com Cc: Dave Airlie airlied@redhat.com Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org # v6.6+ Signed-off-by: Jammy Huang jammy_huang@aspeedtech.com Reviewed-by: Thomas Zimmermann tzimmermann@suse.de Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Link: https://patchwork.freedesktop.org/patch/msgid/20240718030352.654155-1-jammy_... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/ast/ast_drv.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/ast/ast_drv.c +++ b/drivers/gpu/drm/ast/ast_drv.c @@ -391,6 +391,11 @@ static int ast_drm_freeze(struct drm_dev
static int ast_drm_thaw(struct drm_device *dev) { + struct ast_device *ast = to_ast_device(dev); + + ast_enable_vga(ast->ioregs); + ast_open_key(ast->ioregs); + ast_enable_mmio(dev->dev, ast->ioregs); ast_post_gpu(dev);
return drm_mode_config_helper_resume(dev);