From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A46B390205; Mon, 18 May 2026 19:12:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779131547; cv=none; b=oTqRlWF20FYVeldlcpLZWi/LA8t/lJUO3035xtTGpjWRO8QW52hxa8g9vHicF0fcCnDmPsBDCgt63kdh/FDUe+728Dhcle8raJSrRcc1Vikl7PRkU55EUouOgCO4MR2P5Z4lMCPcQvpx3zAtAZBesNVA6Pz8HrRQeOa0YcXqS+w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779131547; c=relaxed/simple; bh=kPWcdiQYkZSqMHHL/8MYdL+/3A96p7AAFzS0+qkC1Z4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=aFkTFauGwsDKx8AkM/3IT48o/a10DC3yuf19h1PgGnvfxwy5GxNOV0rB/KtFfB5eCb2IsvPPWFGSTANP0dcibvcvaUP0f6yOEqfJWXV5+UCyO5puQw/PsWvRB7Ur0IdRxSBdlS0wlR9pksKcVJXfXU9ij7pr2om1LAPTt87YNTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YWnfbIXq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YWnfbIXq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A58B1C2BCC6; Mon, 18 May 2026 19:12:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779131546; bh=kPWcdiQYkZSqMHHL/8MYdL+/3A96p7AAFzS0+qkC1Z4=; h=From:To:Cc:Subject:Date:From; b=YWnfbIXqOwykqFDZdaGmcMlC9FApjs2ExnBIQpOi1wHBw/PsvEK31hx6kCwQWTtkI mcnUfVs34sZ4o7pwd9+hA8X4y2LvvdqPa37yeRvFQZqrOA9yq5ceZCR2hojy1hOrSf mz0n2Hapci+9F/i9i/X3HsI4wVm/jSKMZxxHN/Ihvzr26Ispvmh9g5w5A0aHyCuO/f +oe0pAknagv35R/6KByZhReckOcScQSqJgqZUzXBf2dHU/JF2kl//Jn00fL01BbP0Y 8YdOHH25sal1qDxPSlNb59wDH5LAfwfCIqEAgTXzxcr7+efPgrf5eCytIf2GM95E3J twgNyj8tIe5GQ== From: Bjorn Helgaas To: linux-pci@vger.kernel.org Cc: "Rafael J . Wysocki" , Lukas Wunner , Marco Nenciarini , Michal Winiarski , Ilpo Jarvinen , Eric Chanudet , Jean Guyader , Alex Williamson , Sinan Kaya , Mario Limonciello , Mika Westerberg , linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 0/2] Wait for device readiness after D3hot -> D0uninitialized transition Date: Mon, 18 May 2026 14:12:17 -0500 Message-ID: <20260518191220.636213-1-bhelgaas@google.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In pci_power_up(), wait for device to become ready after a soft reset (D3hot->D0uninitialized transition). We already wait 10 ms, but even after that, the device is permitted to respond to config requests with Request Retry Status (RRS) completion status. Use pci_dev_wait() to wait for successful completion. Bjorn Helgaas (2): PCI: Log device readiness timeouts as errors PCI: Wait for device readiness after D3hot -> D0uninitialized transition drivers/pci/pci.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) Changes since v1: - Log device readiness timeouts as errors, not warnings - On timeout, set dev->current_state to D3cold and return -EIO v1: https://lore.kernel.org/all/20260514153124.404060-1-bhelgaas@google.com/