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 3975B3BED2A; Sat, 28 Feb 2026 17:39:16 +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=1772300356; cv=none; b=i/wNPFIw4/gk4ePfixeQ6Z3GuNke44ON5XDU/XSFb94IDYMbykuwxzltrlvpjRMcJyE0xt3aStmanNBrEahxANP8p2oDVSyx4tpHgIq/tzyCKzd3llySMz5LYEQJr2UxuYqKjjjV1Y12OZsk1Sg8+l4ZbPPTDPkHlIBttOAR1nE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300356; c=relaxed/simple; bh=cMDqkK33dyeBBPrf5Ta6K24p+p4t+4mm1cDDdK4KIqc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rsSR3jFCaLQrxitpKKuuDX39abW48vrKw6dp+JKveTu5sUyqBLzF6uUz3hYz+k6GKaVwEYj4+eNeKiZgsEtgG0VLeJSmqKq8EuKA9Je0LA8vsS78CWNcr8MYoiMMuIE3husLmLxPNMYO5F9FANq4xGgPkDltERlqRjSxDtB4H7A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HHQdV5mE; 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="HHQdV5mE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8056BC19424; Sat, 28 Feb 2026 17:39:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300356; bh=cMDqkK33dyeBBPrf5Ta6K24p+p4t+4mm1cDDdK4KIqc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HHQdV5mEzf2jYKzD2lnV0cGhB5YVc64ApO3DLMKN0Ej1BjAjpb8pRJl+HLkihiCdS tInKi972pdpGRmhvG32UW+tXxxv9cvtSVFL12UDe68uTpjwucAlccQ15ina9dCoQ1j XW8+B3ltj3ZFgnaH58BpOmrG71hwPH5yFruNA7C/l0g1puafcoCZPSu/wT1SFkMf+L V/j/T5e6232zAwHdaszHjK1P+5HsUmVpFJJsnmXUpk0MtgAfMsPz+1yGTjOAkTTy/Q 3EaExUysZQpEYlFTzOD4idlULmXtonXfEeQ6kQgQ6upXhsefFOyJVfhBq4s9XQ3/HI 3XFPq81lOodTw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Moteen Shah , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH 6.19 390/844] serial: 8250: 8250_omap.c: Clear DMA RX running status only after DMA termination is done Date: Sat, 28 Feb 2026 12:25:03 -0500 Message-ID: <20260228173244.1509663-391-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Moteen Shah [ Upstream commit a5fd8945a478ff9be14812693891d7c9b4185a50 ] Clear rx_running flag only after DMA teardown polling completes. In the previous implementation the flag was being cleared while hardware teardown was still in progress, creating a mismatch between software state (flag = 0, "ready") and hardware state (still terminating). Signed-off-by: Moteen Shah Link: https://patch.msgid.link/20260112081829.63049-3-m-shah@ti.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/8250/8250_omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index e26bae0a6488f..272bc07c9a6b5 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -931,7 +931,6 @@ static void __dma_rx_do_complete(struct uart_8250_port *p) goto out; cookie = dma->rx_cookie; - dma->rx_running = 0; /* Re-enable RX FIFO interrupt now that transfer is complete */ if (priv->habit & UART_HAS_RHR_IT_DIS) { @@ -965,6 +964,7 @@ static void __dma_rx_do_complete(struct uart_8250_port *p) goto out; ret = tty_insert_flip_string(tty_port, dma->rx_buf, count); + dma->rx_running = 0; p->port.icount.rx += ret; p->port.icount.buf_overrun += count - ret; out: -- 2.51.0