From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx49TbjbHE6bbRojXi34j8xUEgCOhvQAzhjCupoc3LqWo3WO0G4r7p4+VfkHOUjmoxa0+GPmR ARC-Seal: i=1; a=rsa-sha256; t=1523022299; cv=none; d=google.com; s=arc-20160816; b=RpPC/l3uVvTt8r3LM0/ipZ6L3OacYNua3+zpPTONOA2EiYqQvtvJ6dhC8lbNfPqdXW BuvWxwdEJ6hMS47K/9T9VjAhaGsMZ4wwnIBHzrXa8GST+puW5Isgg8aGHiuhPqwQyC+d 099zsOK6NdNc2pk3m5+Su2jkRuftDqRgFbvaT9gDlRnwCSxlNUi9BUHreGC6CBudVuJf SR3fZgr7r56N/tEghQdVF+t44yeKK54qeG9Xa2ehmo56ebMAcCwIOjhvKRBAnzJ/qMSp ltQ4vsUZwZvHEbtfT3bvXxNqPRxu3J8Q5MlfdV6vnDIM9byXCH2HrEOyF+2mk0Uo5468 OtFQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=nu5qP71RM0oQTiGCA1S6+gcu5DHYa3toFm8q9FdnkJs=; b=HjVzkQq1vB/4RKaRtwJurpZ4AfQPucT+EFfOZDn5wWMhfiZHdtmrTsD02aWDlEUwrn WluUXE3Tzt++8SVDidsdcIHl0gy6SgSKkZFWxJ2uo83K/pX183giRuDXzXptXjIbKuOr 2GnFd6TrlXFlUI1Pcv5dMXzOjBB1m3jgqx7clDLO9li8ttsAMv+aXcH3mtYkaIb4hU0f GwpamvWD33RZlE9LUJdkSAeiz5+MqgcOe3QUpHjx3hF6Br18HSXovbQb9Ego7lLPU5gf ir13LROhNNm8HqQNaGSoKAa0zlsNy31GDwf09qh4w9DnnPH1dsGxmgB8FLAXp+gV0dKs Hsqw== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Frank Mori Hess , Ian Abbott Subject: [PATCH 4.16 24/31] staging: comedi: ni_mio_common: ack ai fifo error interrupts. Date: Fri, 6 Apr 2018 15:24:49 +0200 Message-Id: <20180406084344.289281094@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180406084340.999820380@linuxfoundation.org> References: <20180406084340.999820380@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1597003849053166920?= X-GMAIL-MSGID: =?utf-8?q?1597004629874652763?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Frank Mori Hess commit e1d9fc04c41840a4688ef6ce90b6dcca157ea4d7 upstream. Ack ai fifo error interrupts in interrupt handler to clear interrupt after fifo overflow. It should prevent lock-ups after the ai fifo overflows. Cc: # v4.2+ Signed-off-by: Frank Mori Hess Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ni_mio_common.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -1275,6 +1275,8 @@ static void ack_a_interrupt(struct comed ack |= NISTC_INTA_ACK_AI_START; if (a_status & NISTC_AI_STATUS1_STOP) ack |= NISTC_INTA_ACK_AI_STOP; + if (a_status & NISTC_AI_STATUS1_OVER) + ack |= NISTC_INTA_ACK_AI_ERR; if (ack) ni_stc_writew(dev, ack, NISTC_INTA_ACK_REG); }