From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 633E2C43381 for ; Mon, 11 Mar 2019 19:59:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2AB112087C for ; Mon, 11 Mar 2019 19:59:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334344; bh=IG/QmBlCQ/BXkYWRO0x2yMArthahtn01d9Y69zUBFzo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=k90XpwbdS2be8EEl4cPHYP2cBe88eQj5edIHjSfvJWZXV3Nwi3/stKiL6qZaQvpyn 5RG11254xJCapUoTp6agLL57ci8WtoGecxTtzOAtFTSeSsLV6qfUSBuRP+3SXidsve KSkpied8IHkqlYOtMD0FscFPMkYKBS62nJA+dfH0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728420AbfCKT7C (ORCPT ); Mon, 11 Mar 2019 15:59:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:36298 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729472AbfCKT6w (ORCPT ); Mon, 11 Mar 2019 15:58:52 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 74C892087C; Mon, 11 Mar 2019 19:58:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334332; bh=IG/QmBlCQ/BXkYWRO0x2yMArthahtn01d9Y69zUBFzo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eo+C7WWBNok4aV/FGuMR7/gUsAeG89jxI0Pxubu0FBl6ZiT2jbQ3IQyoxqUiv/0mm unL9dUYxTn0GXLAeWcKAzCx6hUSQEevNc4FI7LWECNXbdQpae7+qVHqhLHEsLTfdHN QFmG7ivMhtf86OzDIE8z65XkJhv+Vg7K2GDZbHd4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yufen Yu , Jens Axboe , Sasha Levin , linux-block@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 18/27] floppy: check_events callback should not return a negative number Date: Mon, 11 Mar 2019 15:58:15 -0400 Message-Id: <20190311195824.139043-18-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190311195824.139043-1-sashal@kernel.org> References: <20190311195824.139043-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yufen Yu [ Upstream commit 96d7cb932e826219ec41ac02e5af037ffae6098c ] floppy_check_events() is supposed to return bit flags to say which events occured. We should return zero to say that no event flags are set. Only BIT(0) and BIT(1) are used in the caller. And .check_events interface also expect to return an unsigned int value. However, after commit a0c80efe5956, it may return -EINTR (-4u). Here, both BIT(0) and BIT(1) are cleared. So this patch shouldn't affect runtime, but it obviously is still worth fixing. Reviewed-by: Dan Carpenter Fixes: a0c80efe5956 ("floppy: fix lock_fdc() signal handling") Signed-off-by: Yufen Yu Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/block/floppy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index a7f212ea17bf..3ea9c3e9acb3 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -4079,7 +4079,7 @@ static unsigned int floppy_check_events(struct gendisk *disk, if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) { if (lock_fdc(drive)) - return -EINTR; + return 0; poll_drive(false, 0); process_fd_request(); } -- 2.19.1