From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794060719; b=rGZodDvxmYf9FnubA708grE/OV04O8it2pmXA+4nEho3Mn44l+toZ8wcbPvHpEosMMIH Jngd2veQzzjReK+Eo3srmMTdMDKgu8GOZoE5OTfqLrUq9mgYbue/WeLQUAjZnVGn3v20g 993Fr4Y7j/2xtdinrgSt8MGkTphSQFyc+VVuu5uML5OTAs00XWORig83lh7YCGaosacbB X2r3LK0JaKJIiU34WQT/dAwFU3AqtoBd8lFEXnQX1LFblf4gNT5xpXCQ/cMhUqBk84kMV vJR9gqzZeCJCPEM4YHXPBVLT2wOb1uRjmacIkk+ifxnlon49/DgsUOGq97GPaAuyVlg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794060719; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=+pC7goQamOoHK5/e7aIuzmOVvXWSFS2Gj1+BfuJbwKo=; b=C3C5xnnoX9zC1hrAku6027qcvjhHkGYtnBfGwk0qYB1jWjvBUrbQpTI56GhjY9BmTsA7 3mENm856iQk6TzzZ8cPU9OxEGUxrwHsOcr7BJIA9PV0Su4jTsGtXoNwul9ahvEDYZTqJ+ BLtTgdT1+k0BLN/kkwhF4P+94JGgg3U4NOwxJT50HorES4d8j56OIWDtLkGfffY683C+q DUaP4QljU5w9hu3Hw5/LhFa33vWQGD3nrULI5OWCN/62Lc85ydSywx8y7or64Ckb7sWa5 KAbhqbeQbG9uNv0+vFsSLOSksIoXQByt3g1yiTLE7FfVTfL8TM0Ir22g3lFt2jdAauw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="e1VFBZ/t"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4C260606A326; Sat, 7 Nov 2026 14:11:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=e1VFBZ/t Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA8D21F008A1; Sat, 7 Nov 2026 14:11:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794060719; bh=+pC7goQamOoHK5/e7aIuzmOVvXWSFS2Gj1+BfuJbwKo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=e1VFBZ/tAJIIsltI2Xne+ERaumYbYPL17IJtu2G3P80r0WTwxxDy31XUYkaIsd/UG Za1NQmJGHe7K0YJEDRAwqpkIea9frvFOIr/B7v9NpDVxRejbtMR865qTFN5gAueYlM ktQXGze5kxZuWIrgAkQqaG5NWfhZvWvXE97OOUG8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Oliver Neukum , Sasha Levin Subject: [PATCH 6.12 0141/1536] usb: misc: cypress_cy7c63: check result of IO Date: Sat, 7 Nov 2026 08:35:57 -0500 Message-ID: <20261107135001.647697236@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Oliver Neukum [ Upstream commit 0673b919e0933541ae56bb3f0253853f696d3773 ] If the device returns a bogus short read, treat it as EIO. Actually check for IO errors. Signed-off-by: Oliver Neukum Link: https://patch.msgid.link/20260710095523.1646308-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/misc/cypress_cy7c63.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/misc/cypress_cy7c63.c b/drivers/usb/misc/cypress_cy7c63.c index 75f5a740cba39..e1a0c1ae93f2b 100644 --- a/drivers/usb/misc/cypress_cy7c63.c +++ b/drivers/usb/misc/cypress_cy7c63.c @@ -89,8 +89,11 @@ static int vendor_command(struct cypress *dev, unsigned char request, address, data, iobuf, CYPRESS_MAX_REQSIZE, USB_CTRL_GET_TIMEOUT); /* we must not process garbage */ - if (retval < 2) + if (retval < 2) { + if (retval >= 0) + retval = -EIO; goto err_buf; + } /* store returned data (more READs to be added) */ switch (request) { @@ -175,8 +178,9 @@ static ssize_t read_port(struct device *dev, struct device_attribute *attr, dev_dbg(&cyp->udev->dev, "READ_PORT%d called\n", port_num); result = vendor_command(cyp, CYPRESS_READ_PORT, read_id, 0); - dev_dbg(&cyp->udev->dev, "Result of vendor_command: %d\n\n", result); + if (result < 0) + return result; return sprintf(buf, "%d", cyp->port[port_num]); } -- 2.53.0