From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Oliver Neukum <oneukum@suse.com>,
Johan Hovold <johan@kernel.org>
Subject: [PATCH 4.9 03/25] USB: cdc-acm: fix break reporting
Date: Thu, 14 Oct 2021 16:53:34 +0200 [thread overview]
Message-ID: <20211014145207.690301083@linuxfoundation.org> (raw)
In-Reply-To: <20211014145207.575041491@linuxfoundation.org>
From: Johan Hovold <johan@kernel.org>
commit 58fc1daa4d2e9789b9ffc880907c961ea7c062cc upstream.
A recent change that started reporting break events forgot to push the
event to the line discipline, which meant that a detected break would
not be reported until further characters had been receive (the port
could even have been closed and reopened in between).
Fixes: 08dff274edda ("cdc-acm: fix BREAK rx code path adding necessary calls")
Cc: stable@vger.kernel.org
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210929090937.7410-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -349,6 +349,9 @@ static void acm_ctrl_irq(struct urb *urb
acm->iocount.overrun++;
spin_unlock(&acm->read_lock);
+ if (newctrl & ACM_CTRL_BRK)
+ tty_flip_buffer_push(&acm->port);
+
if (difference)
wake_up_all(&acm->wioctl);
next prev parent reply other threads:[~2021-10-14 14:56 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 14:53 [PATCH 4.9 00/25] 4.9.287-rc1 review Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 01/25] Partially revert "usb: Kconfig: using select for USB_COMMON dependency" Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 02/25] USB: cdc-acm: fix racy tty buffer accesses Greg Kroah-Hartman
2021-10-14 14:53 ` Greg Kroah-Hartman [this message]
2021-10-14 14:53 ` [PATCH 4.9 04/25] ovl: fix missing negative dentry check in ovl_rename() Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 05/25] nfsd4: Handle the NFSv4 READDIR dircount hint being zero Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 06/25] ARM: dts: omap3430-sdp: Fix NAND device node Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 07/25] xtensa: call irqchip_init only when CONFIG_USE_OF is selected Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 08/25] bpf: Fix integer overflow in prealloc_elems_and_freelist() Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 09/25] phy: mdio: fix memory leak Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 10/25] net_sched: fix NULL deref in fifo_set_limit() Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 11/25] powerpc/fsl/dts: Fix phy-connection-type for fm1mac3 Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 12/25] ptp_pch: Load module automatically if ID matches Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 13/25] ARM: imx6: disable the GIC CPU interface before calling stby-poweroff sequence Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 14/25] net: bridge: use nla_total_size_64bit() in br_get_linkxstats_size() Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 15/25] netlink: annotate data races around nlk->bound Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 16/25] drm/nouveau/debugfs: fix file release memory leak Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 17/25] rtnetlink: fix if_nlmsg_stats_size() under estimation Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 18/25] i40e: fix endless loop under rtnl Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 19/25] gup: document and work around "COW can break either way" issue Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 20/25] HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 21/25] netfilter: ip6_tables: zero-initialize fragment offset Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 22/25] mac80211: Drop frames from invalid MAC address in ad-hoc mode Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 23/25] scsi: ses: Fix unsigned comparison with less than zero Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 24/25] scsi: virtio_scsi: Fix spelling mistake "Unsupport" -> "Unsupported" Greg Kroah-Hartman
2021-10-14 14:53 ` [PATCH 4.9 25/25] perf/x86: Reset destroy callback on event init failure Greg Kroah-Hartman
2021-10-14 19:12 ` [PATCH 4.9 00/25] 4.9.287-rc1 review Florian Fainelli
2021-10-14 22:40 ` Shuah Khan
2021-10-15 17:56 ` Daniel Díaz
2021-10-15 22:05 ` Guenter Roeck
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