lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 28 Dec 2020 13:50:12 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Johan Hovold <johan@...nel.org> Subject: [PATCH 4.19 293/346] USB: serial: keyspan_pda: fix stalled writes From: Johan Hovold <johan@...nel.org> commit c01d2c58698f710c9e13ba3e2d296328606f74fd upstream. Make sure to clear the write-busy flag also in case no new data was submitted due to lack of device buffer space so that writing is resumed once space again becomes available. Fixes: 507ca9bc0476 ("[PATCH] USB: add ability for usb-serial drivers to determine if their write urb is currently being used.") Cc: stable <stable@...r.kernel.org> # 2.6.13 Acked-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Johan Hovold <johan@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/usb/serial/keyspan_pda.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -548,7 +548,7 @@ static int keyspan_pda_write(struct tty_ rc = count; exit: - if (rc < 0) + if (rc <= 0) set_bit(0, &port->write_urbs_free); return rc; }
Powered by blists - more mailing lists