linux-kernel - [PATCH 4.17 14/46] serial: 8250_pci: Remove stalled entries in blacklist

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Message-Id: <20180706054525.294745281@linuxfoundation.org>
Date:   Fri,  6 Jul 2018 07:46:35 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Matt Turner <mattst88@...il.com>,
        Sergej Pupykin <ml@...gej.pp.ru>,
        Alexandr Petrenko <petrenkoas83@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH 4.17 14/46] serial: 8250_pci: Remove stalled entries in blacklist

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

commit 20dcff436e9fcd2e106b0ccc48a52206bc176d70 upstream.

After the commit

  7d8905d06405 ("serial: 8250_pci: Enable device after we check black list")

pure serial multi-port cards, such as CH355, got blacklisted and thus
not being enumerated anymore. Previously, it seems, blacklisting them
was on purpose to shut up pciserial_init_one() about record duplication.

So, remove the entries from blacklist in order to get cards enumerated.

Fixes: 7d8905d06405 ("serial: 8250_pci: Enable device after we check black list")
Reported-by: Matt Turner <mattst88@...il.com>
Cc: Sergej Pupykin <ml@...gej.pp.ru>
Cc: Alexandr Petrenko <petrenkoas83@...il.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Reviewed-and-Tested-by: Matt Turner <mattst88@...il.com>
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/tty/serial/8250/8250_pci.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -3339,9 +3339,7 @@ static const struct pci_device_id blackl
 	/* multi-io cards handled by parport_serial */
 	{ PCI_DEVICE(0x4348, 0x7053), }, /* WCH CH353 2S1P */
 	{ PCI_DEVICE(0x4348, 0x5053), }, /* WCH CH353 1S1P */
-	{ PCI_DEVICE(0x4348, 0x7173), }, /* WCH CH355 4S */
 	{ PCI_DEVICE(0x1c00, 0x3250), }, /* WCH CH382 2S1P */
-	{ PCI_DEVICE(0x1c00, 0x3470), }, /* WCH CH384 4S */
 
 	/* Moxa Smartio MUE boards handled by 8250_moxa */
 	{ PCI_VDEVICE(MOXA, 0x1024), },