linux-kernel - [PATCH] 8250_pci: Add IBM Saturn serial card

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Date:	Wed, 14 Oct 2009 10:40:53 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Michael Reed <mreed10@...ibm.com>
Subject: [PATCH] 8250_pci: Add IBM Saturn serial card

The IBM Saturn serial card has only one port. Without that fixup,
the kernel thinks it has two, which confuses userland setup and
admin tools as well.

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---

Andrew & Others on CC... not sure who takes care of patches to
that driver nowadays. Should I send directly to Linus ?

diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index e7108e7..7b5ff09 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -1561,6 +1561,7 @@ enum pci_board_num_t {
 	pbn_exar_XR17C152,
 	pbn_exar_XR17C154,
 	pbn_exar_XR17C158,
+	pbn_exar_ibm_saturn,
 	pbn_pasemi_1682M,
 	pbn_ni8430_2,
 	pbn_ni8430_4,
@@ -2146,6 +2147,13 @@ static struct pciserial_board pci_boards[] __devinitdata = {
 		.base_baud	= 921600,
 		.uart_offset	= 0x200,
 	},
+	[pbn_exar_ibm_saturn] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 1,
+		.base_baud	= 921600,
+		.uart_offset	= 0x200,
+	},
+
 	/*
 	 * PA Semi PWRficient PA6T-1682M on-chip UART
 	 */
@@ -2649,6 +2657,9 @@ static struct pci_device_id serial_pci_tbl[] = {
 		PCI_SUBVENDOR_ID_CONNECT_TECH,
 		PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_8_485, 0, 0,
 		pbn_b0_8_1843200_200 },
+	{	PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
+		PCI_VENDOR_ID_IBM, PCI_SUBDEVICE_ID_IBM_SATURN_SERIAL_ONE_PORT,
+		0, 0, pbn_exar_ibm_saturn },
 
 	{	PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_U530,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 0d96be9..06a7b94 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -481,6 +481,8 @@
 #define PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM	0x0251
 #define PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM_PCIE 0x0361
 #define PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL	0x252
+#define PCI_SUBVENDOR_ID_IBM		0x1014
+#define PCI_SUBDEVICE_ID_IBM_SATURN_SERIAL_ONE_PORT	0x03d4
 
 #define PCI_VENDOR_ID_UNISYS		0x1018
 #define PCI_DEVICE_ID_UNISYS_DMA_DIRECTOR 0x001C






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