linux-kernel - [PATCH] baycom_ser_fdx: also allow i/o ports >= 0x1000 and enhanced failure logging

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Message-ID: <20070304213034.GU10782@vanheusden.com>
Date:	Sun, 4 Mar 2007 22:30:35 +0100
From:	Folkert van Heusden <folkert@...heusden.com>
To:	linux-hams@...r.kernel.org, sailer@....ee.ethz.ch
Cc:	henk.termeer@...il.com, udovdh@...all.nl,
	linux-kernel@...r.kernel.org
Subject: [PATCH] baycom_ser_fdx: also allow i/o ports >= 0x1000 and enhanced
	failure logging

Hi,

The baycom_ser_fdx driver did not allow i/o ports >= 0x1000. Now that
there are pci cards (with rs232 ports) which use for example 0xb800 this
limit should not exists.
Also, for non kernel coders find the cause of problems was challenging
so I added extra logging.


Signed-off-by: Folkert van Heusden <folkert@...heusden.com>

--- ./drivers/net/hamradio/baycom_ser_fdx.c.org 2007-03-04 22:24:47.000000000 +0100
+++ ./drivers/net/hamradio/baycom_ser_fdx.c     2007-03-04 22:25:47.000000000 +0100
@@ -413,11 +413,15 @@

        if (!dev || !bc)
                return -ENXIO;
-       if (!dev->base_addr || dev->base_addr > 0x1000-SER12_EXTENT ||
-           dev->irq < 2 || dev->irq > 15)
+       if (!dev->base_addr || dev->base_addr > 0xffff-SER12_EXTENT ||
+           dev->irq < 2 || dev->irq > 15) {
+               printk(KERN_INFO "baycom_ser_fdx: invalid portnumber\n");
                return -ENXIO;
-       if (bc->baud < 300 || bc->baud > 4800)
+       }
+       if (bc->baud < 300 || bc->baud > 4800) {
+               printk(KERN_INFO "baycom_ser_fdx: invalid baudrate\n");
                return -EINVAL;
+       }
        if (!request_region(dev->base_addr, SER12_EXTENT, "baycom_ser_fdx")) {
                printk(KERN_WARNING "BAYCOM_SER_FSX: I/O port 0x%04lx busy \n",
                       dev->base_addr);


Folkert van Heusden

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