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check for uninitialized base address

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1287 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Mark D. Studebaker committed 2002-01-13 16:37:38 +00:00
1 parent f6d20d4a25
commit f18c456e0d
1 file changed
+15 -11
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kernel/busses/i2c-viapro.c
+15 -11
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@@ -41,10 +41,6 @@
#include "version.h"
#include <linux/init.h>
#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif
#ifndef PCI_DEVICE_ID_VIA_82C596_3
#define PCI_DEVICE_ID_VIA_82C596_3 0x3050
#endif
@@ -206,7 +202,7 @@ int vt596_setup(void)
/* Determine the address of the SMBus areas */
smb_cf_hstcfg = num->hstcfg;
if (force_addr) {
vt596_smba = force_addr;
vt596_smba = force_addr & 0xfff0;
force = 0;
} else {
if ((pci_read_config_word(VT596_dev, num->base, &vt596_smba))
@@ -223,11 +219,16 @@ int vt596_setup(void)
return(-ENODEV);
}
}
vt596_smba &= 0xfff0;
if(vt596_smba == 0) {
printk(KERN_ERR "i2c-viapro.o: SMBus base address"
"uninitialized - upgrade BIOS or use force_addr=0xaddr\n");
return -ENODEV;
}
}
vt596_smba &= 0xfff0;
if (check_region(vt596_smba, 8)) {
printk("i2c-viapro.o: SMB region 0x%x already in use!\n",
printk("i2c-viapro.o: SMBus region 0x%x already in use!\n",
vt596_smba);
return(-ENODEV);
}
@@ -251,17 +252,17 @@ int vt596_setup(void)
pci_write_config_byte(VT596_dev, SMBHSTCFG,
temp | 1);
printk
("i2c-viapro.o: WARNING: SMBus interface has been FORCEFULLY "
"ENABLED!\n");
("i2c-viapro.o: enabling SMBus device\n");
} else {
printk
("SMBUS: Error: Host SMBus controller not enabled!\n");
("SMBUS: Error: Host SMBus controller not enabled! - "
"upgrade BIOS or use force=1\n");
return(-ENODEV);
}
}
/* Everything is happy, let's grab the memory and set things up. */
request_region(vt596_smba, 8, "via2-smbus");
request_region(vt596_smba, 8, "viapro-smbus");
#ifdef DEBUG
if ((temp & 0x0E) == 8)
@@ -551,6 +552,9 @@ MODULE_AUTHOR
("Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>");
MODULE_DESCRIPTION("vt82c596 SMBus driver");
#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif
int init_module(void)
{