Hi.
The following patch makes drivers/scsi/cpqfcTSinit.c check the
return code of ioremap, makes it use the return code of
request_region instead of check_region and converts the touched
code to use forward gotos on error paths.
It applies cleanly against ac10 and 241p9.
Comments?
--- linux-ac10-clean/drivers/scsi/cpqfcTSinit.c Sun Nov 12 04:01:11 2000
+++ linux-ac10/drivers/scsi/cpqfcTSinit.c Sun Jan 21 23:39:23 2001
@@ -96,7 +96,7 @@
Name) are not necessary.
*/
-static void Cpqfc_initHBAdata( CPQFCHBA *cpqfcHBAdata, struct pci_dev *PciDev )
+static int Cpqfc_initHBAdata( CPQFCHBA *cpqfcHBAdata, struct pci_dev *PciDev )
{
cpqfcHBAdata->PciDev = PciDev; // copy PCI info ptr
@@ -115,6 +115,9 @@
cpqfcHBAdata->fcChip.Registers.ReMapMemBase =
ioremap( PciDev->base_address[3] & PCI_BASE_ADDRESS_MEM_MASK,
0x200);
+
+ if (!cpqfcHBAdata->fcChip.Registers.ReMapMemBase)
+ return 1;
cpqfcHBAdata->fcChip.Registers.RAMBase =
PciDev->base_address[4];
@@ -209,7 +212,7 @@
cpqfcHBAdata->fcChip.ReadWriteWWN = CpqTsReadWriteWWN;
cpqfcHBAdata->fcChip.ReadWriteNVRAM = CpqTsReadWriteNVRAM;
-
+ return 0;
}
@@ -329,8 +332,11 @@
cpqfcHBAdata->HBAnum = NumberOfAdapters;
cpqfcHBAdata->HostAdapter = HostAdapter; // back ptr
- Cpqfc_initHBAdata( cpqfcHBAdata, PciDev ); // fill MOST fields
-
+ if (!Cpqfc_initHBAdata( cpqfcHBAdata, PciDev )) { // fill MOST fields
+ printk(KERN_WARNING "Error initializing cpqfc data\n");
+ goto err_unregister;
+ }
+
cpqfcHBAdata->HBAnum = NumberOfAdapters;
@@ -342,33 +348,25 @@
HostAdapter) )
{
printk(" IRQ %u already used\n", HostAdapter->irq);
- scsi_unregister( HostAdapter);
- continue;
+ goto err_unmap;
}
// Since we have two 256-byte I/O port ranges (upper
- // and lower), check them both
- if( check_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff) )
+ // and lower), get them both
+ if(!request_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff, DEV_NAME) )
{
printk(" cpqfcTS address in use: %x\n",
cpqfcHBAdata->fcChip.Registers.IOBaseU);
- free_irq( HostAdapter->irq, HostAdapter);
- scsi_unregister( HostAdapter);
- continue;
+ goto err_free_irq;
}
- if( check_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff) )
+ if(!request_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff, DEV_NAME) )
{
printk(" cpqfcTS address in use: %x\n",
cpqfcHBAdata->fcChip.Registers.IOBaseL);
- free_irq( HostAdapter->irq, HostAdapter);
- scsi_unregister( HostAdapter);
- continue;
+ goto err_release_register;
}
- // OK, we should be able to grab everything we need now.
- request_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff, DEV_NAME);
- request_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff, DEV_NAME);
DEBUG_PCI(printk(" Requesting 255 I/O addresses @ %x\n",
cpqfcHBAdata->fcChip.Registers.IOBaseL ));
DEBUG_PCI(printk(" Requesting 255 I/O addresses @ %x\n",
@@ -419,6 +417,18 @@
}
NumberOfAdapters++;
+ continue;
+
+ err_release_register:
+ release_region(cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff);
+ err_free_irq:
+ free_irq( HostAdapter->irq, HostAdapter);
+ err_unmap:
+ iounmap(PciDev->base_address[3] & PCI_BASE_ADDRESS_MEM_MASK,
+ 0x200);
+ err_unregister:
+ scsi_unregister( HostAdapter);
+
} // end of while()
}
@@ -707,7 +717,7 @@
/* we get "vfree: bad address" executing this - need to investigate...
if( (void*)((unsigned long)cpqfcHBAdata->fcChip.Registers.MemBase) !=
cpqfcHBAdata->fcChip.Registers.ReMapMemBase)
- vfree( cpqfcHBAdata->fcChip.Registers.ReMapMemBase);
+ iounmap( cpqfcHBAdata->fcChip.Registers.ReMapMemBase);
*/
LEAVE("cpqfcTS_release");
--
Rasmus([EMAIL PROTECTED])
Are they taking DDT?
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(reported in Esquire, 8/92, and NY Post early May 92)
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