mpt2sas, mpt3sas: Abort initialization if no memory I/O resources detected
Driver crashes if the BIOS do not set up at least one
memory I/O resource. This failure can happen if the device is too
slow to respond during POST and is missed by the BIOS, but Linux
then detects the device later in the boot process.
Based on a patch from Timothy Pearson <tpearson@raptorengineeringinc.com>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 14a781b..43f87e9 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -1843,7 +1843,8 @@
goto out_fail;
}
- for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
+ for (i = 0, memap_sz = 0, pio_sz = 0; (i < DEVICE_COUNT_RESOURCE) &&
+ (!memap_sz || !pio_sz); i++) {
if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
if (pio_sz)
continue;
@@ -1856,15 +1857,16 @@
chip_phys = (u64)ioc->chip_phys;
memap_sz = pci_resource_len(pdev, i);
ioc->chip = ioremap(ioc->chip_phys, memap_sz);
- if (ioc->chip == NULL) {
- pr_err(MPT3SAS_FMT "unable to map adapter memory!\n",
- ioc->name);
- r = -EINVAL;
- goto out_fail;
- }
}
}
+ if (ioc->chip == NULL) {
+ pr_err(MPT3SAS_FMT "unable to map adapter memory! "
+ " or resource not found\n", ioc->name);
+ r = -EINVAL;
+ goto out_fail;
+ }
+
_base_mask_interrupts(ioc);
r = _base_get_ioc_facts(ioc, CAN_SLEEP);