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authorSreekanth Reddy <sreekanth.reddy@avagotech.com>2015-07-15 06:49:56 +0200
committerJames Bottomley <JBottomley@Odin.com>2015-08-26 19:56:35 +0200
commit5aeeb78aeb4c8607cbda54a7b0dc7315171e214f (patch)
tree2fc3e772b1ab8bd503c3f9cfa019367bdef6e6ec
parentqla2xxx: Avoid that sparse complains about context imbalances (diff)
downloadlinux-5aeeb78aeb4c8607cbda54a7b0dc7315171e214f.tar.xz
linux-5aeeb78aeb4c8607cbda54a7b0dc7315171e214f.zip
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>
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.c16
-rw-r--r--drivers/scsi/mpt3sas/mpt3sas_base.c16
2 files changed, 18 insertions, 14 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 11248de92b3b..6dec7cff316f 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1557,7 +1557,8 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
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;
@@ -1572,16 +1573,17 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
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) {
- printk(MPT2SAS_ERR_FMT "unable to map "
- "adapter memory!\n", ioc->name);
- r = -EINVAL;
- goto out_fail;
- }
}
}
}
+ if (ioc->chip == NULL) {
+ printk(MPT2SAS_ERR_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);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 14a781b6b88d..43f87e904b98 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -1843,7 +1843,8 @@ mpt3sas_base_map_resources(struct MPT3SAS_ADAPTER *ioc)
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 @@ mpt3sas_base_map_resources(struct MPT3SAS_ADAPTER *ioc)
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);