Hi
My story is very simply...
I applied the following patch:
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -698,8 +698,11 @@ static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (err)
goto err_host_alloc;
- for_each_isci_host(i, isci_host, pdev)
+ for_each_isci_host(i, isci_host, pdev) {
+ pr_err("(%d < %d) == %d\n",\
+ i, SCI_MAX_CONTROLLERS, (i < SCI_MAX_CONTROLLERS));
scsi_scan_host(to_shost(isci_host));
+ }
return 0;
--
1.8.3.1
Then I issued the command 'modprobe isci' on platform with two SCU controllers (Patsburg D or T chipset)
and received the following, very strange, output:
(0 < 2) == 1
(1 < 2) == 1
(2 < 2) == 1
Can anyone explain why (2 < 2) is true? Is it a gcc bug?
(The kernel was compiled using gcc version 4.8.2.)
Lukasz
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