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authorJeff Garzik <jeff@garzik.org>2006-12-03 20:49:23 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-12-05 10:25:35 -0600
commit00769ec40074b753c9b218c2ccaba2bfbfffe056 (patch)
treeb8a05cbdb85f7c4ca8e4368b74a66dfccc3a7b8d /drivers/scsi/megaraid.c
parente42ebefee15894522f3a84045887573ebc9b764e (diff)
downloadlinux-00769ec40074b753c9b218c2ccaba2bfbfffe056.tar.bz2
[SCSI] megaraid: fix MMIO casts
megaraid's MMIO RD*/WR* macros directly call readl() and writel() with an 'unsigned long' argument. This throws a warning, but is otherwise OK because the 'unsigned long' is really the result of ioremap(). This setup is also OK because the variable can hold an ioremap cookie /or/ a PCI I/O port (PIO). However, to fix the warning thrown when readl() and writel() are passed an unsigned long cookie, I introduce 'void __iomem *mmio_base', holding the same value as 'base'. This will silence the warnings, and also cause an oops whenever these MMIO-only functions are ever accidentally passed an I/O address. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/megaraid.c')
-rw-r--r--drivers/scsi/megaraid.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 86099fde1b2a..77d9d3804ccf 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -73,10 +73,10 @@ static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
module_param(max_mbox_busy_wait, ushort, 0);
MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
-#define RDINDOOR(adapter) readl((adapter)->base + 0x20)
-#define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
-#define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
-#define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
+#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
+#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
+#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
+#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
/*
* Global variables
@@ -1386,7 +1386,8 @@ megaraid_isr_memmapped(int irq, void *devp)
handled = 1;
- while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
+ while( RDINDOOR(adapter) & 0x02 )
+ cpu_relax();
mega_cmd_done(adapter, completed, nstatus, status);
@@ -4668,6 +4669,8 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
host->host_no, mega_baseport, irq);
adapter->base = mega_baseport;
+ if (flag & BOARD_MEMMAP)
+ adapter->mmio_base = (void __iomem *) mega_baseport;
INIT_LIST_HEAD(&adapter->free_list);
INIT_LIST_HEAD(&adapter->pending_list);