Dec 10 2009

RDMA/nes: Pass correct size to ioremap_nocache() 

Author: Julia Lawall <julia@diku.dk>

The size argument to ioremap_nocache should be the size of desired
information, not the pointer to it.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// 
@expression@
expression *x;
@@

x =
 <+...
*sizeof(x)
...+>// 

Signed-off-by: Julia Lawall 
Acked-by: Chien Tung 
Signed-off-by: Roland Dreier 

---
 drivers/infiniband/hw/nes/nes.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
 
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 88d3114..b9d09ba 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -521,7 +521,8 @@ static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_i
 	spin_lock_init(&nesdev->indexed_regs_lock);
 
 	/* Remap the PCI registers in adapter BAR0 to kernel VA space */
-	mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
+	mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
+				    pci_resource_len(pcidev, BAR_0));
 	if (mmio_regs == NULL) {
 		printk(KERN_ERR PFX "Unable to remap BAR0\n");
 		ret = -EIO;

qlambert