igb_uio: use macros for array size calculation

Minor code cleanup.
Remove array size calculations and remove unnecessary assignment.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index f5617d2..7091b6b 100644 (file)
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -58,7 +58,7 @@ struct rte_uio_pci_dev {
        enum rte_intr_mode mode;
 };
 
-static char *intr_mode = NULL;
+static char *intr_mode;
 static enum rte_intr_mode igbuio_intr_mode_preferred = RTE_INTR_MODE_MSIX;
 
 /* sriov sysfs */
@@ -332,7 +332,7 @@ igbuio_pci_setup_iomem(struct pci_dev *dev, struct uio_info *info,
        unsigned long addr, len;
        void *internal_addr;
 
-       if (sizeof(info->mem) / sizeof(info->mem[0]) <= n)
+       if (n >= ARRAY_SIZE(info->mem))
                return -EINVAL;
 
        addr = pci_resource_start(dev, pci_bar);
@@ -357,7 +357,7 @@ igbuio_pci_setup_ioport(struct pci_dev *dev, struct uio_info *info,
 {
        unsigned long addr, len;
 
-       if (sizeof(info->port) / sizeof(info->port[0]) <= n)
+       if (n >= ARRAY_SIZE(info->port))
                return -EINVAL;
 
        addr = pci_resource_start(dev, pci_bar);
@@ -402,7 +402,7 @@ igbuio_setup_bars(struct pci_dev *dev, struct uio_info *info)
        iom = 0;
        iop = 0;
 
-       for (i = 0; i != sizeof(bar_names) / sizeof(bar_names[0]); i++) {
+       for (i = 0; i < ARRAY_SIZE(bar_names); i++) {
                if (pci_resource_len(dev, i) != 0 &&
                                pci_resource_start(dev, i) != 0) {
                        flags = pci_resource_flags(dev, i);