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[PATCH] DM9000 - better checks for platform resources

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The current DM9000 driver cannot cope if it
is given more than 3 resources (for example, if
it is being passed an wake-up irq that it is
not using yet).

Check that we have been given at-least one IRQ
resource.

Also fix the minor type-casting for the case
of 2 resources.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Ben Dooks 2006-06-13 23:47:19 +01:00 committed by Jeff Garzik
parent eb99adde31
commit b4ed03ff12
1 changed files with 6 additions and 11 deletions
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17
drivers/net/dm9000.c
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@ -410,10 +410,7 @@ dm9000_probe(struct platform_device *pdev)
if (pdev->num_resources < 2) {
ret = -ENODEV;
goto out;
}
switch (pdev->num_resources) {
case 2:
} else if (pdev->num_resources == 2) {
base = pdev->resource[0].start;
if (!request_mem_region(base, 4, ndev->name)) {
@ -423,17 +420,16 @@ dm9000_probe(struct platform_device *pdev)
ndev->base_addr = base;
ndev->irq = pdev->resource[1].start;
db->io_addr = (void *)base;
db->io_data = (void *)(base + 4);
db->io_addr = (void __iomem *)base;
db->io_data = (void __iomem *)(base + 4);
break;
case 3:
} else {
db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (db->addr_res == NULL || db->data_res == NULL) {
if (db->addr_res == NULL || db->data_res == NULL ||
db->irq_res == NULL) {
printk(KERN_ERR PFX "insufficient resources\n");
ret = -ENOENT;
goto out;
@ -482,7 +478,6 @@ dm9000_probe(struct platform_device *pdev)
/* ensure at least we have a default set of IO routines */
dm9000_set_io(db, iosize);
}
/* check to see if anything is being over-ridden */