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authorBen Dooks <ben-linux@fluff.org>2006-06-13 23:47:19 +0100
committerJeff Garzik <jeff@garzik.org>2006-06-26 22:01:53 -0400
commitb4ed03ff12e4bf228aaf15b2a364134348ebe8a9 (patch)
treec7b678d6be2e316064aa505fed0352f994454d89 /drivers/net/dm9000.c
parenteb99adde31b7d85c67a5e1c2fa5e098e1056dd79 (diff)
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[PATCH] DM9000 - better checks for platform resources
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>
Diffstat (limited to 'drivers/net/dm9000.c')
-rw-r--r--drivers/net/dm9000.c17
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 24996da..631e0d9 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -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);
-
- break;
+ db->io_addr = (void __iomem *)base;
+ db->io_data = (void __iomem *)(base + 4);
- 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 */
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