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authorVincent Palatin <vpalatin@chromium.org>2012-01-09 08:32:36 +0000
committerWolfgang Denk <wd@denx.de>2012-03-03 16:56:04 +0100
commite7e982d69c43b89f7e19b63479c8b2e880fbd75c (patch)
treed933f9627c7a94066118ad31d0b016c8556c1f1b /net/eth.c
parente159e4868ec1c289a7c167da681165e74308c92a (diff)
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eth: remove usb-ethernet devices before re-enumerating them
Fix the crash when running several times usb_init() with a USB ethernet device plugged. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Tested-by: Wolfgang Grandegger <wg@denx.de>
Diffstat (limited to 'net/eth.c')
-rw-r--r--net/eth.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/net/eth.c b/net/eth.c
index b4b9b43..3fb5fb6 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -224,6 +224,35 @@ int eth_register(struct eth_device *dev)
return 0;
}
+int eth_unregister(struct eth_device *dev)
+{
+ struct eth_device *cur;
+
+ /* No device */
+ if (!eth_devices)
+ return -1;
+
+ for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
+ cur = cur->next)
+ ;
+
+ /* Device not found */
+ if (cur->next != dev)
+ return -1;
+
+ cur->next = dev->next;
+
+ if (eth_devices == dev)
+ eth_devices = dev->next == eth_devices ? NULL : dev->next;
+
+ if (eth_current == dev) {
+ eth_current = eth_devices;
+ eth_current_changed();
+ }
+
+ return 0;
+}
+
int eth_initialize(bd_t *bis)
{
int num_devices = 0;