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dm: eth: Test 'ethrotate' before changing current ethernet device

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In eth_current_changed(), the call to eth_get_dev() below has a side
effect of rotating ethernet device if uc_priv->current == NULL. This
is not what we want when 'ethrotate' variable is 'no'.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2015-12-21 22:43:38 -08:00 committed by Simon Glass
parent e7cc8d11ad
commit a671c4f2be
1 changed files with 11 additions and 0 deletions
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11
net/eth.c
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@ -1039,6 +1039,17 @@ int eth_receive(void *packet, int length)
static void eth_current_changed(void)
{
char *act = getenv("ethact");
char *ethrotate;
/*
* The call to eth_get_dev() below has a side effect of rotating
* ethernet device if uc_priv->current == NULL. This is not what
* we want when 'ethrotate' variable is 'no'.
*/
ethrotate = getenv("ethrotate");
if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
return;
/* update current ethernet name */
if (eth_get_dev()) {
if (act == NULL || strcmp(act, eth_get_name()) != 0)