From: Shannon Nelson <snelson@xxxxxxxxxxx>
[ Upstream commit f85ae16f924f92a370b81b4e77862c1c59882fce ]
Use an offset to write the second half of the regs data into the
second half of the buffer instead of overwriting the first half.
Fixes: 4d03e00a2140 ("ionic: Add initial ethtool support")
Signed-off-by: Shannon Nelson <snelson@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/pensando/ionic/ionic_ethtool.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index 7d10265f782a6..5aacc00962df7 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -102,15 +102,18 @@ static void ionic_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
void *p)
{
struct ionic_lif *lif = netdev_priv(netdev);
+ unsigned int offset;
unsigned int size;
regs->version = IONIC_DEV_CMD_REG_VERSION;
+ offset = 0;
size = IONIC_DEV_INFO_REG_COUNT * sizeof(u32);
- memcpy_fromio(p, lif->ionic->idev.dev_info_regs->words, size);
+ memcpy_fromio(p + offset, lif->ionic->idev.dev_info_regs->words, size);
+ offset += size;
size = IONIC_DEV_CMD_REG_COUNT * sizeof(u32);
- memcpy_fromio(p, lif->ionic->idev.dev_cmd_regs->words, size);
+ memcpy_fromio(p + offset, lif->ionic->idev.dev_cmd_regs->words, size);
}
static int ionic_get_link_ksettings(struct net_device *netdev,
--
2.25.1
