cxgb4: Fix t4_flash_erase_sectors() to throw an error when requested to erase sectors...

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 7d4cc28..586a5f1 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -1099,6 +1099,9 @@ static int t4_flash_erase_sectors(struct adapter *adapter, int start, int end)
 {
        int ret = 0;
 
+       if (end >= adapter->params.sf_nsec)
+               return -EINVAL;
+
        while (start <= end) {
                if ((ret = sf1_write(adapter, 1, 0, 1, SF_WR_ENABLE)) != 0 ||
                    (ret = sf1_write(adapter, 4, 0, 1,