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qed: fix link config error handling

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gcc-8 notices that qed_mcp_get_transceiver_data() may fail to
return a result to the caller:

drivers/net/ethernet/qlogic/qed/qed_mcp.c: In function 'qed_mcp_trans_speed_mask':
drivers/net/ethernet/qlogic/qed/qed_mcp.c:1955:2: error: 'transceiver_type' may be used uninitialized in this function [-Werror=maybe-uninitialized]

When an error is returned by qed_mcp_get_transceiver_data(), we
should propagate that to the caller of qed_mcp_trans_speed_mask()
rather than continuing with uninitialized data.

Fixes: c56a8be7e7 ("qed: Add supported link and advertise link to display in ethtool.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2018-11-02 16:36:24 +01:00 committed by David S. Miller
parent e8ccbb7d2f
commit 9261921052
1 changed files with 5 additions and 2 deletions
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7
drivers/net/ethernet/qlogic/qed/qed_mcp.c
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@ -1944,9 +1944,12 @@ int qed_mcp_trans_speed_mask(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt, u32 *p_speed_mask)
{
u32 transceiver_type, transceiver_state;
int ret;
qed_mcp_get_transceiver_data(p_hwfn, p_ptt, &transceiver_state,
&transceiver_type);
ret = qed_mcp_get_transceiver_data(p_hwfn, p_ptt, &transceiver_state,
&transceiver_type);
if (ret)
return ret;
if (qed_is_transceiver_ready(transceiver_state, transceiver_type) ==
false)