cxgb4vf: Fix sparse warnings

Fixes sparse warnings introduced in commit e85c9a7abfa407ed ("cxgb4/cxgb4vf: Add
code to calculate T5 BAR2 Offsets for SGE Queue Registers") and
df64e4d38c904dd3 ("cxgb4/cxgb4vf: Use new interfaces to calculate BAR2 SGE Queue
Register addresses") and few old ones

sparse warnings:
>> drivers/net/ethernet/chelsio/cxgb4vf/sge.c:1006:48: sparse: cast removes
>> address space of expression
>> drivers/net/ethernet/chelsio/cxgb4vf/sge.c:1006:48: sparse: incorrect type in
>> initializer (different address space)
>> drivers/net/ethernet/chelsio/cxgb4vf/sge.c:1020:40: sparse: incorrect type in
>> argument 1 (different base types)

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: kbuild test robot <fengguang.wu@intel.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/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
index 0545f0de1c52be282af53d6a5f03916f93ad7013..e0d711071afb7d6d80763666141477fb3dc4c479 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
@@ -1004,7 +1004,7 @@ static inline void ring_tx_db(struct adapter *adapter, struct sge_txq *tq,
                                              ? (tq->pidx - 1)
                                              : (tq->size - 1));
                        __be64 *src = (__be64 *)&tq->desc[index];
-                       __be64 __iomem *dst = (__be64 *)(tq->bar2_addr +
+                       __be64 __iomem *dst = (__be64 __iomem *)(tq->bar2_addr +
                                                         SGE_UDB_WCDOORBELL);
                        unsigned int count = EQ_UNIT / sizeof(__be64);
 
@@ -1018,7 +1018,11 @@ static inline void ring_tx_db(struct adapter *adapter, struct sge_txq *tq,
                         * DMA.
                         */
                        while (count) {
-                               writeq(*src, dst);
+                               /* the (__force u64) is because the compiler
+                                * doesn't understand the endian swizzling
+                                * going on
+                                */
+                               writeq((__force u64)*src, dst);
                                src++;
                                dst++;
                                count--;
@@ -1252,8 +1256,8 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev)
        BUG_ON(DIV_ROUND_UP(ETHTXQ_MAX_HDR, TXD_PER_EQ_UNIT) > 1);
        wr = (void *)&txq->q.desc[txq->q.pidx];
        wr->equiq_to_len16 = cpu_to_be32(wr_mid);
-       wr->r3[0] = cpu_to_be64(0);
-       wr->r3[1] = cpu_to_be64(0);
+       wr->r3[0] = cpu_to_be32(0);
+       wr->r3[1] = cpu_to_be32(0);
        skb_copy_from_linear_data(skb, (void *)wr->ethmacdst, fw_hdr_copy_len);
        end = (u64 *)wr + flits;
 

diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
index 1b5506df35b15ab74eaf1ecea220da4ad6278a3f..280b4a21584934f56fbcc24399dfd0cf5feb694e 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
@@ -210,10 +210,10 @@ int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size,
 
                        if (rpl) {
                                /* request bit in high-order BE word */
-                               WARN_ON((be32_to_cpu(*(const u32 *)cmd)
+                               WARN_ON((be32_to_cpu(*(const __be32 *)cmd)
                                         & FW_CMD_REQUEST_F) == 0);
                                get_mbox_rpl(adapter, rpl, size, mbox_data);
-                               WARN_ON((be32_to_cpu(*(u32 *)rpl)
+                               WARN_ON((be32_to_cpu(*(__be32 *)rpl)
                                         & FW_CMD_REQUEST_F) != 0);
                        }
                        t4_write_reg(adapter, mbox_ctl,
@@ -484,7 +484,7 @@ int t4_bar2_sge_qregs(struct adapter *adapter,
         *  o The BAR2 Queue ID.
         *  o The BAR2 Queue ID Offset into the BAR2 page.
         */
-       bar2_page_offset = ((qid >> qpp_shift) << page_shift);
+       bar2_page_offset = ((u64)(qid >> qpp_shift) << page_shift);
        bar2_qid = qid & qpp_mask;
        bar2_qid_offset = bar2_qid * SGE_UDB_SIZE;