Fix shadow variable warnings by:
- Renaming 'copy_mode' parameter to 'mode' in dma_parse_copy_mode()
- Removing 'nb_queues' parameter from port_init() and using the
  global variable directly, since it's always called with the
  global nb_queues value

../examples/dma/dmafwd.c:593:33: warning: declaration of 'copy_mode'
shadows a global declaration [-Wshadow]
../examples/dma/dmafwd.c:881:68: warning: declaration of 'nb_queues'
shadows a global declaration [-Wshadow]

Signed-off-by: Stephen Hemminger <[email protected]>
---
 examples/dma/dmafwd.c    | 10 +++++-----
 examples/dma/meson.build |  1 -
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/examples/dma/dmafwd.c b/examples/dma/dmafwd.c
index 5ba0aaa40b..a8ed09e6ae 100644
--- a/examples/dma/dmafwd.c
+++ b/examples/dma/dmafwd.c
@@ -590,11 +590,11 @@ dma_parse_portmask(const char *portmask)
 }
 
 static copy_mode_t
-dma_parse_copy_mode(const char *copy_mode)
+dma_parse_copy_mode(const char *mode)
 {
-       if (strcmp(copy_mode, COPY_MODE_SW) == 0)
+       if (strcmp(mode, COPY_MODE_SW) == 0)
                return COPY_MODE_SW_NUM;
-       else if (strcmp(copy_mode, COPY_MODE_DMA) == 0)
+       else if (strcmp(mode, COPY_MODE_DMA) == 0)
                return COPY_MODE_DMA_NUM;
 
        return COPY_MODE_INVALID_NUM;
@@ -878,7 +878,7 @@ config_port_max_pkt_len(struct rte_eth_conf *conf,
  * coming from the mbuf_pool passed as a parameter.
  */
 static inline void
-port_init(uint16_t portid, struct rte_mempool *mbuf_pool, uint16_t nb_queues)
+port_init(uint16_t portid, struct rte_mempool *mbuf_pool)
 {
        /* Configuring port to use RSS for multiple RX queues. 8< */
        static const struct rte_eth_conf port_conf = {
@@ -1061,7 +1061,7 @@ main(int argc, char **argv)
        /* Initialize each port. 8< */
        cfg.nb_ports = 0;
        RTE_ETH_FOREACH_DEV(portid)
-               port_init(portid, dma_pktmbuf_pool, nb_queues);
+               port_init(portid, dma_pktmbuf_pool);
        /* >8 End of initializing each port. */
 
        /* Initialize port xstats */
diff --git a/examples/dma/meson.build b/examples/dma/meson.build
index 6a65de127e..124f9476fc 100644
--- a/examples/dma/meson.build
+++ b/examples/dma/meson.build
@@ -13,4 +13,3 @@ deps += ['argparse', 'dmadev']
 sources = files(
         'dmafwd.c',
 )
-cflags += no_shadow_cflag
-- 
2.53.0

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