stmmac: remove warning when compile as built-in (V2)

The patch removes the following serie of warnings
when the driver is compiled as built-in:

drivers/net/stmmac/stmmac_main.c: In function stmmac_cmdline_opt:
drivers/net/stmmac/stmmac_main.c:1855:12: warning: ignoring return
value of kstrtoul, declared with attribute warn_unused_result
[snip]

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
index 1002b55..40a6ae5 100644 (file)
--- a/drivers/net/stmmac/stmmac_main.c
+++ b/drivers/net/stmmac/stmmac_main.c
@@ -1917,33 +1917,52 @@ static int __init stmmac_cmdline_opt(char *str)
        if (!str || !*str)
                return -EINVAL;
        while ((opt = strsep(&str, ",")) != NULL) {
-               if (!strncmp(opt, "debug:", 6))
-                       strict_strtoul(opt + 6, 0, (unsigned long *)&debug);
-               else if (!strncmp(opt, "phyaddr:", 8))
-                       strict_strtoul(opt + 8, 0, (unsigned long *)&phyaddr);
-               else if (!strncmp(opt, "dma_txsize:", 11))
-                       strict_strtoul(opt + 11, 0,
-                                      (unsigned long *)&dma_txsize);
-               else if (!strncmp(opt, "dma_rxsize:", 11))
-                       strict_strtoul(opt + 11, 0,
-                                      (unsigned long *)&dma_rxsize);
-               else if (!strncmp(opt, "buf_sz:", 7))
-                       strict_strtoul(opt + 7, 0, (unsigned long *)&buf_sz);
-               else if (!strncmp(opt, "tc:", 3))
-                       strict_strtoul(opt + 3, 0, (unsigned long *)&tc);
-               else if (!strncmp(opt, "watchdog:", 9))
-                       strict_strtoul(opt + 9, 0, (unsigned long *)&watchdog);
-               else if (!strncmp(opt, "flow_ctrl:", 10))
-                       strict_strtoul(opt + 10, 0,
-                                      (unsigned long *)&flow_ctrl);
-               else if (!strncmp(opt, "pause:", 6))
-                       strict_strtoul(opt + 6, 0, (unsigned long *)&pause);
+               if (!strncmp(opt, "debug:", 6)) {
+                       if (strict_strtoul(opt + 6, 0, (unsigned long *)&debug))
+                               goto err;
+               } else if (!strncmp(opt, "phyaddr:", 8)) {
+                       if (strict_strtoul(opt + 8, 0,
+                                          (unsigned long *)&phyaddr))
+                               goto err;
+               } else if (!strncmp(opt, "dma_txsize:", 11)) {
+                       if (strict_strtoul(opt + 11, 0,
+                                          (unsigned long *)&dma_txsize))
+                               goto err;
+               } else if (!strncmp(opt, "dma_rxsize:", 11)) {
+                       if (strict_strtoul(opt + 11, 0,
+                                          (unsigned long *)&dma_rxsize))
+                               goto err;
+               } else if (!strncmp(opt, "buf_sz:", 7)) {
+                       if (strict_strtoul(opt + 7, 0,
+                                          (unsigned long *)&buf_sz))
+                               goto err;
+               } else if (!strncmp(opt, "tc:", 3)) {
+                       if (strict_strtoul(opt + 3, 0, (unsigned long *)&tc))
+                               goto err;
+               } else if (!strncmp(opt, "watchdog:", 9)) {
+                       if (strict_strtoul(opt + 9, 0,
+                                          (unsigned long *)&watchdog))
+                               goto err;
+               } else if (!strncmp(opt, "flow_ctrl:", 10)) {
+                       if (strict_strtoul(opt + 10, 0,
+                                          (unsigned long *)&flow_ctrl))
+                               goto err;
+               } else if (!strncmp(opt, "pause:", 6)) {
+                       if (strict_strtoul(opt + 6, 0, (unsigned long *)&pause))
+                               goto err;
 #ifdef CONFIG_STMMAC_TIMER
-               else if (!strncmp(opt, "tmrate:", 7))
-                       strict_strtoul(opt + 7, 0, (unsigned long *)&tmrate);
+               } else if (!strncmp(opt, "tmrate:", 7)) {
+                       if (strict_strtoul(opt + 7, 0,
+                                          (unsigned long *)&tmrate))
+                               goto err;
 #endif
+               }
        }
        return 0;
+
+err:
+       pr_err("%s: ERROR broken module parameter conversion", __func__);
+       return -EINVAL;
 }
 
 __setup("stmmaceth=", stmmac_cmdline_opt);