libertas: fix CF firmware loading for some cards

if_cs_poll_while_fw_download() returned the number of iterations
remaining on success, which in turn got returned as the value from
if_cs_prog_real() and if_cs_prog_helper().  But since if_cs_probe()
interprets non-zero return values from firmware load functions as an
error, this sometimes caused spurious firmware load failures.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Tested-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 842a08d..8f8934a 100644 (file)
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -151,7 +151,7 @@ static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 r
        for (i = 0; i < 100000; i++) {
                u8 val = if_cs_read8(card, addr);
                if (val == reg)
-                       return i;
+                       return 0;
                udelay(5);
        }
        return -ETIME;