usb: early: ehci-dbgp: Remove set but never checked variable 'ret'

'ret' hasn't  been checked since the driver's inception in 2009.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/early/ehci-dbgp.c: In function ‘early_dbgp_write’:
 drivers/usb/early/ehci-dbgp.c:915:13: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
 915 | int chunk, ret;
 | ^~~

Cc: Sumit Garg <sumit.garg@linaro.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lore.kernel.org/r/20200706133341.476881-26-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index 775cf70..b075dbf 100644 (file)
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -912,7 +912,7 @@ int __init early_dbgp_init(char *s)
 
 static void early_dbgp_write(struct console *con, const char *str, u32 n)
 {
-       int chunk, ret;
+       int chunk;
        char buf[DBGP_MAX_PACKET];
        int use_cr = 0;
        u32 cmd, ctrl;
@@ -951,8 +951,8 @@ static void early_dbgp_write(struct console *con, const char *str, u32 n)
                        buf[chunk] = *str;
                }
                if (chunk > 0) {
-                       ret = dbgp_bulk_write(USB_DEBUG_DEVNUM,
-                                     dbgp_endpoint_out, buf, chunk);
+                       dbgp_bulk_write(USB_DEBUG_DEVNUM,
+                                       dbgp_endpoint_out, buf, chunk);
                }
        }
        if (unlikely(reset_run)) {