Input: i8042 - add dbg msg when a command can't write its parameter

This can happen in cases like bug #102951[1], so add a proper debug msg
as done in wait_read. Also, change wait_read debug message to differ from
wait_write.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=102951

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 62685a768913..c52da651269b 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -312,8 +312,10 @@ static int __i8042_command(unsigned char *param, int command)
 
         for (i = 0; i < ((command >> 12) & 0xf); i++) {
                 error = i8042_wait_write();
-                if (error)
+                if (error) {
+                        dbg("     -- i8042 (wait write timeout)\n");
                         return error;
+                }
                 dbg("%02x -> i8042 (parameter)\n", param[i]);
                 i8042_write_data(param[i]);
         }
@@ -321,7 +323,7 @@ static int __i8042_command(unsigned char *param, int command)
         for (i = 0; i < ((command >> 8) & 0xf); i++) {
                 error = i8042_wait_read();
                 if (error) {
-                        dbg("     -- i8042 (timeout)\n");
+                        dbg("     -- i8042 (wait read timeout)\n");
                         return error;
                 }