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Commit 3ca5de6d authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: i8042 - another attempt to fix AUX delivery checks 



Do not assume that AUX_LOOP command is broken unless it
completes successfully but returns wrong (unexpected) data.

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 62b529a7

drivers/input/serio/i8042.c

+8 −2
Original line number Diff line number Diff line
@@ -553,7 +553,8 @@ static int __devinit i8042_check_aux(void) 
 */



	param = 0x5a;

	if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != 0x5a) {

	retval = i8042_command(&param, I8042_CMD_AUX_LOOP);

	if (retval || param != 0x5a) {



/*

 * External connection test - filters out AT-soldered PS/2 i8042's
@@ -567,6 +568,11 @@ static int __devinit i8042_check_aux(void) 
		    (param && param != 0xfa && param != 0xff))

			return -1;



/*

 * If AUX_LOOP completed without error but returned unexpected data

 * mark it as broken

 */

		if (!retval)

			aux_loop_broken = 1;

	}