5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans de Goede hdegoede@redhat.com
commit 683cd8259a9b883a51973511f860976db2550a6e upstream.
After commit 936e4d49ecbc ("Input: atkbd - skip ATKBD_CMD_GETID in translated mode") the keyboard on Dell XPS 13 9350 / 9360 / 9370 models has stopped working after a suspend/resume.
The problem appears to be that atkbd_probe() fails when called from atkbd_reconnect() on resume, which on systems where ATKBD_CMD_GETID is skipped can only happen by ATKBD_CMD_SETLEDS failing. ATKBD_CMD_SETLEDS failing because ATKBD_CMD_GETID was skipped is weird, but apparently that is what is happening.
Fix this by also skipping ATKBD_CMD_SETLEDS when skipping ATKBD_CMD_GETID.
Fixes: 936e4d49ecbc ("Input: atkbd - skip ATKBD_CMD_GETID in translated mode") Reported-by: Paul Menzel pmenzel@molgen.mpg.de Closes: https://lore.kernel.org/linux-input/0aa4a61f-c939-46fe-a572-08022e8931c7@mol... Closes: https://bbs.archlinux.org/viewtopic.php?pid=2146300 Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218424 Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2260517 Tested-by: Paul Menzel pmenzel@molgen.mpg.de Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede hdegoede@redhat.com Link: https://lore.kernel.org/r/20240126160724.13278-2-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/input/keyboard/atkbd.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
--- a/drivers/input/keyboard/atkbd.c +++ b/drivers/input/keyboard/atkbd.c @@ -761,7 +761,6 @@ static int atkbd_probe(struct atkbd *atk { struct ps2dev *ps2dev = &atkbd->ps2dev; unsigned char param[2]; - bool skip_getid;
/* * Some systems, where the bit-twiddling when testing the io-lines of the @@ -775,6 +774,11 @@ static int atkbd_probe(struct atkbd *atk "keyboard reset failed on %s\n", ps2dev->serio->phys);
+ if (atkbd_skip_getid(atkbd)) { + atkbd->id = 0xab83; + return 0; + } + /* * Then we check the keyboard ID. We should get 0xab83 under normal conditions. * Some keyboards report different values, but the first byte is always 0xab or @@ -783,18 +787,17 @@ static int atkbd_probe(struct atkbd *atk */
param[0] = param[1] = 0xa5; /* initialize with invalid values */ - skip_getid = atkbd_skip_getid(atkbd); - if (skip_getid || ps2_command(ps2dev, param, ATKBD_CMD_GETID)) { + if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
/* - * If the get ID command was skipped or failed, we check if we can at least set + * If the get ID command failed, we check if we can at least set * the LEDs on the keyboard. This should work on every keyboard out there. * It also turns the LEDs off, which we want anyway. */ param[0] = 0; if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) return -1; - atkbd->id = skip_getid ? 0xab83 : 0xabba; + atkbd->id = 0xabba; return 0; }