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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-02-23 09:30:09 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-02-23 09:35:33 -0800 |
| commit | 1bff77f41a805b16b5355497c217656711601282 (patch) | |
| tree | 2f6ca9678fa0ec70b9975a0438ca49bcbb7564a6 /drivers | |
| parent | cbecf716ca618fd44feda6bd9a64a8179d031fc5 (diff) | |
| download | linux-1bff77f41a805b16b5355497c217656711601282.tar.gz | |
Input: st1232 - fix NORMAL vs. IDLE state handling
NORMAL (0x0) and IDLE (0x4) are really two different states. Hence you
cannot check for both using a bitmask, as that checks for IDLE only,
breaking operation for devices that are in NORMAL state.
Fix the wait function to report either state as ready.
Fixes: 6524d8eac258452e ("Input: st1232 - add IDLE state as ready condition")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210223090201.1430542-1-geert+renesas@glider.be
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/st1232.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index 885f0572488d..6abae665ca71 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -94,8 +94,13 @@ static int st1232_ts_wait_ready(struct st1232_ts_data *ts) for (retries = 10; retries; retries--) { error = st1232_ts_read_data(ts, REG_STATUS, 1); - if (!error && ts->read_buf[0] == (STATUS_NORMAL | STATUS_IDLE | ERROR_NONE)) - return 0; + if (!error) { + switch (ts->read_buf[0]) { + case STATUS_NORMAL | ERROR_NONE: + case STATUS_IDLE | ERROR_NONE: + return 0; + } + } usleep_range(1000, 2000); } |