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authorLinus Walleij <linus.walleij@linaro.org>2020-12-01 20:55:29 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2020-12-01 20:58:43 +0300
commit8c3b55a299c325830a987de21dab6a89ecb71164 (patch)
tree895d359aeb97a8c166d9c61c09ef9f81fe0e6bcd /drivers/input
parent2aab1561439032be2e98811dd0ddbeb5b2ae4c61 (diff)
downloadlinux-8c3b55a299c325830a987de21dab6a89ecb71164.tar.xz
Input: atmel_mxt_ts - fix lost interrupts
After commit 74d905d2d38a devices requiring the workaround for edge triggered interrupts stopped working. The hardware needs the quirk to be used before even proceeding to check if the quirk is needed because mxt_acquire_irq() is called before mxt_check_retrigen() is called and at this point pending IRQs need to be checked, and if the workaround is not active, all interrupts will be lost from this point. Solve this by switching the calls around. Reported-by: Andre Müller <andre.muller@web.de> Tested-by: Andre Müller <andre.muller@web.de> Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Fixes: 74d905d2d38a ("Input: atmel_mxt_ts - only read messages in mxt_acquire_irq() when necessary") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201201123026.1416743-1-linus.walleij@linaro.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 6b71b0aff115..99a33cd5e675 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -2183,11 +2183,11 @@ static int mxt_initialize(struct mxt_data *data)
msleep(MXT_FW_RESET_TIME);
}
- error = mxt_acquire_irq(data);
+ error = mxt_check_retrigen(data);
if (error)
return error;
- error = mxt_check_retrigen(data);
+ error = mxt_acquire_irq(data);
if (error)
return error;