Input: qt1050 - handle CHIP_ID reading error
[ Upstream commit 866a5c7e2781cf1b019072288f1f5c64186dcb63 ] If the device is missing, we get the following error: qt1050 3-0041: ID -1340767592 not supported Let's handle this situation and print more informative error when reading of CHIP_ID fails: qt1050 3-0041: Failed to read chip ID: -6 Fixes: cbebf5addec1 ("Input: qt1050 - add Microchip AT42QT1050 support") Signed-off-by: Andrei Lalaev <andrei.lalaev@anton-paar.com> Reviewed-by: Marco Felsch <m.felsch@pengutronix.de> Link: https://lore.kernel.org/r/20240617183018.916234-1-andrey.lalaev@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -226,7 +226,12 @@ static bool qt1050_identify(struct qt1050_priv *ts)
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int err;
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/* Read Chip ID */
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regmap_read(ts->regmap, QT1050_CHIP_ID, &val);
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err = regmap_read(ts->regmap, QT1050_CHIP_ID, &val);
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if (err) {
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dev_err(&ts->client->dev, "Failed to read chip ID: %d\n", err);
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return false;
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}
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if (val != QT1050_CHIP_ID_VER) {
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dev_err(&ts->client->dev, "ID %d not supported\n", val);
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return false;
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