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extcon: usbc-tusb320: Call the Type-C IRQ handler only if a port is registered

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Commit bf7571c00d ("extcon: usbc-tusb320: Add USB TYPE-C support")
added an optional Type-C interface to the driver but missed to check
if it is in use when calling the IRQ handler. This causes an oops on
devices currently using the old extcon interface. Check if a Type-C
port is registered before calling the Type-C IRQ handler.

Fixes: bf7571c00d ("extcon: usbc-tusb320: Add USB TYPE-C support")
Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20221107153317.657803-1-y.oudjana@protonmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yassine Oudjana
2022-11-07 18:33:17 +03:00
committed by Greg Kroah-Hartman
parent 5c294de36e
commit 341fd15e2e
1 changed files with 7 additions and 1 deletions
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8
drivers/extcon/extcon-usbc-tusb320.c
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@@ -327,7 +327,13 @@ static irqreturn_t tusb320_irq_handler(int irq, void *dev_id)
return IRQ_NONE;
tusb320_extcon_irq_handler(priv, reg);
tusb320_typec_irq_handler(priv, reg);
/*
* Type-C support is optional. Only call the Type-C handler if a
* port had been registered previously.
*/
if (priv->port)
tusb320_typec_irq_handler(priv, reg);
regmap_write(priv->regmap, TUSB320_REG9, reg);