moonjuice/kernel_arpi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
commit 341fd15e2e18c24d5c738496cfc3d7a272241201 upstream.

Commit bf7571c00dca ("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: bf7571c00dca ("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 2471a44769
commit 408dbaa065
1 changed files with 7 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/extcon/extcon-usbc-tusb320.c
View File

@@ -327,7 +327,13 @@ static irqreturn_t tusb320_state_update_handler(struct tusb320_priv *priv,
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);