usb: typec: wcove: fix uninitialized usbc_irq1 and usbc_irq2
commit707a123d7affbf1e98f08d1962d81a0d64f83191
authorColin Ian King <colin.king@canonical.com>
Wed, 11 Oct 2017 09:09:57 +0000 (11 10:09 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 17 Oct 2017 09:56:12 +0000 (17 11:56 +0200)
tree70ac94a4ecfcf46408d71b520dd26c64a0be38a7
parenta6d5d230e0c2dbc710d473105d5652d3980da673
usb: typec: wcove: fix uninitialized usbc_irq1 and usbc_irq2

Calls to regmap_read may fail with an -EINVAL return without setting
usbc_irq1 and usbc_irq2.  The error handling clean up expects these
to have been set (or zero on a failure) and currently may try to
clear the wrong IRQs if the uninitalized garbage values in usbc_irq1
or usbc_irq2 are non-zero.  The simplest fix is to ensure these
variables are initialized to zero.

Detected by CoverityScan, CID#1457737 ("Uninitialized scalar variable")

Fixes: 3c4fb9f16921 ("usb: typec: wcove: start using tcpm for USB PD support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/typec/typec_wcove.c