Messages in this thread Patch in this message | | | From | Colin King <> | Subject | [PATCH] usb: typec: wcove: fix uninitialized usbc_irq1 and usbc_irq2 | Date | Wed, 11 Oct 2017 10:09:57 +0100 |
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From: Colin Ian King <colin.king@canonical.com>
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> --- drivers/usb/typec/typec_wcove.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/typec/typec_wcove.c b/drivers/usb/typec/typec_wcove.c index a47a93ad34b7..4ce30a967962 100644 --- a/drivers/usb/typec/typec_wcove.c +++ b/drivers/usb/typec/typec_wcove.c @@ -441,8 +441,8 @@ static int wcove_read_rx_buffer(struct wcove_typec *wcove, void *msg) static irqreturn_t wcove_typec_irq(int irq, void *data) { struct wcove_typec *wcove = data; - unsigned int usbc_irq1; - unsigned int usbc_irq2; + unsigned int usbc_irq1 = 0; + unsigned int usbc_irq2 = 0; unsigned int cc1ctrl; int ret; -- 2.14.1
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