From: YueHaibing <yuehaibing@huawei.com> To: <heikki.krogerus@linux.intel.com>, <gregkh@linuxfoundation.org> Cc: <linux-kernel@vger.kernel.org>, <linux-usb@vger.kernel.org>, YueHaibing <yuehaibing@huawei.com> Subject: [PATCH -next] usb: typec: mux: Fix unsigned comparison with less than zero Date: Tue, 19 Feb 2019 14:57:50 +0800 [thread overview] Message-ID: <20190219065750.9004-1-yuehaibing@huawei.com> (raw) The return from the call to fwnode_property_read_u16_array is int, it can be a negative error code however this is being assigned to an size_t variable 'nval', hence the check is always false. Fix this by making 'nval' an int. Detected by Coccinelle ("Unsigned expression compared with zero: nval < 0") Fixes: 96a6d031ca99 ("usb: typec: mux: Find the muxes by also matching against the device node") Signed-off-by: YueHaibing <yuehaibing@huawei.com> --- drivers/usb/typec/mux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index a5947d9..54d7497 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -126,7 +126,7 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data) { const struct typec_altmode_desc *desc = data; struct typec_mux *mux; - size_t nval; + int nval; bool match; u16 *val; int i; -- 2.7.0
WARNING: multiple messages have this Message-ID (diff)
From: YueHaibing <yuehaibing@huawei.com> To: heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, YueHaibing <yuehaibing@huawei.com> Subject: [-next] usb: typec: mux: Fix unsigned comparison with less than zero Date: Tue, 19 Feb 2019 14:57:50 +0800 [thread overview] Message-ID: <20190219065750.9004-1-yuehaibing@huawei.com> (raw) The return from the call to fwnode_property_read_u16_array is int, it can be a negative error code however this is being assigned to an size_t variable 'nval', hence the check is always false. Fix this by making 'nval' an int. Detected by Coccinelle ("Unsigned expression compared with zero: nval < 0") Fixes: 96a6d031ca99 ("usb: typec: mux: Find the muxes by also matching against the device node") Signed-off-by: YueHaibing <yuehaibing@huawei.com> --- drivers/usb/typec/mux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index a5947d9..54d7497 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -126,7 +126,7 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data) { const struct typec_altmode_desc *desc = data; struct typec_mux *mux; - size_t nval; + int nval; bool match; u16 *val; int i;
next reply other threads:[~2019-02-19 6:58 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-02-19 6:57 YueHaibing [this message] 2019-02-19 6:57 ` [-next] usb: typec: mux: Fix unsigned comparison with less than zero YueHaibing 2019-02-19 7:48 ` [PATCH -next] " Heikki Krogerus 2019-02-19 7:48 ` [-next] " Heikki Krogerus
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