From: Thinh Nguyen Thinh.Nguyen@synopsys.com
commit f28ad9069363dec7deb88032b70612755eed9ee6 upstream.
The current driver logic checks against 0 to determine whether the periodic tx/rx threshold settings are set, but we may get bogus values from uninitialized variables if no device property is set. Properly default these variables to 0.
Fixes: 938a5ad1d305 ("usb: dwc3: Check for ESS TX/RX threshold config") Cc: stable@vger.kernel.org Signed-off-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Link: https://lore.kernel.org/r/cccfce990b11b730b0dae42f9d217dc6fb988c90.164972713... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc3/core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1277,10 +1277,10 @@ static void dwc3_get_properties(struct d u8 lpm_nyet_threshold; u8 tx_de_emphasis; u8 hird_threshold; - u8 rx_thr_num_pkt_prd; - u8 rx_max_burst_prd; - u8 tx_thr_num_pkt_prd; - u8 tx_max_burst_prd; + u8 rx_thr_num_pkt_prd = 0; + u8 rx_max_burst_prd = 0; + u8 tx_thr_num_pkt_prd = 0; + u8 tx_max_burst_prd = 0;
/* default to highest possible threshold */ lpm_nyet_threshold = 0xf;