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usb: dwc3: core: Fix tx/rx threshold settings

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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: 938a5ad1d3 ("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/cccfce990b11b730b0dae42f9d217dc6fb988c90.1649727139.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thinh Nguyen
2022-04-11 18:33:47 -07:00
committed by Greg Kroah-Hartman
parent 140801d3fb
commit 5fa59bb867
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/dwc3/core.c
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@@ -1277,10 +1277,10 @@ static void dwc3_get_properties(struct dwc3 *dwc)
u8 lpm_nyet_threshold; u8 lpm_nyet_threshold;
u8 tx_de_emphasis; u8 tx_de_emphasis;
u8 hird_threshold; u8 hird_threshold;
u8 rx_thr_num_pkt_prd; u8 rx_thr_num_pkt_prd = 0;
u8 rx_max_burst_prd; u8 rx_max_burst_prd = 0;
u8 tx_thr_num_pkt_prd; u8 tx_thr_num_pkt_prd = 0;
u8 tx_max_burst_prd; u8 tx_max_burst_prd = 0;
/* default to highest possible threshold */ /* default to highest possible threshold */
lpm_nyet_threshold = 0xf; lpm_nyet_threshold = 0xf;