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The vendor HSIC host driver never applies this workaround on the HSIC instances and leaves the bit at its power-on default (set), so clearing it makes the HSIC instance diverge from the known-working configuration. Skip the workaround for HSIC instances, like the neighbouring GENCONFIG_2 write already does. Fixes: 47654a162081 ("usb: chipidea: msm: Restore wrapper settings after reset") Assisted-by: Claude:claude-fable-5 Signed-off-by: Dmitry Baryshkov --- drivers/usb/chipidea/ci_hdrc_msm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c index 9a9410a814e5..69be194f8e27 100644 --- a/drivers/usb/chipidea/ci_hdrc_msm.c +++ b/drivers/usb/chipidea/ci_hdrc_msm.c @@ -108,8 +108,9 @@ static int ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) hw_write_id_reg(ci, HS_PHY_AHB_MODE, 0xffffffff, 0x8); /* workaround for rx buffer collision issue */ - hw_write_id_reg(ci, HS_PHY_GENCONFIG, - HS_PHY_TXFIFO_IDLE_FORCE_DIS, 0); + if (!msm_ci->hsic) + hw_write_id_reg(ci, HS_PHY_GENCONFIG, + HS_PHY_TXFIFO_IDLE_FORCE_DIS, 0); if (!msm_ci->hsic) hw_write_id_reg(ci, HS_PHY_GENCONFIG_2, -- 2.47.3