| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.11 203/601] fotg210-udc: Mask GRP2 interrupts we dont handle | Date | Wed, 12 May 2021 16:44:40 +0200 |
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From: Fabian Vogt <fabian@ritter-vogt.de>
[ Upstream commit 9aee3a23d6455200702f3a57e731fa11e8408667 ]
Currently it leaves unhandled interrupts unmasked, but those are never acked. In the case of a "device idle" interrupt, this leads to an effectively frozen system until plugging it in.
Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver") Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de> Link: https://lore.kernel.org/r/20210324141115.9384-5-fabian@ritter-vogt.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/usb/gadget/udc/fotg210-udc.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c index a3ad93bfd256..bbcc92376307 100644 --- a/drivers/usb/gadget/udc/fotg210-udc.c +++ b/drivers/usb/gadget/udc/fotg210-udc.c @@ -1026,6 +1026,12 @@ static void fotg210_init(struct fotg210_udc *fotg210) value &= ~DMCR_GLINT_EN; iowrite32(value, fotg210->reg + FOTG210_DMCR); + /* enable only grp2 irqs we handle */ + iowrite32(~(DISGR2_DMA_ERROR | DISGR2_RX0BYTE_INT | DISGR2_TX0BYTE_INT + | DISGR2_ISO_SEQ_ABORT_INT | DISGR2_ISO_SEQ_ERR_INT + | DISGR2_RESM_INT | DISGR2_SUSP_INT | DISGR2_USBRST_INT), + fotg210->reg + FOTG210_DMISGR2); + /* disable all fifo interrupt */ iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1); -- 2.30.2
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