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fotg210-udc: Mask GRP2 interrupts we don't handle 

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: b84a8dee23 ("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>
This commit is contained in:
Fabian Vogt 2021-03-24 15:11:12 +01:00 committed by Greg Kroah-Hartman
parent c7f755b243
commit 9aee3a23d6
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/gadget/udc/fotg210-udc.c
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@ -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);