diff options
| author | Xu Yang <xu.yang_2@nxp.com> | 2024-08-23 15:38:32 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-17 15:24:19 +0200 |
| commit | 01ac64e0926101698ab1147ffe1aca9fedc2544b (patch) | |
| tree | 859940a65406a25ca7e7a6483dcb988c070ca987 /drivers/usb | |
| parent | b72bf5cade51ba4055c8a8998d275e72e6b521ce (diff) | |
| download | linux-01ac64e0926101698ab1147ffe1aca9fedc2544b.tar.gz linux-01ac64e0926101698ab1147ffe1aca9fedc2544b.tar.bz2 linux-01ac64e0926101698ab1147ffe1aca9fedc2544b.zip | |
usb: chipidea: udc: enable suspend interrupt after usb reset
[ Upstream commit e4fdcc10092fb244218013bfe8ff01c55d54e8e4 ]
Currently, suspend interrupt is enabled before pullup enable operation.
This will cause a suspend interrupt assert right after pullup DP. This
suspend interrupt is meaningless, so this will ignore such interrupt
by enable it after usb reset completed.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20240823073832.1702135-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 0b7bd3c643c3..f70ceedfb468 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -86,7 +86,7 @@ static int hw_device_state(struct ci_hdrc *ci, u32 dma) hw_write(ci, OP_ENDPTLISTADDR, ~0, dma); /* interrupt, error, port change, reset, sleep/suspend */ hw_write(ci, OP_USBINTR, ~0, - USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI); + USBi_UI|USBi_UEI|USBi_PCI|USBi_URI); } else { hw_write(ci, OP_USBINTR, ~0, 0); } @@ -876,6 +876,7 @@ __releases(ci->lock) __acquires(ci->lock) { int retval; + u32 intr; spin_unlock(&ci->lock); if (ci->gadget.speed != USB_SPEED_UNKNOWN) @@ -889,6 +890,11 @@ __acquires(ci->lock) if (retval) goto done; + /* clear SLI */ + hw_write(ci, OP_USBSTS, USBi_SLI, USBi_SLI); + intr = hw_read(ci, OP_USBINTR, ~0); + hw_write(ci, OP_USBINTR, ~0, intr | USBi_SLI); + ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC); if (ci->status == NULL) retval = -ENOMEM; |