diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2019-07-26 15:05:30 +1000 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2019-08-12 08:54:48 +0300 |
| commit | 9fbbeb4eff076859891c022c151ad20eda83d983 (patch) | |
| tree | baa556350f3b847e4a293276b0166784c67b8da1 /drivers/usb/gadget | |
| parent | 240b65dc1e89dd83d0c4946f58e49e7ee669b25d (diff) | |
| download | linux-9fbbeb4eff076859891c022c151ad20eda83d983.tar.bz2 | |
usb: gadget: aspeed: Don't set port enable change bit on reset
This bit should be only set when the port enable goes down, for
example, on errors. Not when it gets set after a port reset. Some
USB stacks seem to be sensitive to this and fails enumeration.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/udc/aspeed-vhub/hub.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c index 7c040f56100e..0755115fd90d 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c @@ -449,8 +449,15 @@ static void ast_vhub_change_port_stat(struct ast_vhub *vhub, USB_PORT_STAT_C_OVERCURRENT | USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_L1; - p->change |= chg; + /* + * We only set USB_PORT_STAT_C_ENABLE if we are disabling + * the port as per USB spec, otherwise MacOS gets upset + */ + if (p->status & USB_PORT_STAT_ENABLE) + chg &= ~USB_PORT_STAT_C_ENABLE; + + p->change = chg; ast_vhub_update_hub_ep1(vhub, port); } } |