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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2018-10-02 13:57:44 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-10-02 14:16:52 +0200 |
| commit | afc92514a34c7414b28047b1205a6b709103c699 (patch) | |
| tree | 89b77dcae3ad98f69ceda24552a38f114bcb5224 /drivers/usb | |
| parent | usb: dwc2: gadget: Add handler for WkupAlert interrupt (diff) | |
| download | linux-afc92514a34c7414b28047b1205a6b709103c699.tar.xz linux-afc92514a34c7414b28047b1205a6b709103c699.zip | |
usb: gadget: udc: renesas_usb3: Fix b-device mode for "workaround"
If the "workaround_for_vbus" is true, the driver will not call
usb_disconnect(). So, since the controller keeps some registers'
value, the driver doesn't re-enumarate suitable speed after
the b-device mode is disabled. To fix the issue, this patch
adds usb_disconnect() calling in renesas_usb3_b_device_write()
if workaround_for_vbus is true.
Fixes: 43ba968b00ea ("usb: gadget: udc: renesas_usb3: add debugfs to set the b-device mode")
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/udc/renesas_usb3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index e1656f361e08..67d8a501d994 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -2437,6 +2437,9 @@ static ssize_t renesas_usb3_b_device_write(struct file *file, else usb3->forced_b_device = false; + if (usb3->workaround_for_vbus) + usb3_disconnect(usb3); + /* Let this driver call usb3_connect() anyway */ usb3_check_id(usb3); |