raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-27 12:32:50 +00:00
Code Issues Projects Releases Wiki Activity

usb: gadget: udc: renesas_usb3: disable the controller's irqs for reconnecting

Browse Source 
commit bd6bce004d upstream.

This patch fixes an issue that reconnection is possible to fail
because unexpected state handling happens by the irqs. To fix the issue,
the driver disables the controller's irqs when disconnected.

Fixes: 746bfe63bb ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Cc: <stable@vger.kernel.org> # v4.5+
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda
2018-04-10 14:38:54 +09:00
committed by Greg Kroah-Hartman
parent a1b6b51fab
commit cde4abc367
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/gadget/udc/renesas_usb3.c
View File

@@ -623,6 +623,13 @@ static void usb3_disconnect(struct renesas_usb3 *usb3)
usb3_usb2_pullup(usb3, 0);
usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
usb3_reset_epc(usb3);
usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM | USB_INT_1_B3_PLLWKUP |
USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE |
USB_INT_1_SPEED | USB_INT_1_B3_WRMRST |
USB_INT_1_B3_HOTRST | USB_INT_1_B2_SPND |
USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST);
usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
usb3_init_epc_registers(usb3);
if (usb3->driver)
usb3->driver->disconnect(&usb3->gadget);