This is a note to let you know that I've just added the patch titled mfd: omap-usb-tll: Fix inverted bit use for USB TLL mode to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mfd-omap-usb-tll-fix-inverted-bit-use-for-usb-tll-mode.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 8b8a84c54aff4256d592dc18346c65ecf6811b45 Mon Sep 17 00:00:00 2001 From: Tony Lindgren <tony@xxxxxxxxxxx> Date: Sat, 15 Apr 2017 10:05:08 -0700 Subject: mfd: omap-usb-tll: Fix inverted bit use for USB TLL mode From: Tony Lindgren <tony@xxxxxxxxxxx> commit 8b8a84c54aff4256d592dc18346c65ecf6811b45 upstream. Commit 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver") added support for USB TLL, but uses OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF bit the wrong way. The comments in the code are correct, but the inverted use of OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF causes the register to be enabled instead of disabled unlike what the comments say. Without this change the Wrigley 3G LTE modem on droid 4 EHCI bus can be only pinged few times before it stops responding. Fixes: 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver") Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> Acked-by: Roger Quadros <rogerq@xxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mfd/omap-usb-tll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mfd/omap-usb-tll.c +++ b/drivers/mfd/omap-usb-tll.c @@ -377,8 +377,8 @@ int omap_tll_init(struct usbhs_omap_plat * and use SDR Mode */ reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE - | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE); + reg |= OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF; } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_HSIC) { /* Patches currently in stable-queue which might be from tony@xxxxxxxxxxx are queue-4.9/mfd-omap-usb-tll-fix-inverted-bit-use-for-usb-tll-mode.patch queue-4.9/usb-musb-dsps-keep-vbus-on-for-host-only-mode.patch