diff options
Diffstat (limited to 'target/linux/socfpga/patches-4.4/0002-usb-dwc2-gadget-Repair-DSTS-register-decoding.patch')
-rw-r--r-- | target/linux/socfpga/patches-4.4/0002-usb-dwc2-gadget-Repair-DSTS-register-decoding.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/socfpga/patches-4.4/0002-usb-dwc2-gadget-Repair-DSTS-register-decoding.patch b/target/linux/socfpga/patches-4.4/0002-usb-dwc2-gadget-Repair-DSTS-register-decoding.patch new file mode 100644 index 0000000000..9be3834055 --- /dev/null +++ b/target/linux/socfpga/patches-4.4/0002-usb-dwc2-gadget-Repair-DSTS-register-decoding.patch @@ -0,0 +1,36 @@ +From e5cbd23e4f40181c907a1abc136b17de8cb86809 Mon Sep 17 00:00:00 2001 +From: Marek Vasut <marex@denx.de> +Date: Thu, 17 Dec 2015 23:42:35 +0100 +Subject: [PATCH 2/5] usb: dwc2: gadget: Repair DSTS register decoding + +The "enumspd" field is located in register DSTS[2:1], but the code +which checks the bitfield does not shift the value accordingly. This +in turn causes incorrect detection of gadget link partner speed in +dwc2_hsotg_irq_enumdone() . + +Shift the value accordingly to fix the problem with speed detection. + +Signed-off-by: Marek Vasut <marex@denx.de> +Cc: Felipe Balbi <balbi@ti.com> +Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +Cc: John Youn <johnyoun@synopsys.com> +--- + drivers/usb/dwc2/gadget.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c +index 0abf73c..48e47c1 100644 +--- a/drivers/usb/dwc2/gadget.c ++++ b/drivers/usb/dwc2/gadget.c +@@ -2095,7 +2095,7 @@ static void dwc2_hsotg_irq_enumdone(struct dwc2_hsotg *hsotg) + */ + + /* catch both EnumSpd_FS and EnumSpd_FS48 */ +- switch (dsts & DSTS_ENUMSPD_MASK) { ++ switch ((dsts & DSTS_ENUMSPD_MASK) >> DSTS_ENUMSPD_SHIFT) { + case DSTS_ENUMSPD_FS: + case DSTS_ENUMSPD_FS48: + hsotg->gadget.speed = USB_SPEED_FULL; +-- +2.7.0 + |