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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-12-18 22:52:20 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-12-18 22:52:20 +0100 |
| commit | 1ddf624b0b268fdc0b80b1de618b98f8d117afea (patch) | |
| tree | 3d3218332bcb34cb0afa01d6ad996058a3dbcb77 /drivers/usb/dwc3/debugfs.c | |
| parent | 6b774eec1f9d3064e9b33634dfa99d5666d0a73a (diff) | |
| parent | bfb9e5c03076a446b1f4f6a523ddc8d723c907a6 (diff) | |
Merge tag 'v4.14.159' into 4.14-2.0.x-imx
This is the 4.14.159 stable release
Conflicts:
arch/arm/Kconfig.debug
arch/arm/boot/dts/imx7s.dtsi
arch/arm/mach-imx/cpuidle-imx6sx.c
drivers/crypto/caam/caamalg.c
drivers/crypto/mxs-dcp.c
drivers/dma/imx-sdma.c
drivers/input/keyboard/imx_keypad.c
drivers/net/can/flexcan.c
drivers/net/can/rx-offload.c
drivers/net/wireless/ath/ath10k/pci.c
drivers/pci/dwc/pci-imx6.c
drivers/spi/spi-fsl-lpspi.c
drivers/usb/dwc3/gadget.c
Diffstat (limited to 'drivers/usb/dwc3/debugfs.c')
| -rw-r--r-- | drivers/usb/dwc3/debugfs.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 4e09be80e59f..0d6a6a168a7e 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -436,13 +436,17 @@ static int dwc3_link_state_show(struct seq_file *s, void *unused) unsigned long flags; enum dwc3_link_state state; u32 reg; + u8 speed; spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_DSTS); state = DWC3_DSTS_USBLNKST(reg); - spin_unlock_irqrestore(&dwc->lock, flags); + speed = reg & DWC3_DSTS_CONNECTSPD; - seq_printf(s, "%s\n", dwc3_gadget_link_string(state)); + seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ? + dwc3_gadget_link_string(state) : + dwc3_gadget_hs_link_string(state)); + spin_unlock_irqrestore(&dwc->lock, flags); return 0; } @@ -460,6 +464,8 @@ static ssize_t dwc3_link_state_write(struct file *file, unsigned long flags; enum dwc3_link_state state = 0; char buf[32]; + u32 reg; + u8 speed; if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; @@ -480,6 +486,15 @@ static ssize_t dwc3_link_state_write(struct file *file, return -EINVAL; spin_lock_irqsave(&dwc->lock, flags); + reg = dwc3_readl(dwc->regs, DWC3_DSTS); + speed = reg & DWC3_DSTS_CONNECTSPD; + + if (speed < DWC3_DSTS_SUPERSPEED && + state != DWC3_LINK_STATE_RECOV) { + spin_unlock_irqrestore(&dwc->lock, flags); + return -EINVAL; + } + dwc3_gadget_set_link_state(dwc, state); spin_unlock_irqrestore(&dwc->lock, flags); |