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| author | Shengzhou Liu <Shengzhou.Liu@freescale.com> | 2013-09-02 13:25:52 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-26 16:22:29 -0700 |
| commit | eee41b49b80420e3e8c118d18dfacb7da43c1caa (patch) | |
| tree | 160ec2054d1625de0ee073feec75c41ec719eb2e /drivers/usb/host/ehci-fsl.c | |
| parent | 2606b28aabd7dea1766c23a105e1124c95409c96 (diff) | |
| download | linux-eee41b49b80420e3e8c118d18dfacb7da43c1caa.tar.gz linux-eee41b49b80420e3e8c118d18dfacb7da43c1caa.tar.bz2 linux-eee41b49b80420e3e8c118d18dfacb7da43c1caa.zip | |
USB: fsl/ehci: fix failure of checking PHY_CLK_VALID during reinitialization
In case of usb phy reinitialization:
e.g. insmod usb-module(usb works well) -> rmmod usb-module -> insmod usb-module
It found the PHY_CLK_VALID bit didn't work if it's not with the power-on reset.
So we just check PHY_CLK_VALID bit during the stage with POR, this can be met
by the tricky of checking FSL_SOC_USB_PRICTRL register.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-fsl.c')
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index d3166e693dcb..f2407b2e8a99 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -264,8 +264,9 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, if (pdata->have_sysif_regs && pdata->controller_ver && (phy_mode == FSL_USB2_PHY_ULPI)) { /* check PHY_CLK_VALID to get phy clk valid */ - if (!spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & - PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0)) { + if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & + PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) || + in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) { printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n"); return -EINVAL; } |