diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2017-08-18 18:32:02 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-10-19 10:38:04 +0300 |
| commit | f9c5d1dbda8ee8757a987a55d6cf21b4eb443548 (patch) | |
| tree | 01f2fdf8d0f3029b9394b13b70a3895b8f059bba /drivers/usb/phy | |
| parent | bbb1cc050890dad2ad8747a23b9f22a53e726c9a (diff) | |
| download | linux-f9c5d1dbda8ee8757a987a55d6cf21b4eb443548.tar.bz2 | |
usb: phy: phy-generic: propagate clk_get error if clock is required
If the clock handle is given in the DT, it means the clock is required
for proper operation of the PHY. In that case a failure to obtain the
clock must be propagated to stop the driver from probing. This fixes
working with clocks, which request probe deferral.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/phy-generic.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 89d6e7a5fdb7..1cc02eb3fc65 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -224,7 +224,7 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, int err = 0; u32 clk_rate = 0; - bool needs_vcc = false; + bool needs_vcc = false, needs_clk = false; if (dev->of_node) { struct device_node *node = dev->of_node; @@ -233,6 +233,7 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, clk_rate = 0; needs_vcc = of_property_read_bool(node, "vcc-supply"); + needs_clk = of_property_read_bool(node, "clocks"); nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_ASIS); err = PTR_ERR_OR_ZERO(nop->gpiod_reset); @@ -275,6 +276,8 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, if (IS_ERR(nop->clk)) { dev_dbg(dev, "Can't get phy clock: %ld\n", PTR_ERR(nop->clk)); + if (needs_clk) + return PTR_ERR(nop->clk); } if (!IS_ERR(nop->clk) && clk_rate) { |