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Date: Mon, 15 Sep 2014 12:35:06 +0200 From: Antoine Tenart <antoine.tenart@...e-electrons.com> To: balbi@...com, gregkh@...uxfoundation.org, Peter.Chen@...escale.com, kishon@...com, stern@...land.harvard.edu Cc: Antoine Tenart <antoine.tenart@...e-electrons.com>, sergei.shtylyov@...entembedded.com, yoshihiro.shimoda.uh@...esas.com, alexandre.belloni@...e-electrons.com, thomas.petazzoni@...e-electrons.com, zmxu@...vell.com, jszhang@...vell.com, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v5 6/9] usb: allow to supply the PHY in the drivers when using HCD This patch modify the generic code handling PHYs to allow them to be supplied from the drivers. This adds checks to ensure no PHY was already there when looking for one in the generic code. This also makes sure we do not modify its state in the generic HCD functions, it was provided by the driver. Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com> Acked-by: Alan Stern <stern@...land.harvard.edu> --- drivers/usb/core/hcd.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 6619239baf6d..dc0e46e5e618 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2646,7 +2646,7 @@ int usb_add_hcd(struct usb_hcd *hcd, } } - if (IS_ENABLED(CONFIG_GENERIC_PHY)) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) { struct phy *phy = phy_get(hcd->self.controller, "usb"); if (IS_ERR(phy)) { @@ -2666,6 +2666,7 @@ int usb_add_hcd(struct usb_hcd *hcd, goto err_phy; } hcd->phy = phy; + hcd->remove_phy = 1; } } @@ -2812,7 +2813,7 @@ err_allocate_root_hub: err_register_bus: hcd_buffer_destroy(hcd); err_create_buf: - if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { phy_power_off(hcd->phy); phy_exit(hcd->phy); phy_put(hcd->phy); @@ -2896,7 +2897,7 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_deregister_bus(&hcd->self); hcd_buffer_destroy(hcd); - if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { phy_power_off(hcd->phy); phy_exit(hcd->phy); phy_put(hcd->phy); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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