Hi,
On Sun, Sep 27, 2015 at 03:16:45AM +0000, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <n...@linux-iscsi.org>
>
> This patch adds the missing tcm_usbg_drop_nexus() to properly
> release tcm_usbg_nexus memory during typical ->fabric_drop_tpg()
> callback shutdown.
>
> Also, fix up tcm_usbg_tpg_store_enable() return value to propigate
> usbg_attach() failure up to user-space if no HDC is found.
>
> Reported-by: Andrzej Pietrasiewicz <andrze...@samsung.com>
> Cc: Andrzej Pietrasiewicz <andrze...@samsung.com>
> Cc: Sebastian Andrzej Siewior <bige...@linutronix.de>
> Signed-off-by: Nicholas Bellinger <n...@linux-iscsi.org>
> ---
> drivers/usb/gadget/legacy/tcm_usb_gadget.c | 15 ++++++++++++---
> 1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/gadget/legacy/tcm_usb_gadget.c
> b/drivers/usb/gadget/legacy/tcm_usb_gadget.c
> index b764e91..54f036b 100644
> --- a/drivers/usb/gadget/legacy/tcm_usb_gadget.c
> +++ b/drivers/usb/gadget/legacy/tcm_usb_gadget.c
> @@ -1425,11 +1425,14 @@ static struct se_portal_group *usbg_make_tpg(
> return &tpg->se_tpg;
> }
>
> +static int tcm_usbg_drop_nexus(struct usbg_tpg *);
> +
> static void usbg_drop_tpg(struct se_portal_group *se_tpg)
> {
> struct usbg_tpg *tpg = container_of(se_tpg,
> struct usbg_tpg, se_tpg);
>
> + tcm_usbg_drop_nexus(tpg);
> core_tpg_deregister(se_tpg);
> destroy_workqueue(tpg->workqueue);
> kfree(tpg);
> @@ -1507,10 +1510,14 @@ static ssize_t tcm_usbg_tpg_store_enable(
> if (op > 1)
> return -EINVAL;
>
> - if (op && tpg->gadget_connect)
> + if (op && tpg->gadget_connect) {
> + ret = -EINVAL;
> goto out;
> - if (!op && !tpg->gadget_connect)
> + }
minor nit which I'm okay letting it go:
add a blank line here.
Acked-by: Felipe Balbi <ba...@ti.com>
> + if (!op && !tpg->gadget_connect) {
> + ret = -EINVAL;
> goto out;
> + }
>
> if (op) {
> ret = usbg_attach(tpg);
> @@ -1520,8 +1527,10 @@ static ssize_t tcm_usbg_tpg_store_enable(
> usbg_detach(tpg);
> }
> tpg->gadget_connect = op;
> -out:
> +
> return count;
> +out:
> + return ret;
> }
> TF_TPG_BASE_ATTR(tcm_usbg, enable, S_IRUGO | S_IWUSR);
>
> --
> 1.9.1
>
> --
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balbi
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