@@ -600,8 +600,10 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
static int usbhsg_ep_disable(struct usb_ep *ep)
{
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
usbhsg_pipe_disable(uep);
+ usbhs_pipe_free(pipe);
uep->pipe->mod_private = NULL;
uep->pipe = NULL;
@@ -640,6 +640,11 @@ static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
return pipe;
}
+static void usbhsp_put_pipe(struct usbhs_pipe *pipe)
+{
+ usbhsp_flags_init(pipe);
+}
+
void usbhs_pipe_init(struct usbhs_priv *priv,
int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map))
{
@@ -727,6 +732,11 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
return pipe;
}
+void usbhs_pipe_free(struct usbhs_pipe *pipe)
+{
+ usbhsp_put_pipe(pipe);
+}
+
void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo)
{
if (pipe->fifo)
@@ -75,6 +75,7 @@ struct usbhs_pipe_info {
char *usbhs_pipe_name(struct usbhs_pipe *pipe);
struct usbhs_pipe
*usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in);
+void usbhs_pipe_free(struct usbhs_pipe *pipe);
int usbhs_pipe_probe(struct usbhs_priv *priv);
void usbhs_pipe_remove(struct usbhs_priv *priv);
int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
This patch fixes an issue that the renesas_usbhs driver in gadget mode cannot work correctly even if I disabled DMAC of the driver when I used the g_zero driver and the testusb tool. When a usb cable is re-connected, the renesas_usbhs driver calls the usbhsp_flags_init() (via usbhs_hotplug() --> usbhs_mod_call(start) --> usbhsg_try_start() --> usbhs_pipe_init()). However, the driver doesn't call the usbhsp_flags_init() when usbhsg_ep_disable() is called. So, if a gadget driver calls usb_ep_enable() and usb_ep_disable() again and again, the renesas_usbhs driver will output the following log: renesas_usbhs renesas_usbhs: can't get pipe (BULK) renesas_usbhs renesas_usbhs: wrong recip request Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> --- drivers/usb/renesas_usbhs/mod_gadget.c | 2 ++ drivers/usb/renesas_usbhs/pipe.c | 10 ++++++++++ drivers/usb/renesas_usbhs/pipe.h | 1 + 3 files changed, 13 insertions(+)