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| author | George Cherian | 2014-07-16 14:52:11 +0200 |
|---|---|---|
| committer | Felipe Balbi | 2014-07-16 16:59:58 +0200 |
| commit | d871c622e202efc663f953a4fcbd2cba6a28a24f (patch) | |
| tree | 3b55073f60857eb84e4587b23a2d88ab9cdc7cb0 /drivers/usb/musb/musb_core.c | |
| parent | usb: musb: core: Convert babble recover work to delayed work (diff) | |
| download | kernel-qcow2-linux-d871c622e202efc663f953a4fcbd2cba6a28a24f.tar.gz kernel-qcow2-linux-d871c622e202efc663f953a4fcbd2cba6a28a24f.tar.xz kernel-qcow2-linux-d871c622e202efc663f953a4fcbd2cba6a28a24f.zip | |
usb: musb: core: Convert the musb_platform_reset to have a return value.
Currently musb_platform_reset() is only used by dsps.
In case of BABBLE interrupt for other platforms the musb_platform_reset()
is a NOP. In such situations no need to re-initialize the endpoints.
Also in the latest silicon revision of AM335x, we do have a babble recovery
mechanism without resetting the IP block. In preperation to add that support
its better to have a rest_done return for musb_platform_reset().
Signed-off-by: George Cherian <george.cherian@ti.com>
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/musb_core.c')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index c0ce09f8fdcd..b841ee0bff06 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1753,9 +1753,11 @@ static void musb_irq_work(struct work_struct *data) static void musb_recover_work(struct work_struct *data) { struct musb *musb = container_of(data, struct musb, recover_work.work); - int status; + int status, ret; - musb_platform_reset(musb); + ret = musb_platform_reset(musb); + if (ret) + return; usb_phy_vbus_off(musb->xceiv); usleep_range(100, 200); @@ -1764,8 +1766,8 @@ static void musb_recover_work(struct work_struct *data) usleep_range(100, 200); /* - * When a babble condition occurs, the musb controller removes the - * session bit and the endpoint config is lost. + * When a babble condition occurs, the musb controller + * removes the session bit and the endpoint config is lost. */ if (musb->dyn_fifo) status = ep_config_from_table(musb); |