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usb: musb: core: controller drops session automatically

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Whenever babble happens, MUSB controller will
drop session automatically.

The only case where it won't drop the session,
is when we're running on AM335x and SW_SESSION_CTRL
bit has been set. In that case, controller will
not touch session bit so SW has a chance to recover
from babble condition.

Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi
2015-02-26 11:09:20 -06:00
parent f860f0b1ea
commit a67cab72b8
1 changed files with 0 additions and 1 deletions
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1
drivers/usb/musb/musb_core.c
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@@ -880,7 +880,6 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
*/
if (power & MUSB_POWER_HSMODE) {
dev_err(musb->controller, "Babble\n");
musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
if (is_host_active(musb)) {
musb_generic_disable(musb);