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authorYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>2017-07-18 14:26:42 +0200
committerFelipe Balbi <felipe.balbi@linux.intel.com>2017-07-18 15:20:31 +0200
commit781001ff9678e5df048cca3d4290c1638a28cafa (patch)
tree1b86a7b0e8e378faf5d3fdc17fc1caa356a825dd /drivers/vlynq
parentusb: gadget: udc: renesas_usb3: fix zlp transfer by the dmac (diff)
downloadlinux-781001ff9678e5df048cca3d4290c1638a28cafa.tar.xz
linux-781001ff9678e5df048cca3d4290c1638a28cafa.zip
usb: gadget: udc: renesas_usb3: protect usb3_ep->started in usb3_start_pipen()
This patch fixes an issue that unexpected behavior happens when both the interrupt handler and renesas_usb3_ep_enable() are called. In this case, since usb3_start_pipen() checked the usb3_ep->started, but the flags was not protected. So, this patch protects the flag by usb3->lock. Since renesas_usb3_ep_enable() for EP0 will be not called, this patch doesn't take care of usb3_start_pipe0(). Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/vlynq')
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