> -----Original Message----- > From: Li Yang-R58472 > Sent: Wednesday, February 15, 2012 2:32 PM > To: Chen Peter-B29397; balbi@xxxxxx > Cc: linux-usb@xxxxxxxxxxxxxxx > Subject: RE: [PATCH 1/1] usb: fsl_udc_core: Fix scheduling while atomic > dump message > > >> >The reason of above dump message is calling dma_poll_alloc with can- > >> >schedule mem_flags at interrupt context. Changing mem_flags from > >> >GFP_KERNEL to GFP_ATOMIC fix this problem. > >> > >> Thanks for the patch. But I think the proper way to fix this is to > >> use the gfp_flags parameter passed by fsl_ep_queue(). > >> > >Hi Leo, current allocate dtd descriptor code are all at atomic context. > > Most of the usb_ep_queue() are using GFP_ATOMIC, but there are a few > using GFP_KERNEL. For example start_transfer() in file_storage.c. > It is in spin_lock_irqsave/spin_unlock_irqrestore. > - Leo -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
