From 2891911a32e81942cefb1bbc1398f39e9fe76db5 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 6 May 2014 13:12:18 +0100 Subject: [PATCH] staging: comedi: remove subdevice member of struct comedi_async The `async` member of `struct comedi_subdevice` may point to a `struct comedi_async` or may be NULL. The `subdevice` member of `struct comedi_async` points back to the `struct comedi_subdevice` associated with it in a one-to-one relationship. All uses of the `subdevice` member of `struct comedi_async` apart from its initialization have now been removed (by passing around a pointer to the subdevice instead of to the "async" structure), so get rid of it. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/comedidev.h | 2 -- drivers/staging/comedi/drivers.c | 1 - 2 files changed, 3 deletions(-) diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index a5d479c1266e..d07d47f5db81 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -108,8 +108,6 @@ struct comedi_buf_map { }; struct comedi_async { - struct comedi_subdevice *subdevice; - void *prealloc_buf; /* pre-allocated buffer */ unsigned int prealloc_bufsz; /* buffer size, in bytes */ struct comedi_buf_map *buf_map; /* map of buffer pages */ diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index cb5d21411a0c..299726f39e26 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -307,7 +307,6 @@ static int __comedi_device_postconfig_async(struct comedi_device *dev, return -ENOMEM; init_waitqueue_head(&async->wait_head); - async->subdevice = s; s->async = async; async->max_bufsize = comedi_default_buf_maxsize_kb * 1024; -- 2.39.5