From 75f6108fa91bb80e9f7e8ead81f0cedf171d00a2 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Thu, 30 Oct 2014 12:42:32 +0000 Subject: [PATCH] staging: comedi: check actual data direction for COMEDI_BUFINFO ioctl `do_bufinfo_ioctl()` handled the `COMEDI_BUFINFO` ioctl. It is supposed to update the read or write positions in the buffer depending on the direction of data transfer set up by the asynchronous command. Currently it checks the `SDF_CMD_READ` and `SDF_CMD_WRITE` subdevice flags. That's fine for most subdevices - the ones that only support one direction, but is incorrect for those subdevices that allow the command to be set up in either direction. Since we now set the `CMDF_WRITE` flag according to the data transfer direction of the current command running on the subdevice, check that flag instead. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- Reading git-format-patch failed