From: Ian Abbott Date: Tue, 18 Sep 2012 18:46:59 +0000 (+0100) Subject: staging: comedi: sparse warning in insn_rw_emulate_bits() X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~75^2~102 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9f82e95773f0f02cfc948c8346a61d161f4eb61b;p=pandora-kernel.git staging: comedi: sparse warning in insn_rw_emulate_bits() `insn_rw_emulate_bits()` is used to emulate the `INSN_READ` and `INSN_WRITE` comedi instructions for subdevices that don't have an `insn_read()` or `insn_write()` handler but do have an `insn_bits()` handler. The function fills in a temporary `struct comedi_insn` called `new_insn` to pass to the subdevice's `insn_bits()` handler. In doing so, it sets the `new_insn.data` pointer to point to a temporary data array. This results in a warning from "sparse" because the `data` pointer in `struct comedi_insn` has the `__user` tag. The subdevice's `insn_bits()` handler ignores it anyway as it gets passed a pointer to the temporary data array in a separate parameter. Don't bother setting `new_insn.data`; just leave it set to `NULL` (done by an earlier `memset()`). Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed