staging: speakup: check and convert dev name or ser to dev_t
authorOkash Khawaja <okash.khawaja@gmail.com>
Sun, 25 Jun 2017 18:40:01 +0000 (19:40 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 27 Jun 2017 07:12:33 +0000 (09:12 +0200)
commita5525dc0b8341cfa2d6c8bfe2796168a0ce83dfd
tree7a898206feb6132cd52f92026a316edfc1ee9cd5
parentfc61ed51270e86440cf7cf84cbe1d86753592932
staging: speakup: check and convert dev name or ser to dev_t

This patch adds functionality to validate and convert either a device
name or 'ser' memmber of synth into dev_t. Subsequent patch in this set
will call it to convert user-specified device into device number. For
device name, this patch does some basic sanity checks on the string
passed in. It currently supports ttyS*, ttyUSB* and, for selected
synths, lp*.

The patch also introduces a string member variable named 'dev_name' to
struct spk_synth. 'dev_name' represents the device name - ttyUSB0 etc -
which needs conversion to dev_t.

Signed-off-by: Okash Khawaja <okash.khawaja@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/speakup/spk_priv.h
drivers/staging/speakup/spk_ttyio.c
drivers/staging/speakup/spk_types.h