Declare dynamically allocated strings as 'char *' instead of 'const char *'.
Remove the discard_const() macro. Do not test whether or not a pointer is
NULL before calling free() because it is allowed to pass NULL to free().
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
A quote from SPC-4: "When using the MODE SENSE command, a
parameters saveable (PS) bit set to one indicates that the mode
page may be saved by the logical unit in a nonvolatile, vendor
specific location. A PS bit set to zero indicates that the device
server is not able to save the supported parameters. When using
the MODE SELECT command, the PS bit is reserved."
Hence clear the PS bit after having queried a mode page via MODE
SENSE and before changing it via MODE SELECT.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
