V4L/DVB (7092): radio-sf16fmr2: fix request_region() validation [bugzilla 9699]
V4L/DVB (7092): radio-sf16fmr2: fix request_region() validation [bugzilla 9699]

This patch changed the request_region() validation to avoid invalid return.
Thanks to Roland Kletzing <devzero@web.de> for bug report and data collection.

Signed-off-by: Douglas Schilling Landgraf <cb5f9630225b7afa1e13760d30868c8ce876fc60@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <ad86ba2154032c9f55743a190faa2459a9d61d42@infradead.org>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas