On Mon, Jun 26, 2017 at 7:45 AM, AbdAllah-MEZITI
[off-list ref] wrote:

This patch
- will always take the lock

Why?

"The current code only takes the lock if multiple instances are in use.
 This is error-prone, and confuses static analyzers.
 As taking the lock in case of a single instance is harmful and cheap,
 change the code to always take the lock."

- fix the sparse warning:
drivers/staging/sm750fb/sm750.c:159:13: warning: context imbalance in 'lynxfb_ops_fillrect' - different lock contexts for basic block
drivers/staging/sm750fb/sm750.c:231:9: warning: context imbalance in 'lynxfb_ops_copyarea' - different lock contexts for basic block
drivers/staging/sm750fb/sm750.c:235:13: warning: context imbalance in 'lynxfb_ops_imageblit' - different lock contexts for basic block

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds