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agp/nvidia: Declare value returned by readl() as unused 

Fix the compiler warning

  drivers/char/agp/nvidia-agp.c: In function 'nvidia_tlbflush':
  drivers/char/agp/nvidia-agp.c:264:22: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
    264 |         u32 wbc_reg, temp;

by marking the temp variable with __maybe_unused. The affected readl()
is only required for flushing caches, but the returned value is not of
interest.

v2:
	* declare temp as __maybe_unused (Helge)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20211201114645.15384-6-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2021-12-01 12:46:43 +01:00
parent ba7e3fd19a
commit c4f7f3117e
1 changed files with 2 additions and 1 deletions
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3
drivers/char/agp/nvidia-agp.c
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@ -261,7 +261,8 @@ static int nvidia_remove_memory(struct agp_memory *mem, off_t pg_start, int type
static void nvidia_tlbflush(struct agp_memory *mem)
{
unsigned long end;
u32 wbc_reg, temp;
u32 wbc_reg;
u32 __maybe_unused temp;
int i;
/* flush chipset */