powerpc/spufs: Remove set but not used variable 'dummy'

Fixes gcc '-Wunused-but-set-variable' warning:
# WARNING: Fixes tag on line 3 doesn't match correct format
# WARNING: Fixes tag on line 3 doesn't match correct format
# WARNING: Fixes tag on line 3 doesn't match correct format
# WARNING: Fixes tag on line 3 doesn't match correct format
# WARNING: Fixes tag on line 3 doesn't match correct format

arch/powerpc/platforms/cell/spufs/switch.c: In function 'check_ppu_mb_stat':
arch/powerpc/platforms/cell/spufs/switch.c:1660:6: warning:
variable ‘dummy’ set but not used [-Wunused-but-set-variable]

arch/powerpc/platforms/cell/spufs/switch.c: In function 'check_ppuint_mb_stat':
arch/powerpc/platforms/cell/spufs/switch.c:1675:6: warning:
variable ‘dummy’ set but not used [-Wunused-but-set-variable]

It never used since introduction.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210601085127.139598-1-libaokun1@huawei.com

diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c
index d56b4e3..b41e81b 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -1657,14 +1657,13 @@ static inline void restore_spu_mb(struct spu_state *csa, struct spu *spu)
 static inline void check_ppu_mb_stat(struct spu_state *csa, struct spu *spu)
 {
        struct spu_problem __iomem *prob = spu->problem;
-       u32 dummy = 0;
 
        /* Restore, Step 66:
         *     If CSA.MB_Stat[P]=0 (mailbox empty) then
         *     read from the PPU_MB register.
         */
        if ((csa->prob.mb_stat_R & 0xFF) == 0) {
-               dummy = in_be32(&prob->pu_mb_R);
+               in_be32(&prob->pu_mb_R);
                eieio();
        }
 }
@@ -1672,14 +1671,13 @@ static inline void check_ppu_mb_stat(struct spu_state *csa, struct spu *spu)
 static inline void check_ppuint_mb_stat(struct spu_state *csa, struct spu *spu)
 {
        struct spu_priv2 __iomem *priv2 = spu->priv2;
-       u64 dummy = 0UL;
 
        /* Restore, Step 66:
         *     If CSA.MB_Stat[I]=0 (mailbox empty) then
         *     read from the PPUINT_MB register.
         */
        if ((csa->prob.mb_stat_R & 0xFF0000) == 0) {
-               dummy = in_be64(&priv2->puint_mb_R);
+               in_be64(&priv2->puint_mb_R);
                eieio();
                spu_int_stat_clear(spu, 2, CLASS2_ENABLE_MAILBOX_INTR);
                eieio();