drm/i915/perf: remove redundant variable 'taken'

The assignment to variable taken is redundant and so it can be
removed as well as the variable too.

Cleans up clang-scan build warnings:
warning: Although the value stored to 'taken' is used in the enclosing
expression, the value is never actually read from 'taken'
[deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221007195345.2749911-1-colin.i.king@gmail.com

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 0defbb4..15816df 100644 (file)
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -656,7 +656,6 @@ static int gen8_append_oa_reports(struct i915_perf_stream *stream,
        size_t start_offset = *offset;
        unsigned long flags;
        u32 head, tail;
-       u32 taken;
        int ret = 0;
 
        if (drm_WARN_ON(&uncore->i915->drm, !stream->enabled))
@@ -692,7 +691,7 @@ static int gen8_append_oa_reports(struct i915_perf_stream *stream,
 
 
        for (/* none */;
-            (taken = OA_TAKEN(tail, head));
+            OA_TAKEN(tail, head);
             head = (head + report_size) & mask) {
                u8 *report = oa_buf_base + head;
                u32 *report32 = (void *)report;
@@ -950,7 +949,6 @@ static int gen7_append_oa_reports(struct i915_perf_stream *stream,
        size_t start_offset = *offset;
        unsigned long flags;
        u32 head, tail;
-       u32 taken;
        int ret = 0;
 
        if (drm_WARN_ON(&uncore->i915->drm, !stream->enabled))
@@ -984,7 +982,7 @@ static int gen7_append_oa_reports(struct i915_perf_stream *stream,
 
 
        for (/* none */;
-            (taken = OA_TAKEN(tail, head));
+            OA_TAKEN(tail, head);
             head = (head + report_size) & mask) {
                u8 *report = oa_buf_base + head;
                u32 *report32 = (void *)report;