drm/i915: Fix setting of boost freq tunable
For limiting the max frequency of gpu, the max freq tunable is not enough to hard limit the max gap. We now have also per client boost max freq. When this tunable was introduced, it was mistakenly made read only. Allow user to gain control by setting it writable. Fixes:29ecd78d3b
("drm/i915: Define a separate variable and control for RPS waitboost frequency") Cc: <stable@vger.kernel.org> # v4.9+ Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1481718380-9170-1-git-send-email-mika.kuoppala@intel.com (cherry picked from commit73a7987113
) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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@ -460,7 +460,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
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static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL);
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static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL);
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static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store);
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static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO | S_IWUSR, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store);
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static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store);
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static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store);
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