dma-buf/dma-resv: Respect num_fences when initializing the shared fence list.
commit5.4-rM2-2.2.x-imx-squashedbf8975837d
upstream. We hardcode the maximum number of shared fences to 4, instead of respecting num_fences. Use a minimum of 4, but more if num_fences is higher. This seems to have been an oversight when first implementing the api. Fixes:04a5faa8cb
("reservation: update api and add some helpers") Cc: <stable@vger.kernel.org> # v3.17+ Reported-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201124115707.406917-1-maarten.lankhorst@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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b16a6a46e0
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383c60c16d
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@ -161,7 +161,7 @@ int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences)
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max = max(old->shared_count + num_fences,
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old->shared_max * 2);
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} else {
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max = 4;
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max = max(4ul, roundup_pow_of_two(num_fences));
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}
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new = dma_resv_list_alloc(max);
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