Merge "mhi: core: add memory barrier after ring operations" (cca2a4de) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/platform/msm/mhi/mhi_ring_ops.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -48,6 +48,9 @@ static int add_element(struct mhi_ring ring, void *rp,
		assigned_addr = (char )ring->wp;
		wp = (void )(((d_wp + 1) % ring_size) * ring->el_size +
		(uintptr_t)ring->base);

		/* force update visible to other cores */
		smp_wmb();
		return 0;
		}

		@@ -101,6 +104,9 @@ int delete_element(struct mhi_ring ring, void *rp,

		rp = (void )(((d_rp + 1) % ring_size) * ring->el_size +
		(uintptr_t)ring->base);

		/* force update visible to other cores */
		smp_wmb();
		return 0;
		}