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msm: gsi: Fix the incorrect evt ring pointer

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The pointer should be event ring pointer, not transfer
ring pointer, it has chance to get wrong upper 32 bits
when smmu is disabled.

Signed-off-by: Cheng Zeng <quic_chenzeng@quicinc.com>
This commit is contained in:
Cheng Zeng 2022-03-24 16:09:28 +08:00
commit 8aa0d102d8
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/msm/gsi/gsi.c
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@ -4057,7 +4057,7 @@ int gsi_poll_n_channel(unsigned long chan_hdl,
/* update rp to see of we have anything new to process */
rp = ctx->evtr->props.gsi_read_event_ring_rp(
&ctx->evtr->props, ctx->evtr->id, ee);
rp |= ctx->ring.rp & 0xFFFFFFFF00000000ULL;
rp |= ctx->evtr->ring.rp & 0xFFFFFFFF00000000ULL;
ctx->evtr->ring.rp = rp;
/* read gsi event ring rp again if last read is empty */
@ -4069,7 +4069,7 @@ int gsi_poll_n_channel(unsigned long chan_hdl,
__iowmb();
rp = ctx->evtr->props.gsi_read_event_ring_rp(
&ctx->evtr->props, ctx->evtr->id, ee);
rp |= ctx->ring.rp & 0xFFFFFFFF00000000ULL;
rp |= ctx->evtr->ring.rp & 0xFFFFFFFF00000000ULL;
ctx->evtr->ring.rp = rp;
if (rp == ctx->evtr->ring.rp_local) {
spin_unlock_irqrestore(