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msm: ipa: Fix the double unmap page recycling cleanup on ssr

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Fix the issue on ssr where some of the pages get unmapped
twice by mistake.

Change-Id: I9191fde3d908086b6a6755d1217d6776a0e5d23a
Signed-off-by: Bojun Pan <bojunp@codeaurora.org>
This commit is contained in:
Bojun Pan 2019-08-13 23:08:08 -07:00 • committed by Gerrit - the friendly Code Review server
commit 1506af9867
1 changed files with 18 additions and 8 deletions
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26
drivers/platform/msm/ipa/ipa_v3/ipa_dp.c
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@ -2435,12 +2435,19 @@ static void free_rx_page(void *chan_user_data, void *xfer_user_data)
{
struct ipa3_rx_pkt_wrapper *rx_pkt = (struct ipa3_rx_pkt_wrapper *)
xfer_user_data;
struct ipa3_sys_context *sys = rx_pkt->sys;
int i;
for (i = 0; i < sys->repl->capacity; i++)
if (sys->repl->cache[i] == rx_pkt)
break;
dma_unmap_page(ipa3_ctx->pdev, rx_pkt->page_data.dma_addr,
rx_pkt->len, DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt);
if (i < sys->repl->capacity)
sys->repl->cache[i] = NULL;
}
/**
@ -2489,14 +2496,17 @@ static void ipa3_cleanup_rx(struct ipa3_sys_context *sys)
} else {
for (i = 0; i < sys->repl->capacity; i++) {
rx_pkt = sys->repl->cache[i];
dma_unmap_page(ipa3_ctx->pdev,
rx_pkt->page_data.dma_addr,
rx_pkt->len,
DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache,
rx_pkt);
if (rx_pkt) {
dma_unmap_page(ipa3_ctx->pdev,
rx_pkt->page_data.dma_addr,
rx_pkt->len,
DMA_FROM_DEVICE);
__free_pages(rx_pkt->page_data.page,
IPA_WAN_PAGE_ORDER);
kmem_cache_free(
ipa3_ctx->rx_pkt_wrapper_cache,
rx_pkt);
}
}
}
kfree(sys->repl->cache);