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| author | John Crispin <john@phrozen.org> | 2017-10-09 11:29:01 +0200 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-10-09 11:29:01 +0200 |
| commit | c972779e9875a3b69ae607bdb691bf5ff52710cf (patch) | |
| tree | 0d56b4284a1c89f52a8668fbbc28536bf2d06eef /target/linux/mediatek/patches-4.9 | |
| parent | 9e9696afc8f295b5abd1a8bc0b1826d7ec5e54ca (diff) | |
| download | mtk-20170518-c972779e9875a3b69ae607bdb691bf5ff52710cf.zip mtk-20170518-c972779e9875a3b69ae607bdb691bf5ff52710cf.tar.gz mtk-20170518-c972779e9875a3b69ae607bdb691bf5ff52710cf.tar.bz2 | |
mediatek: fix a sleep while atomic bug inside the ethernet driver
this sometimes happens when we have hw nat enabled.
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/mediatek/patches-4.9')
| -rw-r--r-- | target/linux/mediatek/patches-4.9/0063-atomic-sleep.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.9/0063-atomic-sleep.patch b/target/linux/mediatek/patches-4.9/0063-atomic-sleep.patch new file mode 100644 index 0000000..3a8cd59 --- /dev/null +++ b/target/linux/mediatek/patches-4.9/0063-atomic-sleep.patch @@ -0,0 +1,40 @@ +Index: linux-4.9.50/drivers/net/ethernet/mediatek/mtk_eth_soc.c +=================================================================== +--- linux-4.9.50.orig/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ linux-4.9.50/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -1533,7 +1533,10 @@ static void mtk_hwlro_rx_uninit(struct m + for (i = 0; i < 10; i++) { + val = mtk_r32(eth, MTK_PDMA_LRO_CTRL_DW0); + if (val & MTK_LRO_RING_RELINQUISH_DONE) { +- msleep(20); ++ if (in_atomic()) ++ mdelay(20); ++ else ++ msleep(20); + continue; + } + break; +@@ -1951,7 +1954,10 @@ static void mtk_stop_dma(struct mtk_eth + for (i = 0; i < 10; i++) { + val = mtk_r32(eth, glo_cfg); + if (val & (MTK_TX_DMA_BUSY | MTK_RX_DMA_BUSY)) { +- msleep(20); ++ if (in_atomic()) ++ mdelay(20); ++ else ++ msleep(20); + continue; + } + break; +@@ -1996,7 +2002,10 @@ static void ethsys_reset(struct mtk_eth + reset_bits, + reset_bits); + +- usleep_range(1000, 1100); ++ if (in_atomic()) ++ udelay(1000); ++ else ++ usleep_range(1000, 1100); + regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, + reset_bits, + ~reset_bits); |