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| author | Jonas Gorski <jonas.gorski@gmail.com> | 2017-10-02 11:41:43 +0200 |
|---|---|---|
| committer | Jonas Gorski <jonas.gorski@gmail.com> | 2017-12-16 12:57:05 +0100 |
| commit | 49c3b1c4555db688c4c514d1284254f954e46180 (patch) | |
| tree | 4e8bb279e592509354f071118ebfb24a3690d7bb /target/linux/brcm63xx/patches-4.4/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch | |
| parent | aba4e29eadfb82ef7f52f85cdb4cd10a4abad622 (diff) | |
| download | upstream-49c3b1c4555db688c4c514d1284254f954e46180.tar.gz upstream-49c3b1c4555db688c4c514d1284254f954e46180.tar.bz2 upstream-49c3b1c4555db688c4c514d1284254f954e46180.zip | |
brcm63xx: backport enet cleanup patches
Align with upstream version, mostly non-fixes and small clean ups.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Diffstat (limited to 'target/linux/brcm63xx/patches-4.4/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.4/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch b/target/linux/brcm63xx/patches-4.4/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch new file mode 100644 index 0000000000..22c6d01873 --- /dev/null +++ b/target/linux/brcm63xx/patches-4.4/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch @@ -0,0 +1,29 @@ +From 23d94cb855b6f4f0ee1c01679224472104ac6440 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Sat, 30 Sep 2017 14:10:18 +0200 +Subject: [PATCH 2/6] bcm63xx_enet: do not write to random DMA channel on + BCM6345 + +The DMA controller regs actually point to DMA channel 0, so the write to +ENETDMA_CFG_REG will actually modify a random DMA channel. + +Since DMA controller registers do not exist on BCM6345, guard the write +with the usual check for dma_has_sram. + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +--- + drivers/net/ethernet/broadcom/bcm63xx_enet.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -1063,7 +1063,8 @@ static int bcm_enet_open(struct net_devi + val = enet_readl(priv, ENET_CTL_REG); + val |= ENET_CTL_ENABLE_MASK; + enet_writel(priv, val, ENET_CTL_REG); +- enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); ++ if (priv->dma_has_sram) ++ enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); + enet_dmac_writel(priv, priv->dma_chan_en_mask, + ENETDMAC_CHANCFG, priv->rx_chan); + |