diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.4/0093-net-next-mediatek-remove-superfluous-register-reads.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.4/0093-net-next-mediatek-remove-superfluous-register-reads.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.4/0093-net-next-mediatek-remove-superfluous-register-reads.patch b/target/linux/mediatek/patches-4.4/0093-net-next-mediatek-remove-superfluous-register-reads.patch new file mode 100644 index 0000000000..a83d71362e --- /dev/null +++ b/target/linux/mediatek/patches-4.4/0093-net-next-mediatek-remove-superfluous-register-reads.patch @@ -0,0 +1,42 @@ +From 31428406bf4b9da2a322ae947096414ff0489fb5 Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Tue, 3 May 2016 03:57:01 +0200 +Subject: [PATCH 093/102] net-next: mediatek: remove superfluous register + reads + +The driver was originally written for MIPS based SoC. These required the +IRQ mask register to be read after writing it to ensure that the content +was actually applied. As this version only works on ARM based SoC, we can +safely remove the 2 reads as they ware not required. + +Signed-off-by: Sean Wang <keyhaede@gmail.com> +Signed-off-by: John Crispin <john@phrozen.org> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 ---- + 1 file changed, 4 deletions(-) + +diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +index a569c32..6a9fbde 100644 +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -335,8 +335,6 @@ static inline void mtk_irq_disable(struct mtk_eth *eth, u32 mask) + + val = mtk_r32(eth, MTK_QDMA_INT_MASK); + mtk_w32(eth, val & ~mask, MTK_QDMA_INT_MASK); +- /* flush write */ +- mtk_r32(eth, MTK_QDMA_INT_MASK); + } + + static inline void mtk_irq_enable(struct mtk_eth *eth, u32 mask) +@@ -345,8 +343,6 @@ static inline void mtk_irq_enable(struct mtk_eth *eth, u32 mask) + + val = mtk_r32(eth, MTK_QDMA_INT_MASK); + mtk_w32(eth, val | mask, MTK_QDMA_INT_MASK); +- /* flush write */ +- mtk_r32(eth, MTK_QDMA_INT_MASK); + } + + static int mtk_set_mac_address(struct net_device *dev, void *p) +-- +1.7.10.4 + |