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| author | françois romieu <romieu@fr.zoreil.com> | 2012-10-05 23:29:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-13 05:28:13 +0900 |
| commit | 8ffd1cb75b0d422f4ee723c79d9eccc81b6442f6 (patch) | |
| tree | 78692db092d940e996a98ddf7e6fb252e1230324 /drivers/net/r8169.c | |
| parent | 85ce02207e7728d82cc6183d34c2bdd9e1999b2e (diff) | |
| download | kernel_samsung_smdk4412-8ffd1cb75b0d422f4ee723c79d9eccc81b6442f6.zip kernel_samsung_smdk4412-8ffd1cb75b0d422f4ee723c79d9eccc81b6442f6.tar.gz kernel_samsung_smdk4412-8ffd1cb75b0d422f4ee723c79d9eccc81b6442f6.tar.bz2 | |
r8169: fix Config2 MSIEnable bit setting.
commit 2ca6cf06d988fea21e812a86be79353352677c9c upstream.
The MSIEnable bit is only available for the 8169.
Avoid Config2 writes for the post-8169 8168 and 810x.
Reported-by: Su Kang Yin <cantona@cantona.net>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/r8169.c')
| -rw-r--r-- | drivers/net/r8169.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index 0335ab0..9f5d8f9 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -448,7 +448,6 @@ enum rtl_register_content { /* Config1 register p.24 */ LEDS1 = (1 << 7), LEDS0 = (1 << 6), - MSIEnable = (1 << 5), /* Enable Message Signaled Interrupt */ Speed_down = (1 << 4), MEMMAP = (1 << 3), IOMAP = (1 << 2), @@ -456,6 +455,7 @@ enum rtl_register_content { PMEnable = (1 << 0), /* Power Management Enable */ /* Config2 register p. 25 */ + MSIEnable = (1 << 5), /* 8169 only. Reserved in the 8168. */ PCI_Clock_66MHz = 0x01, PCI_Clock_33MHz = 0x00, @@ -3003,22 +3003,24 @@ static const struct rtl_cfg_info { }; /* Cfg9346_Unlock assumed. */ -static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr, +static unsigned rtl_try_msi(struct rtl8169_private *tp, const struct rtl_cfg_info *cfg) { + void __iomem *ioaddr = tp->mmio_addr; unsigned msi = 0; u8 cfg2; cfg2 = RTL_R8(Config2) & ~MSIEnable; if (cfg->features & RTL_FEATURE_MSI) { - if (pci_enable_msi(pdev)) { - dev_info(&pdev->dev, "no MSI. Back to INTx.\n"); + if (pci_enable_msi(tp->pci_dev)) { + netif_info(tp, hw, tp->dev, "no MSI. Back to INTx.\n"); } else { cfg2 |= MSIEnable; msi = RTL_FEATURE_MSI; } } - RTL_W8(Config2, cfg2); + if (tp->mac_version <= RTL_GIGA_MAC_VER_06) + RTL_W8(Config2, cfg2); return msi; } @@ -3588,7 +3590,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) tp->features |= RTL_FEATURE_WOL; if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0) tp->features |= RTL_FEATURE_WOL; - tp->features |= rtl_try_msi(pdev, ioaddr, cfg); + tp->features |= rtl_try_msi(tp, cfg); RTL_W8(Cfg9346, Cfg9346_Lock); if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) && |