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| author | Furong Xu <0x1207@gmail.com> | 2023-11-25 14:01:26 +0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-11-28 11:45:07 +0100 |
| commit | e54d628a2721bfbb002c19f6e8ca6746cec7640f (patch) | |
| tree | f8b4624a5c4359ecf4a05c39699bd3483c34679f /drivers/net/ethernet | |
| parent | ad31c629ca3c87f6d557488c1f9faaebfbcd203c (diff) | |
| download | lwn-e54d628a2721bfbb002c19f6e8ca6746cec7640f.tar.gz lwn-e54d628a2721bfbb002c19f6e8ca6746cec7640f.zip | |
net: stmmac: xgmac: Disable FPE MMC interrupts
Commit aeb18dd07692 ("net: stmmac: xgmac: Disable MMC interrupts
by default") tries to disable MMC interrupts to avoid a storm of
unhandled interrupts, but leaves the FPE(Frame Preemption) MMC
interrupts enabled, FPE MMC interrupts can cause the same problem.
Now we mask FPE TX and RX interrupts to disable all MMC interrupts.
Fixes: aeb18dd07692 ("net: stmmac: xgmac: Disable MMC interrupts by default")
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Signed-off-by: Furong Xu <0x1207@gmail.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Link: https://lore.kernel.org/r/20231125060126.2328690-1-0x1207@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/mmc_core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c index ea4910ae0921..6a7c1d325c46 100644 --- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c @@ -177,8 +177,10 @@ #define MMC_XGMAC_RX_DISCARD_OCT_GB 0x1b4 #define MMC_XGMAC_RX_ALIGN_ERR_PKT 0x1bc +#define MMC_XGMAC_TX_FPE_INTR_MASK 0x204 #define MMC_XGMAC_TX_FPE_FRAG 0x208 #define MMC_XGMAC_TX_HOLD_REQ 0x20c +#define MMC_XGMAC_RX_FPE_INTR_MASK 0x224 #define MMC_XGMAC_RX_PKT_ASSEMBLY_ERR 0x228 #define MMC_XGMAC_RX_PKT_SMD_ERR 0x22c #define MMC_XGMAC_RX_PKT_ASSEMBLY_OK 0x230 @@ -352,6 +354,8 @@ static void dwxgmac_mmc_intr_all_mask(void __iomem *mmcaddr) { writel(0x0, mmcaddr + MMC_RX_INTR_MASK); writel(0x0, mmcaddr + MMC_TX_INTR_MASK); + writel(MMC_DEFAULT_MASK, mmcaddr + MMC_XGMAC_TX_FPE_INTR_MASK); + writel(MMC_DEFAULT_MASK, mmcaddr + MMC_XGMAC_RX_FPE_INTR_MASK); writel(MMC_DEFAULT_MASK, mmcaddr + MMC_XGMAC_RX_IPC_INTR_MASK); } |