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| author | Jisheng Zhang <jszhang@kernel.org> | 2021-12-26 15:49:10 +0800 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2022-04-11 13:52:35 +0100 |
| commit | 571dda6ca5136c1213bd36b9f298d4487e2b6622 (patch) | |
| tree | 4629b532331000e1a1f8ee8b6805e7a2029acbd9 /drivers/pci/controller/dwc | |
| parent | 88557685cd72cf0db686a4ebff3fad4365cb6071 (diff) | |
| download | linux-571dda6ca5136c1213bd36b9f298d4487e2b6622.tar.bz2 | |
PCI: tegra194: Remove unnecessary MSI enable reg save and restore
The integrated MSI Receiver enable register is always initialized in
dw_pcie_setup_rc() which is also called in resume code path, so we
don't need to save/restore the enable register during suspend/resume.
Link: https://lore.kernel.org/r/20211226074910.2722-1-jszhang@kernel.org
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Vidya Sagar <vidyas@nvidia.com>
Diffstat (limited to 'drivers/pci/controller/dwc')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-tegra194.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c index b1b5f836a806..cc2678490162 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -186,8 +186,6 @@ #define N_FTS_VAL 52 #define FTS_VAL 52 -#define PORT_LOGIC_MSI_CTRL_INT_0_EN 0x828 - #define GEN3_EQ_CONTROL_OFF 0x8a8 #define GEN3_EQ_CONTROL_OFF_PSET_REQ_VEC_SHIFT 8 #define GEN3_EQ_CONTROL_OFF_PSET_REQ_VEC_MASK GENMASK(23, 8) @@ -2189,9 +2187,6 @@ static int tegra194_pcie_suspend_noirq(struct device *dev) if (!pcie->link_state) return 0; - /* Save MSI interrupt vector */ - pcie->msi_ctrl_int = dw_pcie_readl_dbi(&pcie->pci, - PORT_LOGIC_MSI_CTRL_INT_0_EN); tegra_pcie_downstream_dev_to_D0(pcie); tegra194_pcie_pme_turnoff(pcie); tegra_pcie_unconfig_controller(pcie); @@ -2223,10 +2218,6 @@ static int tegra194_pcie_resume_noirq(struct device *dev) if (ret < 0) goto fail_host_init; - /* Restore MSI interrupt vector */ - dw_pcie_writel_dbi(&pcie->pci, PORT_LOGIC_MSI_CTRL_INT_0_EN, - pcie->msi_ctrl_int); - return 0; fail_host_init: |